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- Discovered:
- October 7, 2003
- Updated:
- February 13, 2007 12:12:15 PM
- Type:
- Worm
- Systems Affected:
- Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP
W32.Napsin@mm is a mass-mailing worm that uses Microsoft Outlook to send itself to all the contacts in the Outlook address book. The email has the following characteristics:
Subject: There you go, take a look
Attachment: Sinapps.exe
This threat is written in the Microsoft Visual Basic programming language and is compressed with UPX.
Antivirus Protection Dates
- Initial Rapid Release version October 8, 2003
- Latest Rapid Release version September 28, 2010 revision 054
- Initial Daily Certified version October 8, 2003
- Latest Daily Certified version September 28, 2010 revision 036
- Initial Weekly Certified release date October 8, 2003
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Yana Liu
