1. Symantec/
  2. Security Response/
  3. VBS.Zuoning@mm


June 4, 2003
February 13, 2007 12:02:02 PM
Also Known As:
VBS.Zuoning [KAV], VBS/Trads [McAfee]
Trojan Horse, Worm
Systems Affected:

VBS.Zuoning@mm is a Visual Basic Script (VBS) worm that attempts to mail itself to every contact in the Microsoft Outlook Address Book. The destructive payload is a command to reformat every disk the worm finds when the system is rebooted.

The only known variant does not attach itself to the email it sends, due to a bug. The subject line of the email is "RE : my passwd !please check".

Antivirus Protection Dates

  • Initial Rapid Release version June 5, 2003
  • Latest Rapid Release version August 20, 2008 revision 017
  • Initial Daily Certified version June 5, 2003
  • Latest Daily Certified version August 20, 2008 revision 016
  • Initial Weekly Certified release date June 5, 2003
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Heather Shannon

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