This is not a common virus at all, but we got some questions about it, since F-Secure' F-PROT used to have a false alarm on it. The false alarm was on a program called TBAVKEY.EXE, which was a program to crack the protection of Thunderbyte antivirus utility.
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.