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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Encyclopedia GetVirusCard True 0

Class.ED

 
Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Class.ED
Technical name:W97M/Class.ED
Threat level:Low
Type:Virus
Effects:  It infects Word document containing macros and displays a message on screen.

Affected platforms:

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

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

Brief Description 

    

Class.ED is a macro virus that infects Word 97 files, as well as the NORMAL.DOT global template used by this application.

In order to carry out its infection, Class.ED infects the NORMAL.DOT template. By doing this, all the documents that are used on the infected computer (all of them will use this template by default) will also become infected.

In addition, Class.ED is also a polymorphic virus, so it is more difficult to detect than other macro viruses.

Visible Symptoms 

    

Class.ED is very easy to identify, as it disables some Word options, such as the options for defining, modifying and creating macros and the Visual Basic editor.

If the user of the affected computer tries to access any of these two options, through the Word menu or through shortcut keys, Class.ED displays a message on screen: