This simple virus contains the text:
OTTO6 VIRUS, <<.S>>, YAM, COPYRIGHT MICROSHAFT INDUSTRIES 1992 (tm.)
"YAM" stands for "Youngsters against McAfee" - the name of the group responsible for it.
Allow F-Secure Anti-Virus to disinfect the relevant files.
For more general information on disinfection, please see Removal Instructions.