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  3. W32.Wergimog.B


Risk Level 1: Very Low

May 16, 2012
May 18, 2012 1:55:57 AM
Infection Length:
94,208 bytes
Systems Affected:
Windows 2000, Windows 7, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows Server 2008, Windows Vista, Windows XP
W32.Wergimog.B is a worm that attempts to spread through removable drives. It also opens a back door and may steal information from the compromised computer.

Antivirus Protection Dates

  • Initial Rapid Release version May 16, 2012 revision 034
  • Latest Rapid Release version August 22, 2014 revision 008
  • Initial Daily Certified version May 17, 2012 revision 005
  • Latest Daily Certified version August 23, 2014 revision 001
  • Initial Weekly Certified release date May 23, 2012
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment


  • Wild Level: Medium
  • Number of Infections: 0 - 49
  • Number of Sites: 0 - 2
  • Geographical Distribution: Low
  • Threat Containment: Easy
  • Removal: Easy


  • Damage Level: Medium
  • Payload: Opens a back door.
  • Releases Confidential Info: Steals information related to FileZilla.


  • Distribution Level: High
Note: On May 14, 2015, modifications will be made to the threat write-ups to streamline the content. The Threat Assessment section will no longer be published as this section is no longer relevant to today's threat landscape. The Risk Level will continue to be the main threat risk assessment indicator.
Writeup By: Takashi Katsuki

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