Threat Description



Category: Malware
Type: Virus
Platform: W97M
Aliases: Rendra, Chiao


W97M/Rendra is 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.

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, W97M/Rendra.A disables the macro virus protection and infects the global template.

After that every document that is closed will be infected.

When a new document is created, the virus inserts the following large green text to it:

  Microsoft vous souhaite la bienvenue !!!  

The virus also adds the following green text to the active document when it is closed:


Further, the virus shows a message box with the following text after September, 15th:

  Merci d'avoir utilis ce bel outil qu'est M.S.WORDS !!!     Bill GATES vous le rendra  

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


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