A small, "buggy" companion-type virus. It is reported to delete files, but a 307 byte "harmless" variant may also exist.
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.