Virus:TR/VB.Agent.16898
Date discovered:03/11/2009
Type:Trojan
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low
Static file:Yes
File size:16.896 Bytes
MD5 checksum:badb59a3b053c146b50146436c422414
IVDF version:7.01.06.185 - Tuesday, November 3, 2009

 General Method of propagation:
   • Autorun feature


Aliases:
   •  Sophos: Mal/Emogen-E
   •  Panda: Trj/Downloader.VTS
   •  Eset: Win32/TrojanDownloader.VB.ANF
   •  Bitdefender: Trojan.Downloader.VB.WBS


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


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

 Files It copies itself to the following locations:
   • %SYSDIR%\ODBCJET.exe
   • %drive%\Cn911.exe



It deletes the following file:
   • %SYSDIR%\Del.bat



The following files are created:

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

– %SYSDIR%\Del.bat Furthermore it gets executed after it was fully created. This batch file is used to delete a file.



It tries to download a file:

– The location is the following:
   • http://eaglemg.com/album/13/js/1/**********
At the time of writing this file was not online for further investigation.

 Registry The following registry key is changed:

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
   New value:
   • "Userinit"="%SYSDIR%\userinit.exe,%SYSDIR%\ODBCJET.exe,"

 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 Wednesday, March 3, 2010
Description updated by Petre Galan on Wednesday, March 3, 2010

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