TROJ_GAMETHI.GGU
Worm:Win32/Taterf.B (Microsoft), W32.Gammima.AG!gen4 (Symantec), PWS-Mmorpg.gen (McAfee), Trojan-GameThief.Win32.Magania.cznj (Kaspersky), Worm.Win32.Taterf (Sunbelt), W32/Taterf.B!worm (Fortinet)
Windows 2000, XP, Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
This Trojan may be dropped by other malware. It may be unknowingly downloaded by a user while visiting malicious websites.
TECHNICAL DETAILS
116,224 bytes
PE
Aspack
Yes
26 Oct 2009
Arrival Details
This Trojan may be dropped by other malware.
It may be unknowingly downloaded by a user while visiting malicious websites.
Installation
This Trojan drops the following copies of itself into the affected system:
- %User Temp%\xvassdf.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, XP, and Server 2003.)
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
CurrentVersion\Run
54dfsger = "%User Temp%\xvassdf.exe"
Dropping Routine
This Trojan drops the following files:
- %User Temp%\4tddfwq0.dll - detected as TSPY_GAMETHI.AM
(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.)
SOLUTION
8.900
6.958.05
29 Mar 2010
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
Remove malware files dropped/downloaded by TROJ_GAMETHI.GGU
- TSPY_GAMETHI.AM
Step 3
Restart in Safe Mode
Step 4
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_CURRENT_USER\Software\Microsoft\CurrentVersion\Run
- 54dfsger=%User Temp%\xvassdf.exe
- 54dfsger=%User Temp%\xvassdf.exe
Step 5
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_GAMETHI.GGU. 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.
Did this description help? Tell us how we did.