Threat Description



Category: Malware
Platform: W32
Aliases: Beliers


X97M/Beliers is a Excel 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 workbook is opened or closed, X97M/Beliers infects all currently opened workbooks. It also infects a random number of workbooks that it can find from the "C:\Mes Documents" directory. This is the "My Documents" directory in the French Windows. If such directory can't be found, it will infect documents in the current directory.

If the last two digits of the current year is 99, in some systems depending on the current locale settings, the virus will attempt to add a link to the Netscape Navigator bookmarks file and create an internet shortcut to the "Favoris" (Favorites) directory pointing to a web site. The "Favoris" directory is used by the French version of Internet Explorer.

Technical Details:Sami Rautiainen, F-Secure


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