Virus:TR/PSW.OnLin.aklo.2
Date discovered:14/07/2008
Type:Trojan
In the wild:No
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low to medium
Static file:No
IVDF version:7.00.05.107 - Monday, July 14, 2008

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  F-Secure: Trojan-GameThief.Win32.OnLineGames.shhz
   •  Grisoft: PSW.OnlineGames.AXGS
   •  Bitdefender: Trojan.PWS.OnlineGames.ZAY


Platforms / OS:
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003


Side effects:
   • Drops a malicious file
   • Registry modification
   • Steals information

 Files It copies itself to the following location:
   • %SYSDIR%\tmdkcok.exe



It deletes the initially executed copy of itself.



The following file is created:

– %SYSDIR%\tmdkco.dll Further investigation pointed out that this file is malware, too. Detected as: TR/PSW.OnLin.aklo.2

 Registry The following registry key is changed:

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows]
   New value:
   • AppInit_DLLs = tmdkco.dll

 Stealing It tries to steal the following information:

– The password from the following program:
   • %chinese text%

 File details Programming language:
 The malware program was written in MS Visual C++.


Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with the following runtime packer:
   • UPX

Description inserted by Andrei Gherman on Friday, July 25, 2008
Description updated by Andrei Gherman on Friday, July 25, 2008

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