VBS.DLetter@mm

Risk Level 1: Very Low

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Discovered:: February 18, 2003
Updated:: February 13, 2007 11:43:14 AM
Type:: Worm
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP

VBS.DLetter@mm is a worm written in Visual Basic Script. When executed, the worm attempts to send itself to all the recipients in the Microsoft Outlook address book. The email will have a subject which is randomly chosen from a predetermined list and an attachment with a .mht file extension.

VBS.DLetter@mm also spreads using the IRC, mIRC, and KaZaA-shared folders.

Antivirus Protection Dates

Initial Rapid Release version February 19, 2003
Latest Rapid Release version September 28, 2010 revision 054
Initial Daily Certified version February 19, 2003
Latest Daily Certified version September 28, 2010 revision 036
Initial Weekly Certified release date February 19, 2003

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

Threat Assessment

Wild

Wild Level: Low
Number of Infections: 0 - 49
Number of Sites: 0 - 2
Geographical Distribution: Low
Threat Containment: Easy
Removal: Moderate

Damage

Damage Level: Low

Distribution

Distribution Level: High

Writeup By: Jason Pan

Technical Details

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Internet Security Threat Report, Volume 16