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  3. W32.Ackantta.B@mm


Risk Level 2: Low

February 25, 2009
March 4, 2009 7:46:58 PM
Also Known As:
W32/Xirtem@MM!8b1f20b9 [McAfee]
Infection Length:
266, 240 bytes
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows Vista, Windows XP
W32.Ackantta.B@mm is a mass-mailing worm that gathers email addresses from the compromised computer and spreads by copying itself to removable drives and shared folders.

Note: As of February 25, 2009, Symantec began observing an increase in the number of Trojan.Vundo infections as a direct result of W32.Ackantta.B@mm.

For more information, please see the following resources:

Antivirus Protection Dates

  • Initial Rapid Release version February 25, 2009 revision 036
  • Latest Rapid Release version February 19, 2013 revision 016
  • Initial Daily Certified version February 25, 2009 revision 039
  • Latest Daily Certified version May 6, 2011 revision 021
  • Initial Weekly Certified release date March 4, 2009
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Jeong Mun

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