This is an encrypted resident infector of EXE files. It infects files when run and also stays resident and infects when other files are accessed. Amount of free memory is not decreased.
Virus contains this text:
CLAWS (C)1994-95 WereWolf
Virus is encrypted with a variable 32-bit key. It deletes checksum databases belonging to several different antivirus packages.
Based on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the detected program or file, or ask you for a desired action.
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See the manual for your F-Secure product on the Help Center.
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