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Virus:Worm/Bezopi.DV
Date discovered:16/09/2009
Type:Worm
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low to medium
Damage Potential:Low to medium
Static file:Yes
File size:33.280 Bytes
MD5 checksum:fabb59365e6a652ed881f3b38d477ca8
IVDF version:7.01.06.02 - Wednesday, September 16, 2009

 General Method of propagation:
• Autorun feature


Aliases:
   •  Mcafee: W32/Bezopi
   •  Eset: Win32/AutoRun.FakeAlert.AF
   •  Bitdefender: Trojan.FakeAlert.BRE


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:
   • %PROGRAM FILES%\Microsoft Common\svchost.exe
   • %drive%\autorun.exe



It deletes the initially executed copy of itself.



The following file is created:

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




It tries to download a file:

– The location is the following:
   • http://popupserf.cn/1/**********?v=1&rs=%UUID%&n=1&uid=1
At the time of writing this file was not online for further investigation.

 Registry The following registry key is added:

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\explorer.exe]
   • "Debugger"="%PROGRAM FILES%\Microsoft Common\svchost.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 Thursday, February 4, 2010
Description updated by Petre Galan on Friday, February 5, 2010

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