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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Encyclopedia GetVirusCard True 0

Class.BV

 
Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Class.BV
Technical name:W97M/Class.BV
Threat level:Low
Type:Virus
Effects:  It disables some Word options and, sometimes 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.BV is a macro virus that infects Word 97 files as well as the global template NORMAL.DOT used by this application.

Once infection has been carried out, Class.BV disables some Word options, such as access to the macro editor or to the Visual Basic editor. It sometimes displays a message on screen.

Visible Symptoms 

    

Class.BV is easy to identify, as on June, July, August, September, October, November and December 14, it displays a message on the screen every time an infected Word file is opened or closed.

In addition, Class.BV prevents the user from accessing certain Word options, such as:

  • The option for editing and creating macros (Tools-Macro-Macros).
  • Visual Basic editor (Tools-Macro-Visual Basic Editor).

It also prevents the access to these options using the following key combinations: Alt+F8 and Alt+F11.