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Virus:BDS/VB.ebc
Date discovered:13/06/2008
Type:Backdoor Server
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low to medium
Damage Potential:Low
Static file:Yes
File size:52.224 Bytes
MD5 checksum:0f6a0b74b7c3d1d5d5d8efa063e181c8
IVDF version:7.00.04.187 - Friday, June 13, 2008

 General Method of propagation:
    Autorun feature


Aliases:
   •  Mcafee: W32/Vbbot
   •  Sophos: W32/AutoRun-FD
   •  Panda: W32/SdBot.LXF
   •  Eset: Win32/AutoRun.PU
   •  Bitdefender: Trojan.Vb.Autorun.AA


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


Side effects:
   • Drops malicious files
   • Registry modification

 Files It copies itself to the following locations:
   • %HOME%\lsass.exe
   • %drive%\Start.exe



The following file is created:

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

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

  [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "LSA Shellu"="%HOME%\lsass.exe"



The following registry key is added:

[HKCU\Software\VB and VBA Program Settings\rn1\r]
   • "r"="r"

 Backdoor The following port is opened:

svchost.exe on TCP port 5000 in order to provide backdoor capabilities.

 Injection – It injects itself as a thread into a process.

    Process name:
   • 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, March 11, 2010
Description updated by Petre Galan on Friday, March 12, 2010

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