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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Encyclopedia GetVirusCard True 0

Nagem.B

 
Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Nagem.B
Technical name:W97M/Nagem.B
Threat level:Low
Type:Virus
Effects:  It closes the any currently open document, assigns a password to documents and shuts down the system.

Affected platforms:

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

Detection updated on:Nov. 12, 2001
StatisticsNo
Family:VALENTIN

Brief Description 

    

Nagem.B is a macro virus that reaches computers in an infected Word 97 document.

Its has destructive effects, seriously affecting the user’s work with Word:

  • It closes every currently open Word document and, under certain circumstances, shuts down the system.
  • It assigns a password to infected documents (if certain conditions are met).
  • It prevents access to the Macro option in the Tools menu.

Visible Symptoms 

    

Nagem.B shows different symptoms of infection depending on the system date stamp:

  • Word can ask for a password when the user tries to open a document infected by Nagem.B.
  • The virus closes every open Word document and shuts the system down.

If the user tries to access the Macro option in the Tools menu, Nagem.B displays the following message:

This Command is Unavailable this time