Threat Description



Aliases: Bablas
Category: Malware
Type: Virus
Platform: W97M


W97M/Bablas is a Word 97 macro virus.


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.


Detailed instructions for F-Secure security products are available in the documentation found in the Downloads section of our Home - Global site.

You may also refer to the Knowledge Base on the F-Secure Community site for further assistance.

Technical Details


When an infected document is opened, the virus infects the global template. While infecting, the virus changes the Word application window title bar to:

  Bpp Hacker is now activating  

and the active document window title bar to:

  (I Don't mean to disturb.)  

After infection is done, the virus restores the texts of title bars back to normal. The same behaviour is visible, when "File/Open" dialog is opened in the infected Word.

When the global template is infected, the virus infectes all documents that are opened, closed or saved.

The payload activates in any Friday and Sunday every time the Word is closed only if the current time is less than 9:00 pm. Then the virus causes computer to beep and displays a message:

  Terimakasih buat dosenku yang amat sangat "bijaksana",     yang telah memberiku nilai JELEK. Saya merasa bangga     dan sungguh-sungguh bangga terhadap dosenku itu.     Sekali lagi saya ucapkan terimakasih!.      Semoga mereka tetap di STIKI.     (buat teman-teman, ma'af mengganggu.)  

Technical Details:Katrin Tocheva and Sami Rautiainen, F-Secure


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