Trojan.Win32.SKEEYAH.USASHAG20

January 20, 2020
 ALIASES:

Backdoor.MSIL.Bladabindi.bdth (Kaspersky); Win32.Malware!Drop (Sunbelt)

 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:

1,783,394 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

20 Jan 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:

  • %User Temp%\mqsvw.exe
  • %User Temp%\test.exe

(Note: %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 creates the following folders:

  • %User Profile%\AppData
  • %System Root%\Program Files\7-Zip\Lang
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\7-Zip
  • %System Root%\Users
  • %System Root%\Program Files\7-Zip

(Note: %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).. %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). )

Other System Modifications

This Trojan deletes the following files:

  • %Start Menu%\Programs\7-Zip\7-Zip Help.lnk
  • %Start Menu%\Programs\7-Zip\7-Zip File Manager.lnk

(Note: %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu 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\7-Zip
Path64 = "%System Root%\Program Files\7-Zip"

HKEY_CURRENT_USER\Software\7-Zip
Path = "%System Root%\Program Files\7-Zip"

HKEY_LOCAL_MACHINE\SOFTWARE\7-Zip
Path64 = "%System Root%\Program Files\7-Zip"

HKEY_LOCAL_MACHINE\SOFTWARE\7-Zip
Path = "%System Root%\Program Files\7-Zip"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}
(Default) = "7-Zip Shell Extension"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\
InprocServer32
(Default) = "%System Root%\Program Files\7-Zip\7-zip32.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\
InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{23170F69-40C1-278A-1000-000100020000}
(Default) = "7-Zip Shell Extension"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32
(Default) = "%System Root%\Program Files\7-Zip\7-zip.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
*\shellex\ContextMenuHandlers\
7-Zip
(Default) = "{23170F69-40C1-278A-1000-000100020000}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Directory\shellex\ContextMenuHandlers\
7-Zip
(Default) = "{23170F69-40C1-278A-1000-000100020000}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Folder\ShellEx\ContextMenuHandlers\
7-Zip
(Default) = "{23170F69-40C1-278A-1000-000100020000}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Directory\shellex\DragDropHandlers\
7-Zip
(Default) = "{23170F69-40C1-278A-1000-000100020000}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Drive\shellex\DragDropHandlers\
7-Zip
(Default) = "{23170F69-40C1-278A-1000-000100020000}"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Shell Extensions\Approved
{23170F69-40C1-278A-1000-000100020000} = "7-Zip Shell Extension"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Shell Extensions\
Approved
{23170F69-40C1-278A-1000-000100020000} = "7-Zip Shell Extension"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\App Paths\
7zFM.exe
(Default) = "%System Root%\Program Files\7-Zip\7zFM.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\App Paths\
7zFM.exe
Path = "%System Root%\Program Files\7-Zip"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
7-Zip
DisplayName = "7-Zip 19.00 (x64)"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
7-Zip
DisplayVersion = "19.00"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
7-Zip
DisplayIcon = "%System Root%\Program Files\7-Zip\7zFM.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
7-Zip
InstallLocation = "%System Root%\Program Files\7-Zip"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
7-Zip
UninstallString = "%System Root%\Program Files\7-Zip\Uninstall.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
7-Zip
NoModify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
7-Zip
NoRepair = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
7-Zip
EstimatedSize = "5082"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
7-Zip
VersionMajor = "19"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
7-Zip
VersionMinor = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
7-Zip
Publisher = "Igor Pavlov"

HKEY_CURRENT_USER
di = "!"

Dropping Routine

This Trojan drops the following files:

  • %System Root%\Program Files\7-Zip\Lang\br.txt
  • %System Root%\Program Files\7-Zip\Lang\sl.txt
  • %System Root%\Program Files\7-Zip\Lang\cs.txt
  • %System Root%\Program Files\7-Zip\Lang\ro.txt
  • %System Root%\Program Files\7-Zip\Lang\yo.txt
  • %System Root%\Program Files\7-Zip\Lang\va.txt
  • %System Root%\Program Files\7-Zip\Lang\nb.txt
  • %System Root%\Program Files\7-Zip\Lang\en.ttt
  • %System Root%\Program Files\7-Zip\Lang\ug.txt
  • %System Root%\Program Files\7-Zip\Lang\sr-spc.txt
  • %System Root%\Program Files\7-Zip\7zFM.exe
  • %System Root%\Program Files\7-Zip\7zG.exe
  • %System Root%\Program Files\7-Zip\Lang\tr.txt
  • %System Root%\Program Files\7-Zip\Lang\ky.txt
  • %System Root%\Program Files\7-Zip\Lang\uk.txt
  • %System Root%\Program Files\7-Zip\Lang\lt.txt
  • %System Root%\Program Files\7-Zip\Lang\zh-cn.txt
  • %System Root%\Program Files\7-Zip\Lang\ba.txt
  • %System Root%\Program Files\7-Zip\Lang\id.txt
  • %System Root%\Program Files\7-Zip\7zCon.sfx
  • %System Root%\Program Files\7-Zip\Lang\kaa.txt
  • %System Root%\Program Files\7-Zip\Lang\uz.txt
  • %System Root%\Program Files\7-Zip\Lang\sk.txt
  • %System Root%\Program Files\7-Zip\Lang\pa-in.txt
  • %System Root%\Program Files\7-Zip\7-zip32.dll
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\7-Zip\7-Zip Help.lnk
  • %System Root%\Program Files\7-Zip\Lang\nl.txt
  • %System Root%\Program Files\7-Zip\Lang\kk.txt
  • %System Root%\Program Files\7-Zip\Lang\fa.txt
  • %System Root%\Program Files\7-Zip\Lang\bg.txt
  • %System Root%\Program Files\7-Zip\Lang\ta.txt
  • %System Root%\Program Files\7-Zip\readme.txt
  • %System Root%\Program Files\7-Zip\7-zip.dll
  • %System Root%\Program Files\7-Zip\Lang\hr.txt
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\7-Zip\7-Zip File Manager.lnk
  • %System Root%\Program Files\7-Zip\Lang\pt.txt
  • %System Root%\Program Files\7-Zip\Lang\ca.txt
  • %System Root%\Program Files\7-Zip\Lang\he.txt
  • %System Root%\Program Files\7-Zip\Lang\ne.txt
  • %System Root%\Program Files\7-Zip\7z.exe
  • %System Root%\Program Files\7-Zip\Lang\hy.txt
  • %System Root%\Program Files\7-Zip\Uninstall.exe
  • %System Root%\Program Files\7-Zip\7z.sfx
  • %System Root%\Program Files\7-Zip\Lang\ar.txt
  • %System Root%\Program Files\7-Zip\Lang\be.txt
  • %System Root%\Program Files\7-Zip\7z.dll
  • %System Root%\Program Files\7-Zip\Lang\ja.txt
  • %System Root%\Program Files\7-Zip\Lang\et.txt
  • %System Root%\Program Files\7-Zip\Lang\nn.txt
  • %System Root%\Program Files\7-Zip\Lang\fi.txt
  • %System Root%\Program Files\7-Zip\Lang\fur.txt
  • %System Root%\Program Files\7-Zip\Lang\ko.txt
  • %System Root%\Program Files\7-Zip\Lang\is.txt
  • %System Root%\Program Files\7-Zip\Lang\tt.txt
  • %System Root%\Program Files\7-Zip\Lang\az.txt
  • %System Root%\Program Files\7-Zip\Lang\ast.txt
  • %System Root%\Program Files\7-Zip\Lang\hu.txt
  • %System Root%\Program Files\7-Zip\Lang\ps.txt
  • %System Root%\Program Files\7-Zip\Lang\af.txt
  • %System Root%\Program Files\7-Zip\Lang\lv.txt
  • %System Root%\Program Files\7-Zip\Lang\de.txt
  • %System Root%\Program Files\7-Zip\Lang\mng.txt
  • %System Root%\Program Files\7-Zip\Lang\sa.txt
  • %System Root%\Program Files\7-Zip\Lang\vi.txt
  • %System Root%\Program Files\7-Zip\Lang\it.txt
  • %System Root%\Program Files\7-Zip\Lang\ka.txt
  • %System Root%\Program Files\7-Zip\Lang\ru.txt
  • %System Root%\Program Files\7-Zip\Lang\co.txt
  • %System Root%\Program Files\7-Zip\Lang\lij.txt
  • %System Root%\Program Files\7-Zip\Lang\mr.txt
  • %System Root%\Program Files\7-Zip\Lang\sv.txt
  • %System Root%\Program Files\7-Zip\Lang\ga.txt
  • %System Root%\Program Files\7-Zip\Lang\mn.txt
  • %System Root%\Program Files\7-Zip\Lang\es.txt
  • %System Root%\Program Files\7-Zip\Lang\cy.txt
  • %System Root%\Program Files\7-Zip\Lang\da.txt
  • %System Root%\Program Files\7-Zip\License.txt
  • %System Root%\Program Files\7-Zip\Lang\sq.txt
  • %System Root%\Program Files\7-Zip\Lang\fy.txt
  • %System Root%\Program Files\7-Zip\Lang\th.txt
  • %System Root%\Program Files\7-Zip\Lang\gu.txt
  • %System Root%\Program Files\7-Zip\Lang\mng2.txt
  • %System Root%\Program Files\7-Zip\7-zip.chm
  • %System Root%\Program Files\7-Zip\Lang\fr.txt
  • %System Root%\Program Files\7-Zip\Lang\mk.txt
  • %System Root%\Program Files\7-Zip\Lang\ku-ckb.txt
  • %System Root%\Program Files\7-Zip\Lang\kab.txt
  • %System Root%\Program Files\7-Zip\Lang\io.txt
  • %System Root%\Program Files\7-Zip\History.txt
  • %System Root%\Program Files\7-Zip\Lang\an.txt
  • %System Root%\Program Files\7-Zip\descript.ion
  • %System Root%\Program Files\7-Zip\Lang\si.txt
  • %System Root%\Program Files\7-Zip\Lang\pt-br.txt
  • %System Root%\Program Files\7-Zip\Lang\gl.txt
  • %User Temp%\mqsvw.exe
  • %System Root%\Program Files\7-Zip\Lang\pl.txt
  • %System Root%\Program Files\7-Zip\Lang\hi.txt
  • %System Root%\Program Files\7-Zip\Lang\sr-spl.txt
  • %System Root%\Program Files\7-Zip\Lang\bn.txt
  • %System Root%\Program Files\7-Zip\Lang\ms.txt
  • %System Root%\Program Files\7-Zip\Lang\ext.txt
  • %System Root%\Program Files\7-Zip\Lang\eo.txt
  • %AppDataLocal%\GDIPFONTCACHEV1.DAT
  • %System Root%\Program Files\7-Zip\Lang\eu.txt
  • %System Root%\Program Files\7-Zip\Lang\el.txt
  • %System Root%\Program Files\7-Zip\Lang\ku.txt
  • %System Root%\Program Files\7-Zip\Lang\zh-tw.txt
  • %User Temp%\test.exe

(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). . %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).. %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://bohack51.{BLOCKED}s.net

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.SKEEYAH.USASHAG20

[ Learn More ]
  1. 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.
  2. 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.
  3. 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\7-Zip
    • Path64 = "%System Root%\Program Files\7-Zip"
  • In HKEY_CURRENT_USER\Software\7-Zip
    • Path = "%System Root%\Program Files\7-Zip"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\7-Zip
    • Path64 = "%System Root%\Program Files\7-Zip"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\7-Zip
    • Path = "%System Root%\Program Files\7-Zip"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}
    • (Default) = "7-Zip Shell Extension"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32
    • (Default) = "%System Root%\Program Files\7-Zip\7-zip32.dll"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32
    • ThreadingModel = "Apartment"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{23170F69-40C1-278A-1000-000100020000}
    • (Default) = "7-Zip Shell Extension"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32
    • (Default) = "%System Root%\Program Files\7-Zip\7-zip.dll"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32
    • ThreadingModel = "Apartment"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\*\shellex\ContextMenuHandlers\7-Zip
    • (Default) = "{23170F69-40C1-278A-1000-000100020000}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Directory\shellex\ContextMenuHandlers\7-Zip
    • (Default) = "{23170F69-40C1-278A-1000-000100020000}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Folder\ShellEx\ContextMenuHandlers\7-Zip
    • (Default) = "{23170F69-40C1-278A-1000-000100020000}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Directory\shellex\DragDropHandlers\7-Zip
    • (Default) = "{23170F69-40C1-278A-1000-000100020000}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Drive\shellex\DragDropHandlers\7-Zip
    • (Default) = "{23170F69-40C1-278A-1000-000100020000}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved
    • {23170F69-40C1-278A-1000-000100020000} = "7-Zip Shell Extension"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved
    • {23170F69-40C1-278A-1000-000100020000} = "7-Zip Shell Extension"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\7zFM.exe
    • (Default) = "%System Root%\Program Files\7-Zip\7zFM.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\7zFM.exe
    • Path = "%System Root%\Program Files\7-Zip"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\7-Zip
    • DisplayName = "7-Zip 19.00 (x64)"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\7-Zip
    • DisplayVersion = "19.00"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\7-Zip
    • DisplayIcon = "%System Root%\Program Files\7-Zip\7zFM.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\7-Zip
    • InstallLocation = "%System Root%\Program Files\7-Zip"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\7-Zip
    • UninstallString = "%System Root%\Program Files\7-Zip\Uninstall.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\7-Zip
    • NoModify = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\7-Zip
    • NoRepair = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\7-Zip
    • EstimatedSize = "5082"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\7-Zip
    • VersionMajor = "19"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\7-Zip
    • VersionMinor = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\7-Zip
    • Publisher = "Igor Pavlov"
  • In HKEY_CURRENT_USER
    • di = "!"

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.
  • %System Root%\Program Files\7-Zip\Lang\br.txt
  • %System Root%\Program Files\7-Zip\Lang\sl.txt
  • %System Root%\Program Files\7-Zip\Lang\cs.txt
  • %System Root%\Program Files\7-Zip\Lang\ro.txt
  • %System Root%\Program Files\7-Zip\Lang\yo.txt
  • %System Root%\Program Files\7-Zip\Lang\va.txt
  • %System Root%\Program Files\7-Zip\Lang\nb.txt
  • %System Root%\Program Files\7-Zip\Lang\en.ttt
  • %System Root%\Program Files\7-Zip\Lang\ug.txt
  • %System Root%\Program Files\7-Zip\Lang\sr-spc.txt
  • %System Root%\Program Files\7-Zip\7zFM.exe
  • %System Root%\Program Files\7-Zip\7zG.exe
  • %System Root%\Program Files\7-Zip\Lang\tr.txt
  • %System Root%\Program Files\7-Zip\Lang\ky.txt
  • %System Root%\Program Files\7-Zip\Lang\uk.txt
  • %System Root%\Program Files\7-Zip\Lang\lt.txt
  • %System Root%\Program Files\7-Zip\Lang\zh-cn.txt
  • %System Root%\Program Files\7-Zip\Lang\ba.txt
  • %System Root%\Program Files\7-Zip\Lang\id.txt
  • %System Root%\Program Files\7-Zip\7zCon.sfx
  • %System Root%\Program Files\7-Zip\Lang\kaa.txt
  • %System Root%\Program Files\7-Zip\Lang\uz.txt
  • %System Root%\Program Files\7-Zip\Lang\sk.txt
  • %System Root%\Program Files\7-Zip\Lang\pa-in.txt
  • %System Root%\Program Files\7-Zip\7-zip32.dll
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\7-Zip\7-Zip Help.lnk
  • %System Root%\Program Files\7-Zip\Lang\nl.txt
  • %System Root%\Program Files\7-Zip\Lang\kk.txt
  • %System Root%\Program Files\7-Zip\Lang\fa.txt
  • %System Root%\Program Files\7-Zip\Lang\bg.txt
  • %System Root%\Program Files\7-Zip\Lang\ta.txt
  • %System Root%\Program Files\7-Zip\readme.txt
  • %System Root%\Program Files\7-Zip\7-zip.dll
  • %System Root%\Program Files\7-Zip\Lang\hr.txt
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\7-Zip\7-Zip File Manager.lnk
  • %System Root%\Program Files\7-Zip\Lang\pt.txt
  • %System Root%\Program Files\7-Zip\Lang\ca.txt
  • %System Root%\Program Files\7-Zip\Lang\he.txt
  • %System Root%\Program Files\7-Zip\Lang\ne.txt
  • %System Root%\Program Files\7-Zip\7z.exe
  • %System Root%\Program Files\7-Zip\Lang\hy.txt
  • %System Root%\Program Files\7-Zip\Uninstall.exe
  • %System Root%\Program Files\7-Zip\7z.sfx
  • %System Root%\Program Files\7-Zip\Lang\ar.txt
  • %System Root%\Program Files\7-Zip\Lang\be.txt
  • %System Root%\Program Files\7-Zip\7z.dll
  • %System Root%\Program Files\7-Zip\Lang\ja.txt
  • %System Root%\Program Files\7-Zip\Lang\et.txt
  • %System Root%\Program Files\7-Zip\Lang\nn.txt
  • %System Root%\Program Files\7-Zip\Lang\fi.txt
  • %System Root%\Program Files\7-Zip\Lang\fur.txt
  • %System Root%\Program Files\7-Zip\Lang\ko.txt
  • %System Root%\Program Files\7-Zip\Lang\is.txt
  • %System Root%\Program Files\7-Zip\Lang\tt.txt
  • %System Root%\Program Files\7-Zip\Lang\az.txt
  • %System Root%\Program Files\7-Zip\Lang\ast.txt
  • %System Root%\Program Files\7-Zip\Lang\hu.txt
  • %System Root%\Program Files\7-Zip\Lang\ps.txt
  • %System Root%\Program Files\7-Zip\Lang\af.txt
  • %System Root%\Program Files\7-Zip\Lang\lv.txt
  • %System Root%\Program Files\7-Zip\Lang\de.txt
  • %System Root%\Program Files\7-Zip\Lang\mng.txt
  • %System Root%\Program Files\7-Zip\Lang\sa.txt
  • %System Root%\Program Files\7-Zip\Lang\vi.txt
  • %System Root%\Program Files\7-Zip\Lang\it.txt
  • %System Root%\Program Files\7-Zip\Lang\ka.txt
  • %System Root%\Program Files\7-Zip\Lang\ru.txt
  • %System Root%\Program Files\7-Zip\Lang\co.txt
  • %System Root%\Program Files\7-Zip\Lang\lij.txt
  • %System Root%\Program Files\7-Zip\Lang\mr.txt
  • %System Root%\Program Files\7-Zip\Lang\sv.txt
  • %System Root%\Program Files\7-Zip\Lang\ga.txt
  • %System Root%\Program Files\7-Zip\Lang\mn.txt
  • %System Root%\Program Files\7-Zip\Lang\es.txt
  • %System Root%\Program Files\7-Zip\Lang\cy.txt
  • %System Root%\Program Files\7-Zip\Lang\da.txt
  • %System Root%\Program Files\7-Zip\License.txt
  • %System Root%\Program Files\7-Zip\Lang\sq.txt
  • %System Root%\Program Files\7-Zip\Lang\fy.txt
  • %System Root%\Program Files\7-Zip\Lang\th.txt
  • %System Root%\Program Files\7-Zip\Lang\gu.txt
  • %System Root%\Program Files\7-Zip\Lang\mng2.txt
  • %System Root%\Program Files\7-Zip\7-zip.chm
  • %System Root%\Program Files\7-Zip\Lang\fr.txt
  • %System Root%\Program Files\7-Zip\Lang\mk.txt
  • %System Root%\Program Files\7-Zip\Lang\ku-ckb.txt
  • %System Root%\Program Files\7-Zip\Lang\kab.txt
  • %System Root%\Program Files\7-Zip\Lang\io.txt
  • %System Root%\Program Files\7-Zip\History.txt
  • %System Root%\Program Files\7-Zip\Lang\an.txt
  • %System Root%\Program Files\7-Zip\descript.ion
  • %System Root%\Program Files\7-Zip\Lang\si.txt
  • %System Root%\Program Files\7-Zip\Lang\pt-br.txt
  • %System Root%\Program Files\7-Zip\Lang\gl.txt
  • %User Temp%\mqsvw.exe
  • %System Root%\Program Files\7-Zip\Lang\pl.txt
  • %System Root%\Program Files\7-Zip\Lang\hi.txt
  • %System Root%\Program Files\7-Zip\Lang\sr-spl.txt
  • %System Root%\Program Files\7-Zip\Lang\bn.txt
  • %System Root%\Program Files\7-Zip\Lang\ms.txt
  • %System Root%\Program Files\7-Zip\Lang\ext.txt
  • %System Root%\Program Files\7-Zip\Lang\eo.txt
  • %AppDataLocal%\GDIPFONTCACHEV1.DAT
  • %System Root%\Program Files\7-Zip\Lang\eu.txt
  • %System Root%\Program Files\7-Zip\Lang\el.txt
  • %System Root%\Program Files\7-Zip\Lang\ku.txt
  • %System Root%\Program Files\7-Zip\Lang\zh-tw.txt
  • %User Temp%\test.exe

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.
  • %User Profile%\AppData
  • %System Root%\Program Files\7-Zip\Lang
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\7-Zip
  • %System Root%\Users
  • %System Root%\Program Files\7-Zip

Step 6

Scan your computer with your Trend Micro product to delete files detected as Trojan.Win32.SKEEYAH.USASHAG20. 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.

  • %Start Menu%\Programs\7-Zip\7-Zip Help.lnk
  • %Start Menu%\Programs\7-Zip\7-Zip File Manager.lnk


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