This is a PS-MPC-based virus, which spreads in an encrypted form. The encryption layer is done with a shareware utility called Protect! COM/EXE v4.0.
This virus is not common at all. However, false alarms of it are quite common, since some versions of TBScan and Intel Lanprotect identify all files protected with Protect! v4.0 as infected by this virus.
Disinfection & Removal
Description Created: Mikko Hypponen, F-Secure