This is a large Polish virus. It infects files in the same way as Vacsina - COM files are infected normally, but EXE files are converted to files with COM structure, by adding a small, 139 byte loader program to them.
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.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.