PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Adware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This adware 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: 344,200 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 11 Jun 2014

Arrival Details

This adware 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 adware creates the following folders:

  • %User Temp%/545f7577
  • %User Temp%/545f7577/ooy46-aae@bgtslnetyplkio.edu
  • %User Temp%/545f7577/ooy46-aae@bgtslnetyplkio.edu/content
  • %User Temp%/545f7577/aibidmdghbjlmenlhdfnbacpgnocogcp
  • %System Root%\Documents and Settings\Administrator
  • %Application Data%\Google
  • %Application Data%\Google\Chrome
  • %Application Data%\Google\Chrome\User Data
  • %Application Data%\Google\Chrome\User Data\Default
  • %Application Data%\Google\Chrome\User Data\Default\Extensions
  • %Application Data%\Google\Chrome\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp
  • %Application Data%\Google\Chrome\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2
  • %System Root%\Documents and Settings\ASPNET
  • %System Root%\Documents and Settings\Guest
  • %System Root%\Documents and Settings\HelpAssistant
  • %System Root%\Documents and Settings\SUPPORT_388945a0
  • %Application Data%\Comodo
  • %Application Data%\Comodo\Dragon
  • %Application Data%\Comodo\Dragon\User Data
  • %Application Data%\Comodo\Dragon\User Data\Default
  • %Application Data%\Comodo\Dragon\User Data\Default\Extensions
  • %Application Data%\Comodo\Dragon\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp
  • %Application Data%\Comodo\Dragon\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2
  • %Application Data%\Google\Chrome SxS
  • %Application Data%\Google\Chrome SxS\User Data
  • %Application Data%\Google\Chrome SxS\User Data\Default
  • %Application Data%\Google\Chrome SxS\User Data\Default\Extensions
  • %Application Data%\Google\Chrome SxS\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp
  • %Application Data%\Google\Chrome SxS\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2
  • %Application Data%\Torch
  • %Application Data%\Torch\User Data
  • %Application Data%\Torch\User Data\Default
  • %Application Data%\Torch\User Data\Default\Extensions
  • %Application Data%\Torch\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp
  • %Application Data%\Torch\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2
  • %Application Data%\Chromatic Browser
  • %Application Data%\Chromatic Browser\User Data
  • %Application Data%\Chromatic Browser\User Data\Default
  • %Application Data%\Chromatic Browser\User Data\Default\Extensions
  • %Application Data%\Chromatic Browser\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp
  • %Application Data%\Chromatic Browser\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2
  • %System%\GroupPolicy
  • %System%\GroupPolicy\Machine
  • %System%\GroupPolicy\User
  • %Program Files%\CostMin
  • %User Profile%\AppData
  • %User Profile%\AppData\LocalLow
  • %User Profile%\LocalLow\{FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B}
  • %User Profile%\Application Data\CostMin
  • %User Profile%\Application Data\2635c994ef08bff3

(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, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.. %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.. %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.. %System% is the Windows system folder, which is usually C:\Windows\System32.. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)

Autostart Technique

This adware registers itself as a BHO to ensure its automatic execution every time Internet Explorer is used by adding the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B}

Other System Modifications

This adware adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Google\
Update\ClientState\{8A69D345-D564-463C-AFF1-A69D9E530F96}

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Google\Update

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Group Policy Objects\
{A5633E92-6A5E-46E0-B110-0404E62EA810}User

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Group Policy Objects\
{A5633E92-6A5E-46E0-B110-0404E62EA810}Machine

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Group Policy Objects\
{A5633E92-6A5E-46E0-B110-0404E62EA810}Machine\Software\Policies\
Google\Chrome

HKEY_CURRENT_USER\Software\RegisteredApplicationsEx

HKEY_CLASSES_ROOT\CostMin.CostMin.2.2

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CostMin.CostMin.2.2\CLSID

HKEY_CLASSES_ROOT\CostMin.CostMin

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CostMin.CostMin\CLSID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CostMin.CostMin\CurVer

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B}\ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B}\VersionIndependentProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B}\Programmable

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B}\InprocServer32

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\ApprovedExtensionsMigration

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\ApprovedExtensionsMigration\{FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B}

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
Ext

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
Ext\CLSID

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Ext

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Ext\
PreApproved

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Ext\
PreApproved\{FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\
FLAGS

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\
0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\
0\win32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\
HELPDIR

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Google\
Update\ClientState\{8A69D345-D564-463C-AFF1-A69D9E530F96}
ap = "2.0-dev-multi-chrome"

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Google\Update
UpdateDefault = "0"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Group Policy Objects\
{A5633E92-6A5E-46E0-B110-0404E62EA810}Machine\Software\Policies\
Google\Chrome
MetricsReportingEnabled = "0"

HKEY_CURRENT_USER\Software\RegisteredApplicationsEx
2f76e58f0ebc9ad446b2d568a20c4f20 = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B}
NoExplorer = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B}\InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
Ext\CLSID
{FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B} = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib
Version = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib
Version = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib
Version = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
UninstallString = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
SilentUninstall = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
DisplayName = "CostMin"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
URLInfoAbout = "http://{BLOCKED}n.info"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
URLUpdateInfo = "http://{BLOCKED}n.info"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
Publisher = "CostMin"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
DisplayVersion = "4.2.0.1600"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
NoRepair = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
NoModify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
CategoryName = "Apps"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
InstallDate = "20140610"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
DisplayIcon = "%System%\msiexec.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
_In = "20140610"

It deletes the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Group Policy Objects

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Group Policy Objects\
{A5633E92-6A5E-46E0-B110-0404E62EA810}Machine\Software

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Group Policy Objects\
{A5633E92-6A5E-46E0-B110-0404E62EA810}Machine\Software\Policies

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Group Policy Objects\
{A5633E92-6A5E-46E0-B110-0404E62EA810}Machine\Software\Policies\
Google

Dropping Routine

This adware drops the following files:

  • %Application Data%\Google\Chrome\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\background.html
  • %Application Data%\Google\Chrome\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\content.js
  • %Application Data%\Google\Chrome\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\lsdb.js
  • %Application Data%\Google\Chrome\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\manifest.json
  • %Application Data%\Google\Chrome\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\taK3XXAIgxTQ.js
  • %Application Data%\Comodo\Dragon\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\background.html
  • %Application Data%\Comodo\Dragon\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\content.js
  • %Application Data%\Comodo\Dragon\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\lsdb.js
  • %Application Data%\Comodo\Dragon\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\manifest.json
  • %Application Data%\Comodo\Dragon\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\taK3XXAIgxTQ.js
  • %Application Data%\Google\Chrome SxS\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\background.html
  • %Application Data%\Google\Chrome SxS\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\content.js
  • %Application Data%\Google\Chrome SxS\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\lsdb.js
  • %Application Data%\Google\Chrome SxS\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\manifest.json
  • %Application Data%\Google\Chrome SxS\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\taK3XXAIgxTQ.js
  • %Application Data%\Torch\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\background.html
  • %Application Data%\Torch\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\content.js
  • %Application Data%\Torch\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\lsdb.js
  • %Application Data%\Torch\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\manifest.json
  • %Application Data%\Torch\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\taK3XXAIgxTQ.js
  • %Application Data%\Chromatic Browser\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\background.html
  • %Application Data%\Chromatic Browser\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\content.js
  • %Application Data%\Chromatic Browser\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\lsdb.js
  • %Application Data%\Chromatic Browser\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\manifest.json
  • %Application Data%\Chromatic Browser\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\taK3XXAIgxTQ.js
  • %System%\GroupPolicy\Machine\Registry.pol
  • %Program Files%\CostMin\N5j4F2a51S.dll
  • %Program Files%\CostMin\N5j4F2a51S.tlb
  • %Program Files%\CostMin\N5j4F2a51S.dat
  • %Program Files%\CostMin\N5j4F2a51S.x64.dll
  • %User Profile%\CostMin\bdgSJTL7nOD.exe
  • %User Profile%\CostMin\bdgSJTL7nOD.dat
  • %User Profile%\2635c994ef08bff3\{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
  • %User Temp%\pl490c2ac9.fyt
  • %User Temp%\294823_.exe
  • %User Temp%\18be6784_.exe
  • %User Temp%/545f7577/bdgSJTL7nOD.dat
  • %User Temp%/545f7577/bdgSJTL7nOD.exe
  • %User Temp%/545f7577/Drze3.dll
  • %User Temp%/545f7577/N5j4F2a51S.x64.dll
  • %User Temp%/545f7577/N5j4F2a51S.tlb
  • %User Temp%/545f7577/N5j4F2a51S.dll
  • %User Temp%/545f7577/ooy46-aae@bgtslnetyplkio.edu/content/bg.js
  • %User Temp%/545f7577/ooy46-aae@bgtslnetyplkio.edu/install.rdf
  • %User Temp%/545f7577/ooy46-aae@bgtslnetyplkio.edu/chrome.manifest
  • %User Temp%/545f7577/ooy46-aae@bgtslnetyplkio.edu/bootstrap.js
  • %User Temp%/545f7577/aibidmdghbjlmenlhdfnbacpgnocogcp/lsdb.js
  • %User Temp%/545f7577/aibidmdghbjlmenlhdfnbacpgnocogcp/content.js
  • %User Temp%/545f7577/aibidmdghbjlmenlhdfnbacpgnocogcp/manifest.json
  • %User Temp%/545f7577/aibidmdghbjlmenlhdfnbacpgnocogcp/background.html
  • %User Temp%/545f7577/aibidmdghbjlmenlhdfnbacpgnocogcp/taK3XXAIgxTQ.js

(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, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.. %System% is the Windows system folder, which is usually C:\Windows\System32.. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)

Other Details

This adware connects to the following possibly malicious URL:

  • http://download.{BLOCKED}n.info/?{random characters}
  • {BLOCKED}2.197.109
  • {BLOCKED}1.116.97

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine: 9.700

Step 1

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

Step 2

Close all opened browser windows

Step 3

Delete this registry key

[ 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_LOCAL_MACHINE\SOFTWARE\Google\Update\ClientState
    • {8A69D345-D564-463C-AFF1-A69D9E530F96}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google
    • Update
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Group Policy Objects
    • {A5633E92-6A5E-46E0-B110-0404E62EA810}User
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Group Policy Objects
    • {A5633E92-6A5E-46E0-B110-0404E62EA810}Machine
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Group Policy Objects\{A5633E92-6A5E-46E0-B110-0404E62EA810}Machine\Software\Policies\Google
    • Chrome
  • In HKEY_CURRENT_USER\Software
    • RegisteredApplicationsEx
  • In HKEY_CLASSES_ROOT
    • CostMin.CostMin.2.2
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CostMin.CostMin.2.2
    • CLSID
  • In HKEY_CLASSES_ROOT
    • CostMin.CostMin
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CostMin.CostMin
    • CLSID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CostMin.CostMin
    • CurVer
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    • {FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B}
    • ProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B}
    • VersionIndependentProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B}
    • Programmable
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B}
    • InprocServer32
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer
    • ApprovedExtensionsMigration
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration
    • {FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies
    • Ext
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Ext
    • CLSID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
    • Ext
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext
    • PreApproved
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\PreApproved
    • {FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
    • {E2343056-CC08-46AC-B898-BFC7ACF4E755}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}
    • 1.0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0
    • FLAGS
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0
    • 0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\0
    • win32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0
    • HELPDIR
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
    • {9B41579A-1996-42F9-8F84-7B7786818CEF}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}
    • ProxyStubClsid
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
    • {7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}
    • ProxyStubClsid
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
    • {EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}
    • ProxyStubClsid
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
    • {2F5F003B-C71B-72E3-42B4-DE51AB079EB2}

Step 4

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_LOCAL_MACHINE\SOFTWARE\Google\Update\ClientState\{8A69D345-D564-463C-AFF1-A69D9E530F96}
    • ap = "2.0-dev-multi-chrome"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google\Update
    • UpdateDefault = "0"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Group Policy Objects\{A5633E92-6A5E-46E0-B110-0404E62EA810}Machine\Software\Policies\Google\Chrome
    • MetricsReportingEnabled = "0"
  • In HKEY_CURRENT_USER\Software\RegisteredApplicationsEx
    • 2f76e58f0ebc9ad446b2d568a20c4f20 = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B}
    • NoExplorer = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B}\InprocServer32
    • ThreadingModel = "Apartment"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Ext\CLSID
    • {FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B} = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib
    • Version = "1.0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib
    • Version = "1.0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib
    • Version = "1.0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
    • UninstallString = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
    • SilentUninstall = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
    • DisplayName = "CostMin"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
    • URLInfoAbout = "http://{BLOCKED}n.info"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
    • URLUpdateInfo = "http://{BLOCKED}n.info"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
    • Publisher = "CostMin"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
    • DisplayVersion = "4.2.0.1600"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
    • NoRepair = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
    • NoModify = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
    • CategoryName = "Apps"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
    • InstallDate = "20140610"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
    • DisplayIcon = "%System%\msiexec.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}
    • _In = "20140610"

Step 5

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.
  • %User Temp%\pl490c2ac9.fyt
  • %User Temp%\294823_.exe
  • %User Temp%\18be6784_.exe
  • %User Temp%/545f7577/bdgSJTL7nOD.dat
  • %User Temp%/545f7577/bdgSJTL7nOD.exe
  • %User Temp%/545f7577/Drze3.dll
  • %User Temp%/545f7577/N5j4F2a51S.x64.dll
  • %User Temp%/545f7577/N5j4F2a51S.tlb
  • %User Temp%/545f7577/N5j4F2a51S.dll
  • %User Temp%/545f7577/ooy46-aae@bgtslnetyplkio.edu/content/bg.js
  • %User Temp%/545f7577/ooy46-aae@bgtslnetyplkio.edu/install.rdf
  • %User Temp%/545f7577/ooy46-aae@bgtslnetyplkio.edu/chrome.manifest
  • %User Temp%/545f7577/ooy46-aae@bgtslnetyplkio.edu/bootstrap.js
  • %User Temp%/545f7577/aibidmdghbjlmenlhdfnbacpgnocogcp/lsdb.js
  • %User Temp%/545f7577/aibidmdghbjlmenlhdfnbacpgnocogcp/content.js
  • %User Temp%/545f7577/aibidmdghbjlmenlhdfnbacpgnocogcp/manifest.json
  • %User Temp%/545f7577/aibidmdghbjlmenlhdfnbacpgnocogcp/background.html
  • %User Temp%/545f7577/aibidmdghbjlmenlhdfnbacpgnocogcp/taK3XXAIgxTQ.js
  • %Application Data%\Google\Chrome\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\background.html
  • %Application Data%\Google\Chrome\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\content.js
  • %Application Data%\Google\Chrome\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\lsdb.js
  • %Application Data%\Google\Chrome\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\manifest.json
  • %Application Data%\Google\Chrome\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\taK3XXAIgxTQ.js
  • %Application Data%\Comodo\Dragon\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\background.html
  • %Application Data%\Comodo\Dragon\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\content.js
  • %Application Data%\Comodo\Dragon\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\lsdb.js
  • %Application Data%\Comodo\Dragon\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\manifest.json
  • %Application Data%\Comodo\Dragon\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\taK3XXAIgxTQ.js
  • %Application Data%\Google\Chrome SxS\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\background.html
  • %Application Data%\Google\Chrome SxS\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\content.js
  • %Application Data%\Google\Chrome SxS\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\lsdb.js
  • %Application Data%\Google\Chrome SxS\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\manifest.json
  • %Application Data%\Google\Chrome SxS\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\taK3XXAIgxTQ.js
  • %Application Data%\Torch\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\background.html
  • %Application Data%\Torch\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\content.js
  • %Application Data%\Torch\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\lsdb.js
  • %Application Data%\Torch\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\manifest.json
  • %Application Data%\Torch\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\taK3XXAIgxTQ.js
  • %Application Data%\Chromatic Browser\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\background.html
  • %Application Data%\Chromatic Browser\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\content.js
  • %Application Data%\Chromatic Browser\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\lsdb.js
  • %Application Data%\Chromatic Browser\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\manifest.json
  • %Application Data%\Chromatic Browser\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2\taK3XXAIgxTQ.js
  • %System%\GroupPolicy\Machine\Registry.pol
  • %Program Files%\CostMin\N5j4F2a51S.dll
  • %Program Files%\CostMin\N5j4F2a51S.tlb
  • %Program Files%\CostMin\N5j4F2a51S.dat
  • %Program Files%\CostMin\N5j4F2a51S.x64.dll
  • %User Profile%\CostMin\bdgSJTL7nOD.exe
  • %User Profile%\CostMin\bdgSJTL7nOD.dat
  • %User Profile%\2635c994ef08bff3\{2F5F003B-C71B-72E3-42B4-DE51AB079EB2}

Step 6

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 Temp%/545f7577
  • %User Temp%/545f7577/ooy46-aae@bgtslnetyplkio.edu
  • %User Temp%/545f7577/ooy46-aae@bgtslnetyplkio.edu/content
  • %User Temp%/545f7577/aibidmdghbjlmenlhdfnbacpgnocogcp
  • %System Root%\Documents and Settings\Administrator
  • %Application Data%\Google
  • %Application Data%\Google\Chrome
  • %Application Data%\Google\Chrome\User Data
  • %Application Data%\Google\Chrome\User Data\Default
  • %Application Data%\Google\Chrome\User Data\Default\Extensions
  • %Application Data%\Google\Chrome\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp
  • %Application Data%\Google\Chrome\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2
  • %System Root%\Documents and Settings\ASPNET
  • %System Root%\Documents and Settings\Guest
  • %System Root%\Documents and Settings\HelpAssistant
  • %System Root%\Documents and Settings\SUPPORT_388945a0
  • %Application Data%\Comodo
  • %Application Data%\Comodo\Dragon
  • %Application Data%\Comodo\Dragon\User Data
  • %Application Data%\Comodo\Dragon\User Data\Default
  • %Application Data%\Comodo\Dragon\User Data\Default\Extensions
  • %Application Data%\Comodo\Dragon\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp
  • %Application Data%\Comodo\Dragon\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2
  • %Application Data%\Google\Chrome SxS
  • %Application Data%\Google\Chrome SxS\User Data
  • %Application Data%\Google\Chrome SxS\User Data\Default
  • %Application Data%\Google\Chrome SxS\User Data\Default\Extensions
  • %Application Data%\Google\Chrome SxS\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp
  • %Application Data%\Google\Chrome SxS\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2
  • %Application Data%\Torch
  • %Application Data%\Torch\User Data
  • %Application Data%\Torch\User Data\Default
  • %Application Data%\Torch\User Data\Default\Extensions
  • %Application Data%\Torch\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp
  • %Application Data%\Torch\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2
  • %Application Data%\Chromatic Browser
  • %Application Data%\Chromatic Browser\User Data
  • %Application Data%\Chromatic Browser\User Data\Default
  • %Application Data%\Chromatic Browser\User Data\Default\Extensions
  • %Application Data%\Chromatic Browser\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp
  • %Application Data%\Chromatic Browser\User Data\Default\Extensions\aibidmdghbjlmenlhdfnbacpgnocogcp\2.2
  • %System%\GroupPolicy
  • %System%\GroupPolicy\Machine
  • %System%\GroupPolicy\User
  • %Program Files%\CostMin
  • %User Profile%\AppData
  • %User Profile%\AppData\LocalLow
  • %User Profile%\LocalLow\{FEB7345F-1ECD-E2D6-2A9B-F5ECE2A3D50B}
  • %User Profile%\Application Data\CostMin
  • %User Profile%\Application Data\2635c994ef08bff3

Step 7

Scan your computer with your Trend Micro product to delete files detected as ADW_MINCOS. 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 this Knowledge Base page for more information.

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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion
    • Group Policy Objects
  • In HKEY_CURRENT_USER\Microsoft\Windows\CurrentVersion\Group Policy Objects\{A5633E92-6A5E-46E0-B110-0404E62EA810}Machine
    • Software
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Group Policy Objects\{A5633E92-6A5E-46E0-B110-0404E62EA810}Machine\Software
    • Policies
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Group Policy Objects\{A5633E92-6A5E-46E0-B110-0404E62EA810}Machine\Software\Policies
    • Google


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