Trojan.Win32.DLOADR.AUSUUF

March 11, 2020

PLATFORM:

Windows

OVERALL RISK RATING:

DAMAGE POTENTIAL:

DISTRIBUTION POTENTIAL:

REPORTED INFECTION:

Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes

OVERVIEW

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

TECHNICAL DETAILS

File Size:

3,062,784 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

11 Mar 2020

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Trojan adds the following processes:

%System Root%\Program Files\Mozilla Firefox\firefox.exe
"%System Root%\Program Files\Mozilla Firefox\updater.exe" %All Users Profile%\Mozilla\updates\308046B0AF4A39CB\updates\0 "%System Root%\Program Files\Mozilla Firefox" "%System Root%\Program Files\Mozilla Firefox\updated" 1264/replace "%System Root%\Program Files\Mozilla Firefox" "%System Root%\Program Files\Mozilla Firefox\firefox.exe"
%System Root%\Program Files\Mozilla Firefox\uninstall\helper.exe argv0ignored /PostUpdate
%Program Files%\Mozilla Maintenance Service\maintenanceservice_tmp.exe dummyparam.exe upgrade
"%System Root%\Program Files\Mozilla Firefox\firefox.exe"
"%System%\regsvr32.exe" /s "%System Root%\Program Files\Mozilla Firefox\AccessibleHandler.dll"
"%System%\regsvr32.exe" /s "%System Root%\Program Files\Mozilla Firefox\AccessibleMarshal.dll"

(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %All Users Profile% is the common user's profile folder, which is usually C:\Documents and Settings\All Users on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit). . %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

It creates the following folders:

%Application Data%\Mozilla\Firefox\Crash Reports
%System Root%\Users
%Application Data%\Mozilla
%Application Data%\Mozilla\Firefox\Pending Pings
%Program Files%\Mozilla Maintenance Service\logs
%System Root%\Program Files\Mozilla Firefox\tobedeleted
%Application Data%\Mozilla\Firefox
%User Profile%\AppData
%Application Data%\Mozilla\Firefox\Crash Reports\events

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name} on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Other System Modifications

This Trojan deletes the following files:

%System Root%\Program Files\Mozilla Firefox.bak\IA2Marshal.dll
%System Root%\Program Files\Mozilla Firefox.bak\defaults\pref\channel-prefs.js
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-libraryloader-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-handle-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-time-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\dependentlibs.list
%System Root%\Program Files\Mozilla Firefox.bak\omni.ja
%System Root%\Program Files\Mozilla Firefox.bak\uninstall\uninstall.log
%System Root%\Program Files\Mozilla Firefox.bak\browser\omni.ja
%System Root%\Program Files\Mozilla Firefox.bak\libGLESv2.dll
%System Root%\Program Files\Mozilla Firefox.bak\updated
%System Root%\Program Files\Mozilla Firefox.bak\gmp-clearkey\0.1\clearkey.dll.sig
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-processthreads-l1-1-1.dll
%System Root%\Program Files\Mozilla Firefox.bak\browser\features\screenshots@mozilla.org.xpi
%System Root%\Program Files\Mozilla Firefox.bak\mozavutil.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-conio-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\precomplete
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-locale-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-util-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-filesystem-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\uninstall\helper.exe
%System Root%\Program Files\Mozilla Firefox.bak\maintenanceservice.exe
%System Root%\Program Files\Mozilla Firefox.bak\fonts\TwemojiMozilla.ttf
%System Root%\Program Files\Mozilla Firefox.bak\nssdbm3.dll
%System Root%\Program Files\Mozilla Firefox.bak\AccessibleMarshal.dll
%System Root%\Program Files\Mozilla Firefox.bak\browser\features\formautofill@mozilla.org.xpi
%System Root%\Program Files\Mozilla Firefox.bak\nssckbi.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-string-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\browser\features\webcompat-reporter@mozilla.org.xpi
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-string-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\pingsender.exe
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-synch-l1-2-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-sysinfo-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-namedpipe-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-profile-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-synch-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\crashreporter.ini
%System Root%\Program Files\Mozilla Firefox.bak\vcruntime140.dll
%System Root%\Program Files\Mozilla Firefox\tobedeleted
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-heap-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\updater.ini
%System Root%\Program Files\Mozilla Firefox.bak\firefox.exe.sig
%System Root%\Program Files\Mozilla Firefox.bak\firefox.VisualElementsManifest.xml
%System Root%\Program Files\Mozilla Firefox.bak\libEGL.dll
%System Root%\Program Files\Mozilla Firefox.bak\lgpllibs.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-stdio-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-rtlsupport-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-memory-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\gmp-clearkey\0.1\clearkey.dll
%System Root%\Program Files\Mozilla Firefox.bak\update-settings.ini
%System Root%\Program Files\Mozilla Firefox.bak\plugin-hang-ui.exe
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-timezone-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\platform.ini
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-file-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\browser\VisualElements\VisualElements_70.png
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-errorhandling-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\xul.dll
%System Root%\Program Files\Mozilla Firefox.bak\install.log
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-processenvironment-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-localization-l1-2-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-interlocked-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-runtime-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\mozglue.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-debug-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\xul.dll.sig
%System Root%\Program Files\Mozilla Firefox.bak\plugin-container.exe
%System Root%\Program Files\Mozilla Firefox.bak\firefox.exe
%System Root%\Program Files\Mozilla Firefox.bak\freebl3.dll
%System Root%\Program Files\Mozilla Firefox.bak\nss3.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-utility-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-private-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-heap-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\d3dcompiler_47.dll
%System Root%\Program Files\Mozilla Firefox.bak\maintenanceservice_installer.exe
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-convert-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\msvcp140.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-console-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\updater.exe
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-process-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\uninstall\shortcuts_log.ini
%System Root%\Program Files\Mozilla Firefox.bak\chrome.manifest
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-file-l1-2-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\browser\crashreporter-override.ini
%System Root%\Program Files\Mozilla Firefox.bak\crashreporter.exe
%System Root%\Program Files\Mozilla Firefox.bak\browser\features\webcompat@mozilla.org.xpi
%System Root%\Program Files\Mozilla Firefox.bak\browser\chrome.manifest
%System Root%\Program Files\Mozilla Firefox.bak\removed-files
%System Root%\Program Files\Mozilla Firefox.bak\gmp-clearkey\0.1\manifest.json
%System Root%\Program Files\Mozilla Firefox.bak\mozavcodec.dll
%System Root%\Program Files\Mozilla Firefox.bak\browser\VisualElements\VisualElements_150.png
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-math-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\nssdbm3.chk
%System Root%\Program Files\Mozilla Firefox.bak\softokn3.chk
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-file-l2-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-environment-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\softokn3.dll
%System Root%\Program Files\Mozilla Firefox.bak\minidump-analyzer.exe
%System Root%\Program Files\Mozilla Firefox.bak\browser\blocklist.xml
%System Root%\Program Files\Mozilla Firefox.bak\ucrtbase.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-datetime-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\freebl3.chk
%System Root%\Program Files\Mozilla Firefox.bak\application.ini
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-processthreads-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\Accessible.tlb
%System Root%\Program Files\Mozilla Firefox.bak\AccessibleHandler.dll
%System Root%\Program Files\Mozilla Firefox.bak\plugin-container.exe.sig
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-multibyte-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\qipcap64.dll

(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)

It deletes the following folders:

%System Root%\Program Files\Mozilla Firefox.bak\browser\VisualElements
%System Root%\Program Files\Mozilla Firefox.bak\defaults
%System Root%\Program Files\Mozilla Firefox.bak\defaults\pref
%System Root%\Program Files\Mozilla Firefox.bak\browser\features
%System Root%\Program Files\Mozilla Firefox.bak\browser
%System Root%\Program Files\Mozilla Firefox.bak\gmp-clearkey
%System Root%\Program Files\Mozilla Firefox.bak\gmp-clearkey\0.1
%System Root%\Program Files\Mozilla Firefox.bak\fonts
%User Temp%\nse2867.tmp
%System Root%\Program Files\Mozilla Firefox.bak
%System Root%\Program Files\Mozilla Firefox.bak\uninstall

(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It adds the following registry entries:

HKEY_CURRENT_USER\Software\Classes\
Applications\updater.exe
IsHostApp = ""

HKEY_CURRENT_USER\Software\Classes\
Applications\updater.exe
NoOpenWith = ""

HKEY_CURRENT_USER\Software\Classes\
Applications\updater.exe
NoStartPage = ""

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Mozilla\Firefox\TaskBarIDs\
%System Root%\Program Files
Mozilla Firefox = "308046B0AF4A39CB"

HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\
Firefox\TaskBarIDs\%System Root%\
Program Files
Mozilla Firefox = "308046B0AF4A39CB"

HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla
FirefoxInstallerTest = "Write Test"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
FirefoxHTML-308046B0AF4A39CB
(Default) = "Firefox HTML Document"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
FirefoxHTML-308046B0AF4A39CB
FriendlyTypeName = "Firefox HTML Document"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
FirefoxHTML-308046B0AF4A39CB\DefaultIcon
(Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe,1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
FirefoxHTML-308046B0AF4A39CB\shell
(Default) = "open"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
FirefoxHTML-308046B0AF4A39CB\shell\open\
command
(Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe -osint -url %1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
FirefoxHTML-308046B0AF4A39CB\shell\open\
ddeexec
(Default) = ""

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
FirefoxURL-308046B0AF4A39CB
(Default) = "Firefox URL"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
FirefoxURL-308046B0AF4A39CB
FriendlyTypeName = "Firefox URL"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
FirefoxURL-308046B0AF4A39CB
URL Protocol = ""

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
FirefoxURL-308046B0AF4A39CB\DefaultIcon
(Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe,1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
FirefoxURL-308046B0AF4A39CB\shell
(Default) = "open"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
FirefoxURL-308046B0AF4A39CB\shell\open\
command
(Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe -osint -url %1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
FirefoxURL-308046B0AF4A39CB\shell\open\
ddeexec
(Default) = ""

HKEY_LOCAL_MACHINE\SOFTWARE\mozilla.org\
Mozilla
CurrentVersion = "66.0.5"

HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\
Mozilla Firefox\66.0.5 (x64 en-US)\Main
Install Directory = "%System Root%\Program Files\Mozilla Firefox"

HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\
Mozilla Firefox\66.0.5 (x64 en-US)\Main
PathToExe = "%System Root%\Program Files\Mozilla Firefox\firefox.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\
Mozilla Firefox\66.0.5 (x64 en-US)\Uninstall
Description = "Mozilla Firefox 66.0.5 (x64 en-US)"

HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\
Mozilla Firefox\66.0.5 (x64 en-US)
(Default) = "66.0.5 (x64 en-US)"

HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\
Mozilla Firefox 66.0.5\bin
PathToExe = "%System Root%\Program Files\Mozilla Firefox\firefox.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\
Mozilla Firefox 66.0.5\extensions
Components = "%System Root%\Program Files\Mozilla Firefox\components"

HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\
Mozilla Firefox 66.0.5\extensions
Plugins = "%System Root%\Program Files\Mozilla Firefox\plugins"

HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\
Mozilla Firefox 66.0.5
GeckoVer = "66.0.5"

HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\
Mozilla Firefox
(Default) = "66.0.5"

HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\
Mozilla Firefox
CurrentVersion = "66.0.5 (x64 en-US)"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Mozilla Firefox 66.0.5 (x64 en-US)
FirefoxInstallerTest = "Write Test"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Mozilla Firefox 66.0.5 (x64 en-US)
Comments = "Mozilla Firefox 66.0.5 (x64 en-US)"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Mozilla Firefox 66.0.5 (x64 en-US)
DisplayIcon = "%System Root%\Program Files\Mozilla Firefox\firefox.exe,0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Mozilla Firefox 66.0.5 (x64 en-US)
DisplayName = "Mozilla Firefox 66.0.5 (x64 en-US)"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Mozilla Firefox 66.0.5 (x64 en-US)
DisplayVersion = "66.0.5"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Mozilla Firefox 66.0.5 (x64 en-US)
HelpLink = "https://support.{BLOCKED}a.org"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Mozilla Firefox 66.0.5 (x64 en-US)
InstallLocation = "%System Root%\Program Files\Mozilla Firefox"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Mozilla Firefox 66.0.5 (x64 en-US)
Publisher = "Mozilla"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Mozilla Firefox 66.0.5 (x64 en-US)
UninstallString = "%System Root%\Program Files\Mozilla Firefox\uninstall\helper.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Mozilla Firefox 66.0.5 (x64 en-US)
URLUpdateInfo = "https://www.{BLOCKED}a.org/firefox/66.0.5/releasenotes"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Mozilla Firefox 66.0.5 (x64 en-US)
URLInfoAbout = "https://www.{BLOCKED}a.org"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Mozilla Firefox 66.0.5 (x64 en-US)
NoModify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Mozilla Firefox 66.0.5 (x64 en-US)
NoRepair = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Mozilla Firefox 66.0.5 (x64 en-US)
EstimatedSize = "179139"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB
(Default) = "Mozilla Firefox"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\DefaultIcon
(Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe,0"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\InstallInfo
HideIconsCommand = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\InstallInfo
ShowIconsCommand = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\InstallInfo
ReinstallCommand = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\InstallInfo
IconsVisible = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\shell\
open\command
(Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\shell\
properties
(Default) = "Firefox &Options"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\shell\
properties\command
(Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe -preferences"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\shell\
safemode
(Default) = "Firefox &Safe Mode"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\shell\
safemode\command
(Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe -safe-mode"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities
ApplicationDescription = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities
ApplicationIcon = "%System Root%\Program Files\Mozilla Firefox\firefox.exe,0"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities
ApplicationName = "Firefox"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities\
FileAssociations
.htm = "FirefoxHTML-308046B0AF4A39CB"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities\
FileAssociations
.html = "FirefoxHTML-308046B0AF4A39CB"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities\
FileAssociations
.shtml = "FirefoxHTML-308046B0AF4A39CB"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities\
FileAssociations
.xht = "FirefoxHTML-308046B0AF4A39CB"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities\
FileAssociations
.xhtml = "FirefoxHTML-308046B0AF4A39CB"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities\
StartMenu
StartMenuInternet = "Firefox-308046B0AF4A39CB"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities\
URLAssociations
ftp = "FirefoxURL-308046B0AF4A39CB"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities\
URLAssociations
http = "FirefoxURL-308046B0AF4A39CB"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities\
URLAssociations
https = "FirefoxURL-308046B0AF4A39CB"

HKEY_LOCAL_MACHINE\SOFTWARE\RegisteredApplications
Firefox-308046B0AF4A39CB = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\
MaintenanceService
Attempted = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\
MaintenanceService\f9b87e891978e3145f0f8f9953eadc00\0
name = "Mozilla Corporation"

HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\
MaintenanceService\f9b87e891978e3145f0f8f9953eadc00\0
issuer = "DigiCert SHA2 Assured ID Code Signing CA"

HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\
MaintenanceService\f9b87e891978e3145f0f8f9953eadc00\1
name = "Mozilla Corporation"

HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\
MaintenanceService\f9b87e891978e3145f0f8f9953eadc00\1
issuer = "DigiCert Assured ID Code Signing CA-1"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
explorer
GlobalAssocChangedCounter = "12"

It deletes the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\
FirefoxInstallerTest

HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\
Mozilla Firefox\66.0.5 (x64 en-US)\ESR

HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\
Mozilla Firefox 66.0.5\ESR

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Mozilla Firefox 66.0.5 (x64 en-US)\FirefoxInstallerTest

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Mozilla Firefox 66.0.5 (x64 en-US)\URLInfoAbout

HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\
MaintenanceService\f9b87e891978e3145f0f8f9953eadc00\prefetchProcessName

Dropping Routine

This Trojan drops the following files:

%Program Files%\Mozilla Maintenance Service\logs\log53ccb6a3-631e-4185-9812-c2bd0e22c2ac
%All Users Profile%\Mozilla\updates\308046B0AF4A39CB\updates\0\update.log
%All Users Profile%\Mozilla\updates\308046B0AF4A39CB\updates\0\sta082dbb6f-34c9-4ddf-9f69-f70a0ce3c751
%System Root%\Program Files\Mozilla Firefox\uninstall\uninstall.update
%Program Files%\Mozilla Maintenance Service\maintenanceservice_tmp.exe
%All Users Profile%\Mozilla\updates\308046B0AF4A39CB\updates\0\sta7143099c-3501-46a4-92b2-f27d7d0e83ad
%System Root%\Program Files\Mozilla Firefox.bak
%System Root%\Program Files\Mozilla Firefox
%All Users Profile%\Microsoft\Windows\Start Menu\Programs\$R5
%All Users Profile%\Microsoft\Windows\Start Menu\Programs\Firefox.lnk
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Windows Media Player.lnk
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\~irefox.tmp
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Firefox.lnk
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Windows Explorer.lnk
%System Root%\Program Files\Mozilla Firefox\uninstall\nsv3267.tmp
%Program Files%\Mozilla Maintenance Service\logs\maintenanceservice-install.log
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Acrobat Reader DC.lnk
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Google Chrome.lnk
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Firefox.lnk~RF1820115.TMP
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Internet Explorer.lnk
%All Users Profile%\Mozilla\updates\308046B0AF4A39CB\updates\0\log4e698206-8f66-4d80-b6e2-2650e03e8109
%Program Files%\Mozilla Maintenance Service\maintenanceservice.exe
%User Temp%\18D23AA7561FE5C1E4595011C9BCDCD71F1293F0.LOG
%All Users Profile%\Mozilla\updates\308046B0AF4A39CB\updates\0\update.status
%System Root%\Program Files\Mozilla Firefox\uninstall\uninstall.log
%System Root%\Program Files\Mozilla Firefox\uninstall\C\Program Files\Mozilla Firefox\uninstall\uninstall.update
%System Root%\Program Files\moz_update_in_progress.lock
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Firefox.lnk~RF1820173.TMP
%System Root%\Program Files\Mozilla Firefox\tobedeleted\repa21bf984-90b4-4f6e-a684-0e88d3128c2f
%System Root%\Program Files\Mozilla Firefox\uninstall\nsk33FD.tmp

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).. %All Users Profile% is the common user's profile folder, which is usually C:\Documents and Settings\All Users on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit). . %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

This report is generated via an automated analysis system.

SOLUTION

Minimum Scan Engine:

9.850

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.

Step 2

Identify and terminate files detected as Trojan.Win32.DLOADR.AUSUUF

[ Learn More ]

Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 3

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

In HKEY_CURRENT_USER\Software\Classes\Applications\updater.exe
- IsHostApp = ""

In HKEY_CURRENT_USER\Software\Classes\Applications\updater.exe
- NoOpenWith = ""

In HKEY_CURRENT_USER\Software\Classes\Applications\updater.exe
- NoStartPage = ""

In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Mozilla\Firefox\TaskBarIDs\%System Root%\Program Files
- Mozilla Firefox = "308046B0AF4A39CB"

In HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Firefox\TaskBarIDs\%System Root%\Program Files
- Mozilla Firefox = "308046B0AF4A39CB"

In HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla
- FirefoxInstallerTest = "Write Test"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\FirefoxHTML-308046B0AF4A39CB
- (Default) = "Firefox HTML Document"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\FirefoxHTML-308046B0AF4A39CB
- FriendlyTypeName = "Firefox HTML Document"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\FirefoxHTML-308046B0AF4A39CB\DefaultIcon
- (Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe,1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\FirefoxHTML-308046B0AF4A39CB\shell
- (Default) = "open"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\FirefoxHTML-308046B0AF4A39CB\shell\open\command
- (Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe -osint -url %1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\FirefoxHTML-308046B0AF4A39CB\shell\open\ddeexec
- (Default) = ""

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\FirefoxURL-308046B0AF4A39CB
- (Default) = "Firefox URL"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\FirefoxURL-308046B0AF4A39CB
- FriendlyTypeName = "Firefox URL"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\FirefoxURL-308046B0AF4A39CB
- URL Protocol = ""

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\FirefoxURL-308046B0AF4A39CB\DefaultIcon
- (Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe,1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\FirefoxURL-308046B0AF4A39CB\shell
- (Default) = "open"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\FirefoxURL-308046B0AF4A39CB\shell\open\command
- (Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe -osint -url %1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\FirefoxURL-308046B0AF4A39CB\shell\open\ddeexec
- (Default) = ""

In HKEY_LOCAL_MACHINE\SOFTWARE\mozilla.org\Mozilla
- CurrentVersion = "66.0.5"

In HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Mozilla Firefox\66.0.5 (x64 en-US)\Main
- Install Directory = "%System Root%\Program Files\Mozilla Firefox"

In HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Mozilla Firefox\66.0.5 (x64 en-US)\Main
- PathToExe = "%System Root%\Program Files\Mozilla Firefox\firefox.exe"

In HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Mozilla Firefox\66.0.5 (x64 en-US)\Uninstall
- Description = "Mozilla Firefox 66.0.5 (x64 en-US)"

In HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Mozilla Firefox\66.0.5 (x64 en-US)
- (Default) = "66.0.5 (x64 en-US)"

In HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Mozilla Firefox 66.0.5\bin
- PathToExe = "%System Root%\Program Files\Mozilla Firefox\firefox.exe"

In HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Mozilla Firefox 66.0.5\extensions
- Components = "%System Root%\Program Files\Mozilla Firefox\components"

In HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Mozilla Firefox 66.0.5\extensions
- Plugins = "%System Root%\Program Files\Mozilla Firefox\plugins"

In HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Mozilla Firefox 66.0.5
- GeckoVer = "66.0.5"

In HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Mozilla Firefox
- (Default) = "66.0.5"

In HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Mozilla Firefox
- CurrentVersion = "66.0.5 (x64 en-US)"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 66.0.5 (x64 en-US)
- FirefoxInstallerTest = "Write Test"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 66.0.5 (x64 en-US)
- Comments = "Mozilla Firefox 66.0.5 (x64 en-US)"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 66.0.5 (x64 en-US)
- DisplayIcon = "%System Root%\Program Files\Mozilla Firefox\firefox.exe,0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 66.0.5 (x64 en-US)
- DisplayName = "Mozilla Firefox 66.0.5 (x64 en-US)"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 66.0.5 (x64 en-US)
- DisplayVersion = "66.0.5"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 66.0.5 (x64 en-US)
- HelpLink = "https://support.{BLOCKED}a.org"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 66.0.5 (x64 en-US)
- InstallLocation = "%System Root%\Program Files\Mozilla Firefox"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 66.0.5 (x64 en-US)
- Publisher = "Mozilla"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 66.0.5 (x64 en-US)
- UninstallString = "%System Root%\Program Files\Mozilla Firefox\uninstall\helper.exe"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 66.0.5 (x64 en-US)
- URLUpdateInfo = "https://www.{BLOCKED}a.org/firefox/66.0.5/releasenotes"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 66.0.5 (x64 en-US)
- URLInfoAbout = "https://www.{BLOCKED}a.org"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 66.0.5 (x64 en-US)
- NoModify = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 66.0.5 (x64 en-US)
- NoRepair = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 66.0.5 (x64 en-US)
- EstimatedSize = "179139"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB
- (Default) = "Mozilla Firefox"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\DefaultIcon
- (Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe,0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\InstallInfo
- HideIconsCommand = "{random characters}"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\InstallInfo
- ShowIconsCommand = "{random characters}"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\InstallInfo
- ReinstallCommand = "{random characters}"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\InstallInfo
- IconsVisible = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\shell\open\command
- (Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\shell\properties
- (Default) = "Firefox &Options"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\shell\properties\command
- (Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe -preferences"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\shell\safemode
- (Default) = "Firefox &Safe Mode"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\shell\safemode\command
- (Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe -safe-mode"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities
- ApplicationDescription = "{random characters}"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities
- ApplicationIcon = "%System Root%\Program Files\Mozilla Firefox\firefox.exe,0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities
- ApplicationName = "Firefox"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities\FileAssociations
- .htm = "FirefoxHTML-308046B0AF4A39CB"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities\FileAssociations
- .html = "FirefoxHTML-308046B0AF4A39CB"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities\FileAssociations
- .shtml = "FirefoxHTML-308046B0AF4A39CB"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities\FileAssociations
- .xht = "FirefoxHTML-308046B0AF4A39CB"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities\FileAssociations
- .xhtml = "FirefoxHTML-308046B0AF4A39CB"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities\StartMenu
- StartMenuInternet = "Firefox-308046B0AF4A39CB"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities\URLAssociations
- ftp = "FirefoxURL-308046B0AF4A39CB"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities\URLAssociations
- http = "FirefoxURL-308046B0AF4A39CB"

In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Firefox-308046B0AF4A39CB\Capabilities\URLAssociations
- https = "FirefoxURL-308046B0AF4A39CB"

In HKEY_LOCAL_MACHINE\SOFTWARE\RegisteredApplications
- Firefox-308046B0AF4A39CB = "{random characters}"

In HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\MaintenanceService
- Attempted = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\MaintenanceService\f9b87e891978e3145f0f8f9953eadc00\0
- name = "Mozilla Corporation"

In HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\MaintenanceService\f9b87e891978e3145f0f8f9953eadc00\0
- issuer = "DigiCert SHA2 Assured ID Code Signing CA"

In HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\MaintenanceService\f9b87e891978e3145f0f8f9953eadc00\1
- name = "Mozilla Corporation"

In HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\MaintenanceService\f9b87e891978e3145f0f8f9953eadc00\1
- issuer = "DigiCert Assured ID Code Signing CA-1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer
- GlobalAssocChangedCounter = "12"

To delete the registry value this malware/grayware created:

Open Registry Editor.
» For Windows 7 and Windows Server 2008 (R2) users, click the Start button, type regedit in the Search input field then press Enter.
» For Windows 8, Windows 8.1, Windows 10, and Windows Server 2012 (R2) users, right-click on the lower-left corner of the screen, click Run, type regedit in the text box provided, and then press Enter.
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Classes>Applications>updater.exe
In the right panel, locate and delete the entry:
IsHostApp = ""
Again In the right panel, locate and delete the entry:
NoOpenWith = ""
Again In the right panel, locate and delete the entry:
NoStartPage = ""
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Wow6432Node>Mozilla>Firefox>TaskBarIDs>%System Root%>Program Files
In the right panel, locate and delete the entry:
Mozilla Firefox = "308046B0AF4A39CB"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Mozilla>Firefox>TaskBarIDs>%System Root%>Program Files
In the right panel, locate and delete the entry:
Mozilla Firefox = "308046B0AF4A39CB"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Mozilla
In the right panel, locate and delete the entry:
FirefoxInstallerTest = "Write Test"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>FirefoxHTML-308046B0AF4A39CB
In the right panel, locate and delete the entry:
(Default) = "Firefox HTML Document"
Again In the right panel, locate and delete the entry:
FriendlyTypeName = "Firefox HTML Document"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>FirefoxHTML-308046B0AF4A39CB>DefaultIcon
In the right panel, locate and delete the entry:
(Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe,1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>FirefoxHTML-308046B0AF4A39CB>shell
In the right panel, locate and delete the entry:
(Default) = "open"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>FirefoxHTML-308046B0AF4A39CB>shell>open>command
In the right panel, locate and delete the entry:
(Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe -osint -url %1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>FirefoxHTML-308046B0AF4A39CB>shell>open>ddeexec
In the right panel, locate and delete the entry:
(Default) = ""
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>FirefoxURL-308046B0AF4A39CB
In the right panel, locate and delete the entry:
(Default) = "Firefox URL"
Again In the right panel, locate and delete the entry:
FriendlyTypeName = "Firefox URL"
Again In the right panel, locate and delete the entry:
URL Protocol = ""
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>FirefoxURL-308046B0AF4A39CB>DefaultIcon
In the right panel, locate and delete the entry:
(Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe,1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>FirefoxURL-308046B0AF4A39CB>shell
In the right panel, locate and delete the entry:
(Default) = "open"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>FirefoxURL-308046B0AF4A39CB>shell>open>command
In the right panel, locate and delete the entry:
(Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe -osint -url %1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>FirefoxURL-308046B0AF4A39CB>shell>open>ddeexec
In the right panel, locate and delete the entry:
(Default) = ""
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>mozilla.org>Mozilla
In the right panel, locate and delete the entry:
CurrentVersion = "66.0.5"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Mozilla>Mozilla Firefox>66.0.5 (x64 en-US)>Main
In the right panel, locate and delete the entry:
Install Directory = "%System Root%\Program Files\Mozilla Firefox"
Again In the right panel, locate and delete the entry:
PathToExe = "%System Root%\Program Files\Mozilla Firefox\firefox.exe"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Mozilla>Mozilla Firefox>66.0.5 (x64 en-US)>Uninstall
In the right panel, locate and delete the entry:
Description = "Mozilla Firefox 66.0.5 (x64 en-US)"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Mozilla>Mozilla Firefox>66.0.5 (x64 en-US)
In the right panel, locate and delete the entry:
(Default) = "66.0.5 (x64 en-US)"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Mozilla>Mozilla Firefox 66.0.5>bin
In the right panel, locate and delete the entry:
PathToExe = "%System Root%\Program Files\Mozilla Firefox\firefox.exe"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Mozilla>Mozilla Firefox 66.0.5>extensions
In the right panel, locate and delete the entry:
Components = "%System Root%\Program Files\Mozilla Firefox\components"
Again In the right panel, locate and delete the entry:
Plugins = "%System Root%\Program Files\Mozilla Firefox\plugins"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Mozilla>Mozilla Firefox 66.0.5
In the right panel, locate and delete the entry:
GeckoVer = "66.0.5"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Mozilla>Mozilla Firefox
In the right panel, locate and delete the entry:
(Default) = "66.0.5"
Again In the right panel, locate and delete the entry:
CurrentVersion = "66.0.5 (x64 en-US)"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Uninstall>Mozilla Firefox 66.0.5 (x64 en-US)
In the right panel, locate and delete the entry:
FirefoxInstallerTest = "Write Test"
Again In the right panel, locate and delete the entry:
Comments = "Mozilla Firefox 66.0.5 (x64 en-US)"
Again In the right panel, locate and delete the entry:
DisplayIcon = "%System Root%\Program Files\Mozilla Firefox\firefox.exe,0"
Again In the right panel, locate and delete the entry:
DisplayName = "Mozilla Firefox 66.0.5 (x64 en-US)"
Again In the right panel, locate and delete the entry:
DisplayVersion = "66.0.5"
Again In the right panel, locate and delete the entry:
HelpLink = "https://support.{BLOCKED}a.org"
Again In the right panel, locate and delete the entry:
InstallLocation = "%System Root%\Program Files\Mozilla Firefox"
Again In the right panel, locate and delete the entry:
Publisher = "Mozilla"
Again In the right panel, locate and delete the entry:
UninstallString = "%System Root%\Program Files\Mozilla Firefox\uninstall\helper.exe"
Again In the right panel, locate and delete the entry:
URLUpdateInfo = "https://www.{BLOCKED}a.org/firefox/66.0.5/releasenotes"
Again In the right panel, locate and delete the entry:
URLInfoAbout = "https://www.{BLOCKED}a.org"
Again In the right panel, locate and delete the entry:
NoModify = "1"
Again In the right panel, locate and delete the entry:
NoRepair = "1"
Again In the right panel, locate and delete the entry:
EstimatedSize = "179139"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Clients>StartMenuInternet>Firefox-308046B0AF4A39CB
In the right panel, locate and delete the entry:
(Default) = "Mozilla Firefox"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Clients>StartMenuInternet>Firefox-308046B0AF4A39CB>DefaultIcon
In the right panel, locate and delete the entry:
(Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe,0"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Clients>StartMenuInternet>Firefox-308046B0AF4A39CB>InstallInfo
In the right panel, locate and delete the entry:
HideIconsCommand = "{random characters}"
Again In the right panel, locate and delete the entry:
ShowIconsCommand = "{random characters}"
Again In the right panel, locate and delete the entry:
ReinstallCommand = "{random characters}"
Again In the right panel, locate and delete the entry:
IconsVisible = "1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Clients>StartMenuInternet>Firefox-308046B0AF4A39CB>shell>open>command
In the right panel, locate and delete the entry:
(Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Clients>StartMenuInternet>Firefox-308046B0AF4A39CB>shell>properties
In the right panel, locate and delete the entry:
(Default) = "Firefox &Options"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Clients>StartMenuInternet>Firefox-308046B0AF4A39CB>shell>properties>command
In the right panel, locate and delete the entry:
(Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe -preferences"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Clients>StartMenuInternet>Firefox-308046B0AF4A39CB>shell>safemode
In the right panel, locate and delete the entry:
(Default) = "Firefox &Safe Mode"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Clients>StartMenuInternet>Firefox-308046B0AF4A39CB>shell>safemode>command
In the right panel, locate and delete the entry:
(Default) = "%System Root%\Program Files\Mozilla Firefox\firefox.exe -safe-mode"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Clients>StartMenuInternet>Firefox-308046B0AF4A39CB>Capabilities
In the right panel, locate and delete the entry:
ApplicationDescription = "{random characters}"
Again In the right panel, locate and delete the entry:
ApplicationIcon = "%System Root%\Program Files\Mozilla Firefox\firefox.exe,0"
Again In the right panel, locate and delete the entry:
ApplicationName = "Firefox"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Clients>StartMenuInternet>Firefox-308046B0AF4A39CB>Capabilities>FileAssociations
In the right panel, locate and delete the entry:
.htm = "FirefoxHTML-308046B0AF4A39CB"
Again In the right panel, locate and delete the entry:
.html = "FirefoxHTML-308046B0AF4A39CB"
Again In the right panel, locate and delete the entry:
.shtml = "FirefoxHTML-308046B0AF4A39CB"
Again In the right panel, locate and delete the entry:
.xht = "FirefoxHTML-308046B0AF4A39CB"
Again In the right panel, locate and delete the entry:
.xhtml = "FirefoxHTML-308046B0AF4A39CB"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Clients>StartMenuInternet>Firefox-308046B0AF4A39CB>Capabilities>StartMenu
In the right panel, locate and delete the entry:
StartMenuInternet = "Firefox-308046B0AF4A39CB"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Clients>StartMenuInternet>Firefox-308046B0AF4A39CB>Capabilities>URLAssociations
In the right panel, locate and delete the entry:
ftp = "FirefoxURL-308046B0AF4A39CB"
Again In the right panel, locate and delete the entry:
http = "FirefoxURL-308046B0AF4A39CB"
Again In the right panel, locate and delete the entry:
https = "FirefoxURL-308046B0AF4A39CB"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>RegisteredApplications
In the right panel, locate and delete the entry:
Firefox-308046B0AF4A39CB = "{random characters}"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Mozilla>MaintenanceService
In the right panel, locate and delete the entry:
Attempted = "1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Mozilla>MaintenanceService>f9b87e891978e3145f0f8f9953eadc00>0
In the right panel, locate and delete the entry:
name = "Mozilla Corporation"
Again In the right panel, locate and delete the entry:
issuer = "DigiCert SHA2 Assured ID Code Signing CA"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Mozilla>MaintenanceService>f9b87e891978e3145f0f8f9953eadc00>1
In the right panel, locate and delete the entry:
name = "Mozilla Corporation"
Again In the right panel, locate and delete the entry:
issuer = "DigiCert Assured ID Code Signing CA-1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Wow6432Node>Microsoft>Windows>CurrentVersion>explorer
In the right panel, locate and delete the entry:
GlobalAssocChangedCounter = "12"
Close Registry Editor.

Step 4

Search and delete these components

[ Learn More ]

There may be some components that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.

%Program Files%\Mozilla Maintenance Service\logs\log53ccb6a3-631e-4185-9812-c2bd0e22c2ac
%All Users Profile%\Mozilla\updates\308046B0AF4A39CB\updates\0\update.log
%All Users Profile%\Mozilla\updates\308046B0AF4A39CB\updates\0\sta082dbb6f-34c9-4ddf-9f69-f70a0ce3c751
%System Root%\Program Files\Mozilla Firefox\uninstall\uninstall.update
%Program Files%\Mozilla Maintenance Service\maintenanceservice_tmp.exe
%All Users Profile%\Mozilla\updates\308046B0AF4A39CB\updates\0\sta7143099c-3501-46a4-92b2-f27d7d0e83ad
%System Root%\Program Files\Mozilla Firefox.bak
%System Root%\Program Files\Mozilla Firefox
%All Users Profile%\Microsoft\Windows\Start Menu\Programs\$R5
%All Users Profile%\Microsoft\Windows\Start Menu\Programs\Firefox.lnk
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Windows Media Player.lnk
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\~irefox.tmp
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Firefox.lnk
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Windows Explorer.lnk
%System Root%\Program Files\Mozilla Firefox\uninstall\nsv3267.tmp
%Program Files%\Mozilla Maintenance Service\logs\maintenanceservice-install.log
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Acrobat Reader DC.lnk
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Google Chrome.lnk
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Firefox.lnk~RF1820115.TMP
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Internet Explorer.lnk
%All Users Profile%\Mozilla\updates\308046B0AF4A39CB\updates\0\log4e698206-8f66-4d80-b6e2-2650e03e8109
%Program Files%\Mozilla Maintenance Service\maintenanceservice.exe
%User Temp%\18D23AA7561FE5C1E4595011C9BCDCD71F1293F0.LOG
%All Users Profile%\Mozilla\updates\308046B0AF4A39CB\updates\0\update.status
%System Root%\Program Files\Mozilla Firefox\uninstall\uninstall.log
%System Root%\Program Files\Mozilla Firefox\uninstall\C\Program Files\Mozilla Firefox\uninstall\uninstall.update
%System Root%\Program Files\moz_update_in_progress.lock
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Firefox.lnk~RF1820173.TMP
%System Root%\Program Files\Mozilla Firefox\tobedeleted\repa21bf984-90b4-4f6e-a684-0e88d3128c2f
%System Root%\Program Files\Mozilla Firefox\uninstall\nsk33FD.tmp

To manually delete a malware/grayware file from an affected system:

•For Windows 7, Windows Server 2008 (R2), Windows 8, Windows 8.1, Windows 10, and Windows Server 2012 (R2):

Open a Windows Explorer window.
- For Windows 7 and Server 2008 (R2) users, click Start>Computer.
- For Windows 8, 8.1, 10, and Server 2012 (R2) users, right-click on the lower-left corner of the screen,then click File Explorer.
In the Search Computer/This PC input box, type:
%Program Files%\Mozilla Maintenance Service\logs\log53ccb6a3-631e-4185-9812-c2bd0e22c2ac
%All Users Profile%\Mozilla\updates\308046B0AF4A39CB\updates\0\update.log
%All Users Profile%\Mozilla\updates\308046B0AF4A39CB\updates\0\sta082dbb6f-34c9-4ddf-9f69-f70a0ce3c751
%System Root%\Program Files\Mozilla Firefox\uninstall\uninstall.update
%Program Files%\Mozilla Maintenance Service\maintenanceservice_tmp.exe
%All Users Profile%\Mozilla\updates\308046B0AF4A39CB\updates\0\sta7143099c-3501-46a4-92b2-f27d7d0e83ad
%System Root%\Program Files\Mozilla Firefox.bak
%System Root%\Program Files\Mozilla Firefox
%All Users Profile%\Microsoft\Windows\Start Menu\Programs\$R5
%All Users Profile%\Microsoft\Windows\Start Menu\Programs\Firefox.lnk
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Windows Media Player.lnk
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\~irefox.tmp
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Firefox.lnk
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Windows Explorer.lnk
%System Root%\Program Files\Mozilla Firefox\uninstall\nsv3267.tmp
%Program Files%\Mozilla Maintenance Service\logs\maintenanceservice-install.log
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Acrobat Reader DC.lnk
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Google Chrome.lnk
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Firefox.lnk~RF1820115.TMP
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Internet Explorer.lnk
%All Users Profile%\Mozilla\updates\308046B0AF4A39CB\updates\0\log4e698206-8f66-4d80-b6e2-2650e03e8109
%Program Files%\Mozilla Maintenance Service\maintenanceservice.exe
%User Temp%\18D23AA7561FE5C1E4595011C9BCDCD71F1293F0.LOG
%All Users Profile%\Mozilla\updates\308046B0AF4A39CB\updates\0\update.status
%System Root%\Program Files\Mozilla Firefox\uninstall\uninstall.log
%System Root%\Program Files\Mozilla Firefox\uninstall\C\Program Files\Mozilla Firefox\uninstall\uninstall.update
%System Root%\Program Files\moz_update_in_progress.lock
%Application Data%\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Firefox.lnk~RF1820173.TMP
%System Root%\Program Files\Mozilla Firefox\tobedeleted\repa21bf984-90b4-4f6e-a684-0e88d3128c2f
%System Root%\Program Files\Mozilla Firefox\uninstall\nsk33FD.tmp
Once located, select the file then press SHIFT+DELETE to delete it.
*Note: Read the following Microsoft page if these steps do not work on Windows 7 and Windows Server 2008 (R2).

Step 5

Search and delete these folders

[ Learn More ]

Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.

%Application Data%\Mozilla\Firefox\Crash Reports
%System Root%\Users
%Application Data%\Mozilla
%Application Data%\Mozilla\Firefox\Pending Pings
%Program Files%\Mozilla Maintenance Service\logs
%System Root%\Program Files\Mozilla Firefox\tobedeleted
%Application Data%\Mozilla\Firefox
%User Profile%\AppData
%Application Data%\Mozilla\Firefox\Crash Reports\events

Step 6

Scan your computer with your Trend Micro product to delete files detected as Trojan.Win32.DLOADR.AUSUUF. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check the following Trend Micro Support pages for more information:

Step 7

Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.

%System Root%\Program Files\Mozilla Firefox.bak\IA2Marshal.dll
%System Root%\Program Files\Mozilla Firefox.bak\defaults\pref\channel-prefs.js
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-libraryloader-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-handle-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-time-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\dependentlibs.list
%System Root%\Program Files\Mozilla Firefox.bak\omni.ja
%System Root%\Program Files\Mozilla Firefox.bak\uninstall\uninstall.log
%System Root%\Program Files\Mozilla Firefox.bak\browser\omni.ja
%System Root%\Program Files\Mozilla Firefox.bak\libGLESv2.dll
%System Root%\Program Files\Mozilla Firefox.bak\updated
%System Root%\Program Files\Mozilla Firefox.bak\gmp-clearkey\0.1\clearkey.dll.sig
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-processthreads-l1-1-1.dll
%System Root%\Program Files\Mozilla Firefox.bak\browser\features\screenshots@mozilla.org.xpi
%System Root%\Program Files\Mozilla Firefox.bak\mozavutil.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-conio-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\precomplete
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-locale-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-util-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-filesystem-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\uninstall\helper.exe
%System Root%\Program Files\Mozilla Firefox.bak\maintenanceservice.exe
%System Root%\Program Files\Mozilla Firefox.bak\fonts\TwemojiMozilla.ttf
%System Root%\Program Files\Mozilla Firefox.bak\nssdbm3.dll
%System Root%\Program Files\Mozilla Firefox.bak\AccessibleMarshal.dll
%System Root%\Program Files\Mozilla Firefox.bak\browser\features\formautofill@mozilla.org.xpi
%System Root%\Program Files\Mozilla Firefox.bak\nssckbi.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-string-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\browser\features\webcompat-reporter@mozilla.org.xpi
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-string-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\pingsender.exe
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-synch-l1-2-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-sysinfo-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-namedpipe-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-profile-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-synch-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\crashreporter.ini
%System Root%\Program Files\Mozilla Firefox.bak\vcruntime140.dll
%System Root%\Program Files\Mozilla Firefox\tobedeleted
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-heap-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\updater.ini
%System Root%\Program Files\Mozilla Firefox.bak\firefox.exe.sig
%System Root%\Program Files\Mozilla Firefox.bak\firefox.VisualElementsManifest.xml
%System Root%\Program Files\Mozilla Firefox.bak\libEGL.dll
%System Root%\Program Files\Mozilla Firefox.bak\lgpllibs.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-stdio-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-rtlsupport-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-memory-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\gmp-clearkey\0.1\clearkey.dll
%System Root%\Program Files\Mozilla Firefox.bak\update-settings.ini
%System Root%\Program Files\Mozilla Firefox.bak\plugin-hang-ui.exe
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-timezone-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\platform.ini
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-file-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\browser\VisualElements\VisualElements_70.png
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-errorhandling-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\xul.dll
%System Root%\Program Files\Mozilla Firefox.bak\install.log
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-processenvironment-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-localization-l1-2-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-interlocked-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-runtime-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\mozglue.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-debug-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\xul.dll.sig
%System Root%\Program Files\Mozilla Firefox.bak\plugin-container.exe
%System Root%\Program Files\Mozilla Firefox.bak\firefox.exe
%System Root%\Program Files\Mozilla Firefox.bak\freebl3.dll
%System Root%\Program Files\Mozilla Firefox.bak\nss3.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-utility-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-private-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-heap-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\d3dcompiler_47.dll
%System Root%\Program Files\Mozilla Firefox.bak\maintenanceservice_installer.exe
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-convert-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\msvcp140.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-console-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\updater.exe
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-process-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\uninstall\shortcuts_log.ini
%System Root%\Program Files\Mozilla Firefox.bak\chrome.manifest
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-file-l1-2-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\browser\crashreporter-override.ini
%System Root%\Program Files\Mozilla Firefox.bak\crashreporter.exe
%System Root%\Program Files\Mozilla Firefox.bak\browser\features\webcompat@mozilla.org.xpi
%System Root%\Program Files\Mozilla Firefox.bak\browser\chrome.manifest
%System Root%\Program Files\Mozilla Firefox.bak\removed-files
%System Root%\Program Files\Mozilla Firefox.bak\gmp-clearkey\0.1\manifest.json
%System Root%\Program Files\Mozilla Firefox.bak\mozavcodec.dll
%System Root%\Program Files\Mozilla Firefox.bak\browser\VisualElements\VisualElements_150.png
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-math-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\nssdbm3.chk
%System Root%\Program Files\Mozilla Firefox.bak\softokn3.chk
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-file-l2-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-environment-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\softokn3.dll
%System Root%\Program Files\Mozilla Firefox.bak\minidump-analyzer.exe
%System Root%\Program Files\Mozilla Firefox.bak\browser\blocklist.xml
%System Root%\Program Files\Mozilla Firefox.bak\ucrtbase.dll
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-datetime-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\freebl3.chk
%System Root%\Program Files\Mozilla Firefox.bak\application.ini
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-core-processthreads-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\Accessible.tlb
%System Root%\Program Files\Mozilla Firefox.bak\AccessibleHandler.dll
%System Root%\Program Files\Mozilla Firefox.bak\plugin-container.exe.sig
%System Root%\Program Files\Mozilla Firefox.bak\api-ms-win-crt-multibyte-l1-1-0.dll
%System Root%\Program Files\Mozilla Firefox.bak\qipcap64.dll

Step 8

Restore these deleted registry keys/values from backup

*Note: Only Microsoft-related keys/values will be restored. If the malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.

In HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla
- FirefoxInstallerTest

In HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Mozilla Firefox\66.0.5 (x64 en-US)
- ESR

In HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Mozilla Firefox 66.0.5
- ESR

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 66.0.5 (x64 en-US)
- FirefoxInstallerTest

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 66.0.5 (x64 en-US)
- URLInfoAbout

In HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\MaintenanceService\f9b87e891978e3145f0f8f9953eadc00
- prefetchProcessName

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Trojan.Win32.DLOADR.AUSUUF

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Trojan.Win32.DLOADR.AUSUUF

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