Threat description


Category: Malware
Type: Virus
Platform: W32
Aliases: Catholic


Catholic is a resident parasitic infector of COM files. It was found from Finland in the spring of 1994.


Automatic action

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


More information on scanning and removal options available in your F-Secure product can be found in the Help Center.

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 file is executed the virus goes resident in memory, decreasing the amount of available DOS memory by approximately 2300 bytes.

All COM files that are executed or opened (for example, copied) will be infected by the virus. Infected files grow by 1129 bytes. This change in file size is not visible when the virus is resident in memory. The virus does not infect EXE files that have been renamed to have COM extension.

The virus is encrypted with a 8-bit key. Underneath the encryption the following text can be seen:

     May The Peace Be With You....         ROB DA MOB FUCK YA !         CATHOLIC CORRUPTED GAY!  


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