- Discovered:
- June 4, 2003
- Updated:
- February 13, 2007 12:02:02 PM
- Also Known As:
- VBS.Zuoning [KAV], VBS/Trads [McAfee]
- Type:
- Trojan Horse, Worm
- Systems Affected:
- Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP
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



