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.
Disinfection & Removal
Allow F-Secure Anti-Virus to disinfect the relevant files.
For more general information on disinfection, please see Removal Instructions.