Discovered: April 28, 2003
Updated: February 13, 2007 12:00:37 PM
Also Known As: W32/Lovelorn@MM [McAfee], WORM_LOVELORN.A [Trend], Win32.Lovelorn.A [CA], I-Worm.Lovelorn [KAV], W32/Cailont-A [Sophos]
Type: Worm, Virus
Systems Affected: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP
W32.Nolor@mm is a mass-mailing worm that uses its own SMTP engine to spread itself. The email will have a variable subject line and an attachment with the filename, *.Kiss.ok.exe or *.htm.
W32.Nolor@mm is also a file infector that encrypts the host file, and then prepends itself to the host file.
This threat is written in the Borland C++ programming language.
Protection
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Initial Rapid Release version April 28, 2003
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Latest Rapid Release version October 7, 2009 revision 034
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Initial Daily Certified version April 28, 2003
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Latest Daily Certified version October 12, 2009 revision 002
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Initial Weekly Certified release date April 30, 2003
Click for a more detailed description of Rapid Release and Daily Certified virus definitions.
Threat Assessment
Wild
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Wild Level: Low
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Number of Infections: More than 1000
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Number of Sites: More than 10
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Geographical Distribution: Medium
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Threat Containment: Easy
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Removal: Moderate
Damage
Distribution
Writeup By: Kaoru Hayashi