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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Encyclopedia GetVirusCard True 0

Class.O3

 
Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Class.O3
Technical name:W97M/Class.O3
Threat level:Low
Type:Virus
Effects:  It infects Word documents with macros.

Affected platforms:

Windows 2003/XP/2000/NT/ME/98/95

Detection updated on:Nov. 13, 2002
StatisticsNo
Family:VALENTIN

Brief Description 

    

Class.O3 is a macro virus that infects Word files and the NORMAL.DOT global template used by this application.

In order to carry out its infection, Class.O3 infects the NORMAL.DOT global template. By doing this, all the Word documents used on the infected computer, which use this template, will also be infected.

Note: The 'O' that appears before the 3 is not the number zero but the letter O.

Visible Symptoms 

    

Class.O3 is difficult to recognize as it does not display any warnings or messages that indicate that it has infected a computer.