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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Encyclopedia GetVirusCard True 0

Klez@mm

 
Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Klez@mm
Technical name:W32/klez@mm
Threat level:Low
Type:Virus
Effects:  It infects the computer when the message is viewed through Outlook’s Preview Pane. It prevents the user from using the Windows Start button and the correct functioning of some programs.

Affected platforms:

MS-DOS

Detection updated on:Sept. 19, 2007
StatisticsNo

Brief Description 

    

Klez@mm is a worm that reaches computers in a file attached to an e-mail message with a variable subject.

It is very easy to become infected by Klez@mm, as it is automatically activated when the message carrying this worm is viewed through Outlook’s Preview Pane.

Klez@mm is dangerous because:

  • It automatically and rapidly spreads to all the contacts in Outlook’s Address Book.
  • It prevents the user from using the Windows Start button and the correct functioning of some programs.

Visible Symptoms 

    

Klez@mm is difficult to recognize, as it is hidden in e-mail messages with variable characteristics.