W97M.X3

Risk Level 1: Very Low

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Discovered:: February 21, 2003
Updated:: February 13, 2007 11:43:23 AM
Also Known As:: W97M.X3.a [Trend]
Type:: Macro
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP

W97M.X3 is a macro virus that infects Microsoft Word documents and the Normal.dot template. The virus also inserts and executes a destructive Trojan on your computer.

W97M.X3 attempts to overwrite the io.sys file, so that an infected computer will not be able to switch on after restart.

Antivirus Protection Dates

Initial Rapid Release version February 24, 2003
Latest Rapid Release version February 24, 2003
Initial Daily Certified version February 24, 2003
Latest Daily Certified version February 24, 2003
Initial Weekly Certified release date February 24, 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: Easy

Damage

Damage Level: Medium

Distribution

Distribution Level: Low

Writeup By: Robert X Wang

Technical Details

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Internet Security Threat Report, Volume 16