Immortal Riot is a virus writing group based in Sweden. They have written several simple and buggy viruses, which they actively spread. Some of these viruses were posted to Fidonet's INT.VIRUS conference as DEBUG scripts in the end of 1993.
Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.
More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.
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This virus contains text 'EXTASY! (c) Metal Militia / Immortal Riot'.
This virus contains text 'RAVAGE! (c) Metal Militia / Immortal Riot', and infects also EXE files.
There is a large number of other viruses authored by this group.