Virus:TR/PSW.Magania.aul
Date discovered:06/02/2009
Type:Application
In the wild:Yes
Reported Infections:Medium
Distribution Potential:Medium
Damage Potential:Medium
Static file:Yes
File size:106.952 Bytes
MD5 checksum:26ed45d881869e9543441442e001e3cb
IVDF version:7.01.01.239 - Friday, February 6, 2009

 General Aliases:
   •  Symantec: Infostealer.Gampass
   •  Mcafee: Generic PWS.ak trojan !!!
   •  Kaspersky: Trojan-Dropper.Win32.Agent.ahyp
   •  Sophos: Troj/Agent-JBE
   •  Panda: W32/Lineage.KYR
   •  Eset: Win32/PSW.OnLineGames.NMY
   •  Bitdefender: Trojan.PWS.OnlineGames.KBPP


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


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

 Files It copies itself to the following locations:
   • %drive%\gxul.com
   • %SYSDIR%\uret463.exe



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



It deletes the initially executed copy of itself.



It deletes the following 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%\lhgjyit0.dll (129536) Furthermore it gets executed after it was fully created. Further investigation pointed out that this file is malware, too. Detected as: TR/Dldr.Krap.399349




It tries to download some files:

– The location is the following:
   • http://dsews.com/xjj/**********
Further investigation pointed out that this file is malware, too.

– The location is the following:
   • http://iytgfvcxs.com/xjj/**********

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

– [HKLM\SYSTEM\CurrentControlSet\Services\AVPsys]
   • "Start"=dword:0x3
   • "Type"=dword:0x1
   • "ImagePath"="\??\%SYSDIR%\drivers\cdaudio.sys"
   • "DisplayName"="AVPsys"
   • "ErrorControl"=dword:0x1



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 key is added:

– [HKLM\SOFTWARE\Classes\CLSID\MADOWN]
   • "urlinfo"="eftsdr.h"



The following registry keys are changed:

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\
   Folder\Hidden\SHOWALL]
   New value:
   • "CheckedValue"=dword:0x0

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
   New value:
   • "Hidden"=dword:0x2
   • "ShowSuperHidden"=dword:0x0

 Injection –  It injects the following file into a process: %SYSDIR%\lhgjyit0.dll

    Process name:
   • %all running processes%


 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 Monday, October 19, 2009
Description updated by Petre Galan on Monday, October 19, 2009

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