TROJ_AGENT_026976.TOMB
Adware:Win32/GameVance (Microsoft); GameVance.gen.g. (McAfee); Gamevance (Symantec); Gamevance LLC (v) (Sunbelt); Application:W32/GameVance.K (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
2,288,416 bytes
EXE
Yes
12 Oct 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 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).. %Desktop% is the current user's desktop, which is usually C:\Documents and Settings\{User Name}\Desktop on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\Desktop on Windows Vista and 7.. %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.)
It adds the following registry keys:
HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
Gamevance
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"
HKEY_CURRENT_USER\Software\AppDataLow\
gvtl
uid = "c3efccac-f89b-4ee6-9758-255971d5c8ce-XX"
HKEY_CURRENT_USER\Software\AppDataLow\
gvtl
cid = "0"
HKEY_CURRENT_USER\Software\AppDataLow\
gvtl
ct = "{random values}"
HKEY_CURRENT_USER\Software\AppDataLow\
gvtl
ci = "e1"
HKEY_CURRENT_USER\Software\AppDataLow\
gvtl
cid = "18c2496"
HKEY_CURRENT_USER\Software\AppDataLow\
gvtl
sc1u = "{random characters}"
HKEY_CURRENT_USER\Software\AppDataLow\
gvtl
d = "0"
HKEY_CURRENT_USER\Software\AppDataLow\
gvtl
esint = "5"
HKEY_CURRENT_USER\Software\AppDataLow\
gvtl
domfqc = "1f4"
HKEY_CURRENT_USER\Software\AppDataLow\
gvtl
domfqt = "258"
HKEY_CURRENT_USER\Software\AppDataLow\
gvtl
sc2u = "http://tt.{BLOCKED}nce.com/acttr?v=0&a=OLDCLI&t=1"
HKEY_CURRENT_USER\Software\AppDataLow\
gvtl
nos2 = "1"
HKEY_CURRENT_USER\Software\AppDataLow\
gvtl
scr1 = "{random values}"
HKEY_CURRENT_USER\Software\AppDataLow\
gvtl
eu = "{random values}"
HKEY_CURRENT_USER\Software\AppDataLow\
gvtl
eus = "d8"
HKEY_CURRENT_USER\Software\AppDataLow\
gvtl
jss = "1"
It modifies the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
DirectDraw\MostRecentApplication
Name = "iexplore.exe"
(Note: The default value data of the said registry entry is iexplore.exe.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
DirectDraw\MostRecentApplication
ID = "4117b81"
(Note: The default value data of the said registry entry is 41107b81.)
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
Other Details
This Trojan connects to the following possibly malicious URL:
- http://www.{BLOCKED}nce.com/aj/inst.php?{random characters}
- http://update.{BLOCKED}nce.com/m/updcnt.asp?{random characters}
- http://cf.{BLOCKED}nce.com/m/elist.asp?grsl=110&grsid=25961622&snum=0
- http://tt.{BLOCKED}nce.com/bar/{BLOCKED}nce.bmp
- http://cf.{BLOCKED}nce.com/config.php?{random characters}
- http://cf.{BLOCKED}nce.com/cmn?{random characters}
- http://cf.{BLOCKED}nce.com/eurls.php
This report is generated via an automated analysis system.
SOLUTION
9.200
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
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_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"
- In HKEY_CURRENT_USER\Software\AppDataLow\gvtl
- uid = "c3efccac-f89b-4ee6-9758-255971d5c8ce-XX"
- In HKEY_CURRENT_USER\Software\AppDataLow\gvtl
- cid = "0"
- In HKEY_CURRENT_USER\Software\AppDataLow\gvtl
- ct = "{random values}"
- In HKEY_CURRENT_USER\Software\AppDataLow\gvtl
- ci = "e1"
- In HKEY_CURRENT_USER\Software\AppDataLow\gvtl
- cid = "18c2496"
- In HKEY_CURRENT_USER\Software\AppDataLow\gvtl
- sc1u = "{random characters}"
- In HKEY_CURRENT_USER\Software\AppDataLow\gvtl
- d = "0"
- In HKEY_CURRENT_USER\Software\AppDataLow\gvtl
- esint = "5"
- In HKEY_CURRENT_USER\Software\AppDataLow\gvtl
- domfqc = "1f4"
- In HKEY_CURRENT_USER\Software\AppDataLow\gvtl
- domfqt = "258"
- In HKEY_CURRENT_USER\Software\AppDataLow\gvtl
- sc2u = "http://tt.{BLOCKED}nce.com/acttr?v=0&a=OLDCLI&t=1"
- In HKEY_CURRENT_USER\Software\AppDataLow\gvtl
- nos2 = "1"
- In HKEY_CURRENT_USER\Software\AppDataLow\gvtl
- scr1 = "{random values}"
- In HKEY_CURRENT_USER\Software\AppDataLow\gvtl
- eu = "{random values}"
- In HKEY_CURRENT_USER\Software\AppDataLow\gvtl
- eus = "d8"
- In HKEY_CURRENT_USER\Software\AppDataLow\gvtl
- jss = "1"
Step 6
Restore these modified registry values
Important:Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this only if you know how to or you can seek your system administrator's help. You may also check out this Microsoft article first before modifying your computer's registry.
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication
- From: Name = "iexplore.exe"
To: Name = ""iexplore.exe""
- From: Name = "iexplore.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication
- From: ID = "4117b81"
To: ID = ""41107b81""
- From: ID = "4117b81"
Step 7
Search and delete these components
- %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
Step 8
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 9
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_AGENT_026976.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 10
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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