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.
Protection
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Initial Rapid Release version February 22, 1999
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Latest Rapid Release version February 22, 1999
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Initial Daily Certified version February 22, 1999
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Latest Daily Certified version February 22, 1999
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Initial Weekly Certified release date pending
Click for a more detailed description of Rapid Release and Daily Certified virus definitions.
Threat Assessment
Wild
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Wild Level: Medium
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Number of Infections: 50 - 999
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Number of Sites: 3 - 9
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Geographical Distribution: Medium
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Threat Containment: Easy
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Removal: Moderate
Damage
Distribution
Writeup By: Douglas Knowles