This virus activates on Thursday the 12th, popping up a window with a warning that the next day is Friday the 13th. It pretends to be an anti-virus program, called VirCheck V1.2
The virus avoids infecting programs with names containing the following patterns:
SCAN (McAfee's SCAN) CLEAN (McAfee's CLEAN) VIR(Various anti-virus programs) ARJThe ARJ compression program FLUFLUSHOT+ from Ross Greenberg COMMAND COMMAND.COM
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.