Virus:TR/OnlineG.118269.B
Date discovered:09/12/2008
Type:Trojan
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low to medium
Damage Potential:Low to medium
Static file:Yes
File size:118.269 Bytes
MD5 checksum:5979a4c8cc92f4a074b97be89539b927
IVDF version:7.01.00.208 - Tuesday, December 9, 2008

 General Method of propagation:
• Autorun feature


Aliases:
   •  Sophos: Mal/EncPk-CE
   •  Panda: W32/Lineage.JBP
   •  Eset: Win32/PSW.OnLineGames.NMY
   •  Bitdefender: Trojan.Generic.2291813


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:
   • %SYSDIR%\amvo.exe
   • %drive%\00hoeav.com



It overwrites a file.
%SYSDIR%\drivers\vga.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%\amvo0.dll Further investigation pointed out that this file is malware, too. Detected as: TR/Vundo.Gen

%SYSDIR%\optyhww0.dll Further investigation pointed out that this file is malware, too. Detected as: TR/Crypt.XPACK.Gen

%TEMPDIR%\ker1.tmp Further investigation pointed out that this file is malware, too. Detected as: TR/Drop.OnLi.123904

%TEMPDIR%\azqy.dll Further investigation pointed out that this file is malware, too. Detected as: TR/Crypt.ZPACK.Gen

%SYSDIR%\urretnd.exe Further investigation pointed out that this file is malware, too. Detected as: TR/Drop.Agent.ahdz

%drive%\d1vmq.exe Further investigation pointed out that this file is malware, too. Detected as: TR/Drop.Agent.ahdz




It tries to download some files:

– The location is the following:
   • http://vfgtyp.com/fm4/**********
Further investigation pointed out that this file is malware, too.

– The location is the following:
   • http://www.gdgft76.com/fm4/**********
Further investigation pointed out that this file is malware, too.

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

–  [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "amva"="%SYSDIR%\amvo.exe"
   • "cbvcs"="%SYSDIR%\urretnd.exe"



The following registry key is added:

– [HKLM\SOFTWARE\Classes\CLSID\MADOWN]
   • "urlinfo"="afvbgy.m"



The following registry keys are changed:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\
   Connections]
   New value:
   • "DefaultConnectionSettings"=hex:46,00,00,00,05,00,00,00,09,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,04,00,00,00,00,00,00,00,90,91,34,CA,C8,6D,CA,01,00,00,00,00,00,00,00,00,00,00,00,00,01,00,00,00,02,00,00,00,C0,A8,6B,64,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00

– [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 Tuesday, November 24, 2009
Description updated by Petre Galan on Wednesday, November 25, 2009

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