O97M.Tristate

Risk Level 1: Very Low

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Discovered:: February 18, 1999
Updated:: February 13, 2007 11:47:53 AM
Also Known As:: O97M.Tristate.A, O97M.Tristate.B, O97M.Tristate.C, Macro.Office.Triplicate.C, O97M.Triplicate.C
Type:: Worm

O97M.Tristate is a Microsoft Office 97 macro virus that has been found in-the-wild. The Symantec AntiVirus Research Center has recently received reports of O97M.Tristate infection through the Scan & Deliver system. The differences among the A, B, and C variants are minor changes to the comments in the macro code.

Antivirus Protection Dates

Initial Rapid Release version February 22, 1999
Latest Rapid Release version February 22, 1999
Initial Daily Certified version February 22, 1999
Latest Daily Certified version February 22, 1999
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: Medium
Number of Infections: 50 - 999
Number of Sites: 3 - 9
Geographical Distribution: Medium
Threat Containment: Easy
Removal: Moderate

Damage

Damage Level: Low

Distribution

Distribution Level: Low

Writeup By: Douglas Knowles

Technical Details

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Internet Security Threat Report, Volume 16