Threat Description



Category: Malware
Type: Virus
Platform: W97M
Aliases: Mimir, Mimir.A


W97M/Mimir.A is an overwriting Word 97 macro virus with a mass mailing ability.


Automatic action

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

More scanning & removal options

More information on scanning or removal options is available in the documentation for your F-Secure security product on the Downloads section of our Home - Global site.

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

Contact Support

For further assistance, F-Secure customers can request support online via the Request support or the Chat forms on our Home - Global site.

Technical Details

When an infected document is opened, the virus will change the title of the Word's window to:

    MiMiR is giving your computer new intelligence!  

Then the virus ovewrites the three recently used documents as well as every file with ".doc" extension in the "C:" drive with the active document.

Finally it attempts to use Outlook to send a message to the every person listed in the "Contacts" folder. The body of these messages contains the following text:

    Some nice jokes you got to read!! :))  

The active document is attached to the message as well.

Technical Details:Sami Rautiainen, F-Secure


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