When an infected program is run, an 'European Cracking Crew' -logo screen will sometimes be displayed. The screen is made of graphical characters and includes the following texts:
This program is cracked by Notice this: TS ain't smart at all. Distribution since 11-06-1987 (or 06-11-1987) Press any key
There are several variants of this virus, and the message varies depending on the variant.
Note that this virus has nothing to do with the "Join The Crew" hoax message.
Allow F-Secure Anti-Virus to disinfect the relevant files.
For more general information on disinfection, please see Removal Instructions.