W97M.Invert.B

Risk Level 2: Low

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Discovered:: January 12, 2001
Updated:: February 13, 2007 11:51:11 AM
Type:: Virus

This is a macro virus that infects Microsoft Word templates, documents, Win.com, and other files in the \Windows and \Windows\System folders. This virus uses an algorithm to generate a series of payloads. It infects different files in different folders, depending on the date of the month.

Antivirus Protection Dates

Initial Rapid Release version January 12, 2001
Latest Rapid Release version January 12, 2001
Initial Daily Certified version January 12, 2001
Latest Daily Certified version January 12, 2001
Initial Weekly Certified release date pending

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

Threat Assessment

Wild

Wild Level: Low
Number of Infections: 50 - 999
Number of Sites: 3 - 9
Geographical Distribution: Low
Threat Containment: Moderate
Removal: Moderate

Damage

Damage Level: High

Distribution

Distribution Level: Low

Writeup By: JP Duan

Technical Details

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Internet Security Threat Report, Volume 16