TSPY_GAMETHI.DZK
PWS:Win32/OnLineGames.ZY, TrojanDropper:Win32/Comotor.A (Microsoft); [00004060.EXE]:PWS-OnlineGames.fd (McAfee); Infostealer.Onlinegame (Symantec); Trojan-Dropper.Win32.Small.cwc (Kaspersky); Trojan-PWS.Win32.OnLineGames.zy (v) (Sunbelt); Trojan horse Dropper.Generic3.BHOK (AVG)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Spyware
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It deletes itself after execution.
TECHNICAL DETAILS
Arrival Details
This spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Other System Modifications
This spyware adds the following registry keys:
HKEY_CLASSES_ROOT\Wd3.wd3atl.1
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wd3.wd3atl.1\CLSID
HKEY_CLASSES_ROOT\Wd3.wd3atl
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wd3.wd3atl\CLSID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Wd3.wd3atl\CurVer
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{2EEEDBE8-79F4-4CAE-B6D9-2E63A7B680FA}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{2EEEDBE8-79F4-4CAE-B6D9-2E63A7B680FA}\ProgID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{2EEEDBE8-79F4-4CAE-B6D9-2E63A7B680FA}\VersionIndependentProgID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{2EEEDBE8-79F4-4CAE-B6D9-2E63A7B680FA}\Programmable
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{2EEEDBE8-79F4-4CAE-B6D9-2E63A7B680FA}\InprocServer32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{2EEEDBE8-79F4-4CAE-B6D9-2E63A7B680FA}\TypeLib
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{B7B8EFDA-919F-4A23-A9D7-0F9274B8047C}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{B7B8EFDA-919F-4A23-A9D7-0F9274B8047C}\1.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{B7B8EFDA-919F-4A23-A9D7-0F9274B8047C}\1.0\
FLAGS
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{B7B8EFDA-919F-4A23-A9D7-0F9274B8047C}\1.0\
0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{B7B8EFDA-919F-4A23-A9D7-0F9274B8047C}\1.0\
0\win32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{B7B8EFDA-919F-4A23-A9D7-0F9274B8047C}\1.0\
HELPDIR
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{6C4D911D-6850-479F-B378-98C09FE23642}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{6C4D911D-6850-479F-B378-98C09FE23642}\ProxyStubClsid
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{6C4D911D-6850-479F-B378-98C09FE23642}\ProxyStubClsid32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{6C4D911D-6850-479F-B378-98C09FE23642}\TypeLib
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\ShellServiceObjectDelayLoad
%Windows%\Fonts\uazhufnv.dll = "{2EEEDBE8-79F4-4CAE-B6D9-2E63A7B680FA}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{2EEEDBE8-79F4-4CAE-B6D9-2E63A7B680FA}\InprocServer32
ThreadingModel = "Apartment"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{6C4D911D-6850-479F-B378-98C09FE23642}\TypeLib
Version = "1.0"
Dropping Routine
This spyware drops the following files:
- %Windows%\Fonts\uazhufnv.tmp
(Note: %Windows% is the Windows folder, which is usually C:\Windows.)
Other Details
This spyware deletes itself after execution.
This report is generated via an automated analysis system.
SOLUTION
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
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_CLASSES_ROOT
- Wd3.wd3atl.1
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wd3.wd3atl.1
- CLSID
- In HKEY_CLASSES_ROOT
- Wd3.wd3atl
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wd3.wd3atl
- CLSID
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wd3.wd3atl
- CurVer
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
- {2EEEDBE8-79F4-4CAE-B6D9-2E63A7B680FA}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{2EEEDBE8-79F4-4CAE-B6D9-2E63A7B680FA}
- ProgID
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{2EEEDBE8-79F4-4CAE-B6D9-2E63A7B680FA}
- VersionIndependentProgID
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{2EEEDBE8-79F4-4CAE-B6D9-2E63A7B680FA}
- Programmable
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{2EEEDBE8-79F4-4CAE-B6D9-2E63A7B680FA}
- InprocServer32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{2EEEDBE8-79F4-4CAE-B6D9-2E63A7B680FA}
- TypeLib
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
- {B7B8EFDA-919F-4A23-A9D7-0F9274B8047C}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{B7B8EFDA-919F-4A23-A9D7-0F9274B8047C}
- 1.0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{B7B8EFDA-919F-4A23-A9D7-0F9274B8047C}\1.0
- FLAGS
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{B7B8EFDA-919F-4A23-A9D7-0F9274B8047C}\1.0
- 0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{B7B8EFDA-919F-4A23-A9D7-0F9274B8047C}\1.0\0
- win32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{B7B8EFDA-919F-4A23-A9D7-0F9274B8047C}\1.0
- HELPDIR
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
- {6C4D911D-6850-479F-B378-98C09FE23642}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{6C4D911D-6850-479F-B378-98C09FE23642}
- ProxyStubClsid
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{6C4D911D-6850-479F-B378-98C09FE23642}
- ProxyStubClsid32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{6C4D911D-6850-479F-B378-98C09FE23642}
- TypeLib
Step 3
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\ShellServiceObjectDelayLoad
- %Windows%\Fonts\uazhufnv.dll = "{2EEEDBE8-79F4-4CAE-B6D9-2E63A7B680FA}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{2EEEDBE8-79F4-4CAE-B6D9-2E63A7B680FA}\InprocServer32
- ThreadingModel = "Apartment"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{6C4D911D-6850-479F-B378-98C09FE23642}\TypeLib
- Version = "1.0"
Step 4
Search and delete this file
- %Windows%\Fonts\uazhufnv.tmp
Step 5
Scan your computer with your Trend Micro product to delete files detected as TSPY_GAMETHI.DZK. 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.
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