Virus:TR/Drop.Agent.biqk
Date discovered:29/11/2009
Type:Trojan
Subtype:Dropper
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:47.104 Bytes
MD5 checksum:df8e227f797340574a708e91064c2161
IVDF version:7.10.01.118 - Sunday, November 29, 2009

 General Aliases:
   •  Mcafee: W32/Koobface.worm.gen.r
   •  Sophos: Mal/Generic-A
   •  Panda: W32/Koobface.HU.worm
   •  Eset: Win32/Koobface.NCK
   •  Bitdefender: Trojan.Generic.2862564


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%\tag14.exe



It deletes the initially executed copy of itself.



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



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 Furthermore it gets executed after it was fully created. This batch file is used to delete a file.
– %WINDIR%\tgm2.dat



It tries to download a file:

– The locations are the following:
   • http://www.ho-fashion.com/**********/?action=tggen&v=14
   • http://starart.net/**********/?action=tggen&v=14
   • http://static.e-lady.pl/**********/?action=tggen&v=14
   • http://fredericia-stavgang.dk/**********/?action=tggen&v=14
   • http://daveshieldsmedia.com/**********/?action=tggen&v=14
   • http://www.electronicstoday.org/**********/?action=tggen&v=14
   • http://s247135758.onlinehome.us/**********/?action=tggen&v=14
   • http://www.lott-gaylor.com/**********/?action=tggen&v=14
   • http://iek-triandr.thess.sch.gr/**********/?action=tggen&v=14
   • http://prostruction.net/**********/?action=tggen&v=14
   • http://videoleverage.com/**********/?action=tggen&v=14
   • http://matthall.com.au/**********/?action=tggen&v=14
   • http://eurorot.com/**********/?action=tggen&v=14
   • http://www.microscoop.net/**********/?action=tggen&v=14
   • http://www.creatingordernow.com/**********/?action=tggen&v=14
   • http://www.thedeathsquadmovement.com/**********/?action=tggen&v=14
   • http://kingdom-shakers.com/**********/?action=tggen&v=14
   • http://devline.se/**********/?action=tggen&v=14
   • http://anlaegkp.dk/**********/?action=tggen&v=14
   • http://thyselius.tv/**********/?action=tggen&v=14
   • http://www.redcode.rs/**********/?action=tggen&v=14
   • http://juanfurlan.com.ar/**********/?action=tggen&v=14
   • http://panoramapics.com/**********/?action=tggen&v=14
   • http://zaferburo.com.tr/**********/?action=tggen&v=14
   • http://sindhpk.com/**********/?action=tggen&v=14
   • http://vostravauxcleenmain.com/**********/?action=tggen&v=14
   • http://onestopfloorshop.com/**********/?action=tggen&v=14
   • http://www.gwypg.co.uk/**********/?action=tggen&v=14

 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.

Description inserted by Petre Galan on Wednesday, March 17, 2010
Description updated by Petre Galan on Wednesday, March 17, 2010

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