W32.Mapson.Worm

Risk Level 2: Low

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Discovered:: June 6, 2003
Updated:: February 13, 2007 12:02:27 PM
Also Known As:: W32/Mapson@MM [McAfee], W32/Mapson-A [Sophos], WORM_MAPSON.A [Trend], Win32.Mapson.A [CA], I-Worm.Mapson [KAV]
Type:: Worm
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP

W32.Mapson.Worm sends itself to all the contacts in the MSN messenger contact list. The Subject line, Message body, and attachment vary. The attachment will have a .com, .exe, or .pif file extension. Also, the email may have spoofed the From field.

This worm also attempts to spread itself through the KaZaA, KaZaA Lite, eDonkey2000, Gnucleus, Limewire, Morpheus, Grokster file-sharing networks and ICQ.

If the current system month is July, the worm will display messages with the title "Lorraine Worm [GEDZAC LABS 2003]."

W32.Mapson.Worm is written in the Borland Delphi programming language and is compressed with UPX.

Antivirus Protection Dates

Initial Rapid Release version June 7, 2003
Latest Rapid Release version September 28, 2010 revision 054
Initial Daily Certified version June 7, 2003
Latest Daily Certified version September 28, 2010 revision 036
Initial Weekly Certified release date June 7, 2003

Click for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment

Wild

Wild Level: Medium
Number of Infections: More than 1000
Number of Sites: More than 10
Geographical Distribution: Medium
Threat Containment: Easy
Removal: Moderate

Damage

Damage Level: Low

Distribution

Distribution Level: High

Writeup By: Yana Liu

Technical Details

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Internet Security Threat Report, Volume 16