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Date discovered:09/11/2009
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low
Static file:Yes
File size:69.632 Bytes
MD5 checksum:505991ed002c1af87937e69aefa7c2ff
IVDF version: - Monday, November 9, 2009

 General Aliases:
   •  Mcafee: W32/Koobface.worm.gen.q
   •  Sophos: Mal/Generic-A
   •  Panda: W32/Koobface.GF.worm
   •  Eset: Win32/Koobface.NCK
   •  Bitdefender: Worm.Generic.97084

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 location:
   • %WINDIR%\sber18.exe

It deletes the initially executed copy of itself.

It deletes the following files:
   • C:\vx\sd.dat
   • %WINDIR%\dxxdv34567.bat
   • c:\3.reg

The following files are created:

– c:\3.reg This is a non malicious text file with the following content:
   • %code that runs malware%

%malware execution directory%\sd.dat
%WINDIR%\dxxdv34567.bat This batch file is used to delete a file.
%WINDIR%\bx4657.dat Furthermore it gets executed after it was fully created.

It tries to download a file:

– The locations are the following:
   • http://krocketklubben1972.dk/**********/?action=begen&v=18
   • http://name.filipinaprincess.com/**********/?action=begen&v=18
   • http://cmpmiami.com/**********/?action=begen&v=18
   • http://brentsmusic.com/**********/?action=begen&v=18
   • http://www.intelsourcepvt.com/**********/?action=begen&v=18
   • http://genesiskdmparts.com/**********/?action=begen&v=18
   • http://www.ecole-de-boucq.org/**********/?action=begen&v=18
   • http://billig-bauer.de/**********/?action=begen&v=18
   • http://videoleverage.com/**********/?action=begen&v=18
   • http://gospel-force.com/**********/?action=begen&v=18
   • http://zu.ktk.ru/**********/?action=begen&v=18

 Registry The following registry key is added:

– [HKCR\Mime\Database\Content Type\application/xhtml+xml]
   • "CLSID"="{25336920-03F9-11cf-8FD0-00AA00686F13}"
   • "Encoding"=hex:08,00,00,00
   • "Extension"=".xml"

 Miscellaneous  Checks for an internet connection by contacting the following web site:
   • http://www.google.com

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

Descripción insertada por Petre Galan el martes 16 de marzo de 2010
Descripción actualizada por Petre Galan el miércoles 17 de marzo de 2010

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