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Virus:TR/PSW.Magania.ZU
Date discovered:17/06/2009
Type:Trojan
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low to medium
Damage Potential:Medium
Static file:Yes
File size:101.228 Bytes
MD5 checksum:941676156775f782c7490bef2a383c96
IVDF version:7.01.04.101 - Wednesday, June 17, 2009

 General Method of propagation:
   • Autorun feature


Aliases:
   •  Panda: W32/Lineage.KWA
   •  Eset: Win32/PSW.OnLineGames.NMY
   •  Bitdefender: Trojan.PWS.OnlineGames.KCME


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


Side effects:
   • Downloads a malicious file
   • Drops malicious files
   • Lowers security settings
   • Registry modification

 Files It copies itself to the following locations:
   • %drive%\0ohqxsdx.bat
   • %SYSDIR%\uret463.exe



It overwrites a file.
%SYSDIR%\drivers\cdaudio.sys



The following files are created:

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

%SYSDIR%\dllcache\cdaudio.sys
%SYSDIR%\lhgjyit0.dll Further investigation pointed out that this file is malware, too. Detected as: TR/PSW.Magania.zu.1




It tries to download a file:

– The location is the following:
   • http://xsderfgbn.com/xjj/**********
At the time of writing this file was not online for further investigation.

 Registry The following registry key is added in order to run the process after reboot:

– [HKLM\SYSTEM\CurrentControlSet\Services\AVPsys]
   • "DisplayName"="AVPsys"
   • "ErrorControl"=dword:0x00000001
   • "ImagePath"="\??\%SYSDIR%\drivers\cdaudio.sys"
   • "Start"=dword:0x00000003
   • "Type"=dword:0x00000001



One of the following values is added in order to run the process after reboot:

–  [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "dorfgwe"="%SYSDIR%\uret463.exe"



The following registry keys are changed:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
   New value:
   • "Hidden"=dword:0x00000002
   • "ShowSuperHidden"=dword:0x00000000

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\
   Folder\Hidden\SHOWALL]
   New value:
   • "CheckedValue"=dword:0x00000000

 File details Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

Description inserted by Petre Galan on Friday, March 5, 2010
Description updated by Petre Galan on Friday, March 5, 2010

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