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Virus:TR/Killav.NJ
Date discovered:19/01/2009
Type:Trojan
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low to medium
Damage Potential:Low to medium
Static file:Yes
File size:174.592 Bytes
MD5 checksum:4beca2b8788ef210bfe35bd70f6ab4ac
VDF version:7.01.01.131
IVDF version:7.01.01.140 - Monday, January 19, 2009

 General Method of propagation:
   • Autorun feature


Aliases:
   •  Kaspersky: Trojan-GameThief.Win32.Magania.dxii
   •  TrendMicro: TROJ_GAMETHI.GQX
   •  Sophos: Troj/PWS-BOS
   •  Avast: Win32:OnLineGames-FVA


Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003
   • Windows Vista
   • Windows 7


Side effects:
   • Drops files
   • Registry modification

 Files It copies itself to the following locations:
   • %TEMPDIR%\apiqq.exe
   • %drive%\io3yalc.exe



It deletes the initially executed copy of itself.



The following file is created:

%drive%\autorun.inf This is a non malicious text file with the following content:
   • %code that runs malware%




It tries to download some files:

– The location is the following:
   • http://www.baidutvc.com/1mg/**********
It is saved on the local hard drive under: %SYSDIR%\arking.exe Further investigation pointed out that this file is malware, too.

– The location is the following:
   • http://www.baidutvc.com/1mg/**********
It is saved on the local hard drive under: %SYSDIR%\arking0.dll Further investigation pointed out that this file is malware, too.

– The location is the following:
   • http://www.baiduop0.com/1mg/**********
It is saved on the local hard drive under: %TEMPDIR%\apiqq0.dll Further investigation pointed out that this file is malware, too.

 Registry To each registry key one of the values is added in order to run the processes after reboot:

–  [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "api32"="%TEMPDIR%\apiqq.exe"

–  [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "King_ar"="%SYSDIR%\arking.exe"



The following registry keys are changed:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
   New value:
   • "Hidden"=dword:00000002

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
   New value:
   • "ShowSuperHidden"=dword:00000000

 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:
   • ASPack

Description inserted by Andrei Ilie on Thursday, April 21, 2011
Description updated by Andrei Ilie on Tuesday, May 24, 2011

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