VBS.Lisa.A@mm

VBS.Lisa.A@mm is a mass-mailing worm that is written in the Visual Basic Scripting (VBS) language. This worm attempts to spread through Microsoft Outlook, mIRC, and KaZaA. The email arrives with a subject of "Click YES and vote against war!". There is no mail attachment as the worm is distributed as script in the body of the email.

VBS.Lisa.A@mm may create up to 5,000 folders on the C drive and may delete critical system files. On Windows 95/98/Me computers, the worm may format the C drive.

NOTE: Virus definitions dated prior to February 26, 2003 may detect this as Bloodhound.VBS.Worm.

Protection

• Initial Rapid Release version February 26, 2003
• Latest Rapid Release version July 12, 2008 revision 018
• Initial Daily Certified version February 26, 2003
• Latest Daily Certified version July 12, 2008 revision 019
• Initial Weekly Certified release date February 26, 2003

Click here 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: High

Distribution

• Distribution Level: High