TROJ_AGENT_042431.TOMB
Adware:Win32/GameVance (Microsoft); GameVance.gen.g. (McAfee); Gamevance LLC (v) (Sunbelt); Application:W32/GameVance.L (FSecure)
Windows 2000, Windows XP, Windows Server 2003
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
2,226,464 bytes
EXE
Yes
29 Jun 2012
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 creates the following folders:
- %Program Files%\Gamevance
- %User Profile%\Application Data\Mozilla
- %User Profile%\Mozilla\Extensions
- %User Profile%\Extensions\{ec8030f7-c20a-464f-9b0e-13a3a9e97384}
- %User Profile%\{ec8030f7-c20a-464f-9b0e-13a3a9e97384}\textlinks@gamevance.com
- %User Profile%\textlinks@gamevance.com\components
- %User Profile%\textlinks@gamevance.com\chrome
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
Gamevance = "%Program Files%\Gamevance\gamevance32.exe a"
It 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\{0ED403E8-470A-4a8a-85A4-D7688CFE39A3}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{beaC7DC8-E106-4C6A-931E-5A42E7362883}
Other System Modifications
This Trojan deletes the following files:
- %Program Files%\Gamevance\arsplg.dll
- %Desktop%\ArcadeRockstar.lnk
- %Application Data%\IconCache.db
(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.. %Desktop% is the current user's desktop, which is usually C:\Windows\Profiles\{user name}\Desktop on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Desktop on Windows NT, and C:\Documents and Settings\{User Name}\Desktop on Windows 2000, XP, and Server 2003.. %Application Data% is the current user's Application Data folder, which is usually C:\Windows\Profiles\{user name}\Application Data on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Application Data on Windows NT, and C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, XP, and Server 2003.)
It adds the following registry keys:
HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
Gamevance
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects
HKEY_CLASSES_ROOT\CLSID\{0ED403E8-470A-4a8a-85A4-D7688CFE39A3}
HKEY_CLASSES_ROOT\CLSID\{0ED403E8-470A-4a8a-85A4-D7688CFE39A3}\
InprocServer32
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
Google Chrome
HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
Google Chrome
HKEY_CURRENT_USER\Software\AppDataLow\
gvtl
HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\
System\BIOS
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Ext\
Settings\{0ED403E8-470A-4a8a-85A4-D7688CFE39A3}
HKEY_CLASSES_ROOT\AppID\GamevanceText.DLL
HKEY_CLASSES_ROOT\GamevanceText.Linker.1
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
GamevanceText.Linker.1\CLSID
HKEY_CLASSES_ROOT\GamevanceText.Linker
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
GamevanceText.Linker\CLSID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
GamevanceText.Linker\CurVer
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{beaC7DC8-E106-4C6A-931E-5A42E7362883}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{beaC7DC8-E106-4C6A-931E-5A42E7362883}\ProgID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{beaC7DC8-E106-4C6A-931E-5A42E7362883}\VersionIndependentProgID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{beaC7DC8-E106-4C6A-931E-5A42E7362883}\Programmable
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{beaC7DC8-E106-4C6A-931E-5A42E7362883}\InprocServer32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{beaC7DC8-E106-4C6A-931E-5A42E7362883}\TypeLib
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Gamevance
DisplayName = "Gamevance"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Gamevance
UninstallString = "%Program Files%\Gamevance\gvun.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Gamevance
DisplayIcon = "%Program Files%\Gamevance\gvun.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{0ED403E8-470A-4a8a-85A4-D7688CFE39A3}
NoExplorer = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{0ED403E8-470A-4a8a-85A4-D7688CFE39A3}\InprocServer32
ThreadingModel = "Apartment"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\GamevanceText.DLL
AppID = "{beaC7DC8-E106-4C6A-931E-5A42E7362883}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{beaC7DC8-E106-4C6A-931E-5A42E7362883}\InprocServer32
ThreadingModel = "Apartment"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{beaC7DC8-E106-4C6A-931E-5A42E7362883}
NoExplorer = "1"
Dropping Routine
This Trojan drops the following files:
- %Program Files%\Gamevance\gamevancelib32.dll
- %Program Files%\Gamevance\gamevance32.exe
- %Program Files%\Gamevance\gvun.exe
- %Program Files%\Gamevance\ars.cfg
- %Program Files%\Gamevance\icon.ico
- %Program Files%\Gamevance\gvtl.dll
- %Program Files%\Gamevance\gvff.tmp
- %User Profile%\textlinks@gamevance.com\chrome.manifest
- %User Profile%\textlinks@gamevance.com\install.rdf
- %User Profile%\components\gvtlf.dll
- %User Profile%\components\gvtlf.xpt
- %User Profile%\chrome\gvtextlinks.jar
- %User Temp%\dplinst.exe
Other Details
This Trojan connects to the following possibly malicious URL:
- http://www.{BLOCKED}nce.com/aj/inst.php?{random characters}
- http://af.{BLOCKED}{BLOCKED}.facdn.com/{BLOCKED}{BLOCKED}/download/dogpiletoolbar/Dogpile_Toolbar.exe
This report is generated via an automated analysis system.
SOLUTION
9.200
Step 1
For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.
Step 2
Restart in Safe Mode
Step 3
Close all opened browser windows
Step 4
Delete this registry key
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\Microsoft\Windows\CurrentVersion\Uninstall
- Gamevance
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer
- Browser Helper Objects
- In HKEY_CLASSES_ROOT\CLSID
- {0ED403E8-470A-4a8a-85A4-D7688CFE39A3}
- In HKEY_CLASSES_ROOT\CLSID\{0ED403E8-470A-4a8a-85A4-D7688CFE39A3}
- InprocServer32
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall
- Google Chrome
- In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall
- Google Chrome
- In HKEY_CURRENT_USER\Software\AppDataLow
- gvtl
- In HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System
- BIOS
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Ext\Settings
- {0ED403E8-470A-4a8a-85A4-D7688CFE39A3}
- In HKEY_CLASSES_ROOT\AppID
- GamevanceText.DLL
- In HKEY_CLASSES_ROOT
- GamevanceText.Linker.1
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\GamevanceText.Linker.1
- CLSID
- In HKEY_CLASSES_ROOT
- GamevanceText.Linker
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\GamevanceText.Linker
- CLSID
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\GamevanceText.Linker
- CurVer
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
- {beaC7DC8-E106-4C6A-931E-5A42E7362883}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{beaC7DC8-E106-4C6A-931E-5A42E7362883}
- ProgID
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{beaC7DC8-E106-4C6A-931E-5A42E7362883}
- VersionIndependentProgID
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{beaC7DC8-E106-4C6A-931E-5A42E7362883}
- Programmable
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{beaC7DC8-E106-4C6A-931E-5A42E7362883}
- InprocServer32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{beaC7DC8-E106-4C6A-931E-5A42E7362883}
- TypeLib
Step 5
Delete this registry value
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\Microsoft\Windows\CurrentVersion\Run
- Gamevance = "%Program Files%\Gamevance\gamevance32.exe a"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Gamevance
- DisplayName = "Gamevance"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Gamevance
- UninstallString = "%Program Files%\Gamevance\gvun.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Gamevance
- DisplayIcon = "%Program Files%\Gamevance\gvun.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{0ED403E8-470A-4a8a-85A4-D7688CFE39A3}
- NoExplorer = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{0ED403E8-470A-4a8a-85A4-D7688CFE39A3}\InprocServer32
- ThreadingModel = "Apartment"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID\GamevanceText.DLL
- AppID = "{beaC7DC8-E106-4C6A-931E-5A42E7362883}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{beaC7DC8-E106-4C6A-931E-5A42E7362883}\InprocServer32
- ThreadingModel = "Apartment"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{beaC7DC8-E106-4C6A-931E-5A42E7362883}
- NoExplorer = "1"
Step 6
Search and delete these files
- %Program Files%\Gamevance\gamevancelib32.dll
- %Program Files%\Gamevance\gamevance32.exe
- %Program Files%\Gamevance\gvun.exe
- %Program Files%\Gamevance\ars.cfg
- %Program Files%\Gamevance\icon.ico
- %Program Files%\Gamevance\gvtl.dll
- %Program Files%\Gamevance\gvff.tmp
- %User Profile%\textlinks@gamevance.com\chrome.manifest
- %User Profile%\textlinks@gamevance.com\install.rdf
- %User Profile%\components\gvtlf.dll
- %User Profile%\components\gvtlf.xpt
- %User Profile%\chrome\gvtextlinks.jar
- %User Temp%\dplinst.exe
Step 7
Search and delete these folders
- %Program Files%\Gamevance
- %User Profile%\Application Data\Mozilla
- %User Profile%\Mozilla\Extensions
- %User Profile%\Extensions\{ec8030f7-c20a-464f-9b0e-13a3a9e97384}
- %User Profile%\{ec8030f7-c20a-464f-9b0e-13a3a9e97384}\textlinks@gamevance.com
- %User Profile%\textlinks@gamevance.com\components
- %User Profile%\textlinks@gamevance.com\chrome
Step 8
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_AGENT_042431.TOMB. 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 9
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.
- %Program Files%\Gamevance\arsplg.dll
- %Desktop%\ArcadeRockstar.lnk
- %Application Data%\IconCache.db
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