TROJ_GAMETHI.GST
Windows 2000, XP, Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
BLOCKED:
http://www.googleccf.com/1mg/am1.rar
http://www.163lou.com/1mg/am.rar
This Trojan may arrive bundled with malware packages as a malware component. It may arrive as a file that exports functions used by other malware. It may be dropped by other malware. It may be dropped by other malware.
It requires its main component to successfully perform its intended routine.
TECHNICAL DETAILS
86,016 bytes
DLL
Yes
11 Nov 2009
Connects to URLs/Ips
Arrival Details
This Trojan may arrive bundled with malware packages as a malware component.
It may arrive as a file that exports functions used by other malware.
It may be dropped by other malware.
It may be dropped by the following malware:
- WORM_AUTORUN.ZZS
Installation
This Trojan stays memory-resident by injecting codes into the following processes:
- IExplore.exe
Other System Modifications
This Trojan modifies the following registry entries to hide files with Hidden attributes:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Advanced
Hidden = 2
(Note: The default value data of the said registry entry is 1.)
HKEY_CURRENT_USER\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Advanced
ShowSuperHidden = 0
(Note: The default value data of the said registry entry is 1.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Advanced\Folder\Hidden\
SHOWALL
CheckedValue = 0
(Note: The default value data of the said registry entry is 1.)
Other Details
This Trojan connects to the following possibly malicious URL:
- http://www.{BLOCKED}eccf.com/1mg/am1.rar
- http://www.{BLOCKED}u.com/1mg/am.rar
It requires its main component to successfully perform its intended routine.
SOLUTION
8.900
6.620.01
11 Nov 2009
7.119.00
21 Apr 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 3
Scan your computer with your Trend Micro product to delete files detected as TROJ_GAMETHI.GST. 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 4
Restart in Safe Mode
Step 5
Restore this modified 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\Windows\CurrentVersion\Explorer\Advanced
- From: Hidden = 2
To: 1
- From: Hidden = 2
- In HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced
- From: ShowSuperHidden = 0
To: 1
- From: ShowSuperHidden = 0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL
- From: CheckedValue = 0
To: 1
- From: CheckedValue = 0
Step 6
Search and delete these files
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