ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ³ VIRUS REPORT ³ ³ Joker ³ ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ Synonyms: Jocker Date of Origin: December, 1989. Place of Origin: Poland. Host Machine: PC compatibles. Host Files: Non resident. Infects EXE files. OnScreen Symptoms: Infected programs display bogus error messages. Nature of Damage: Damages program files. Detected by: Scanv57+, Pro-Scan. Removed by: CleanUp, Scan/D, or delete infected files. The Joker was isolated in Poland in December, 1989. This virus is a generic .EXE file infector, and is a poor replicator (ie. it does not quickly infect other files). Infected programs will display bogus error messages and comments, which cam be found in the infected files at the beginning of the viral code. Some of the messages and comments include: Incorrect DOS version Invalid Volume ID Format failure Please put a new disk into drive A: End of input file END OF WORKTIME. TURN SYSTEM OFF! Divide Overflow Water detect in Co-processor I am hungry! Insert HAMBURGER into drive A: NO SMOKING, PLEASE! Thanks. Don't beat me !! Don't drink and drive. Another cup of cofee ? OH, YES! Hard Disk head has been destroyed. Can you borrow me your one? Missing light magenta ribbon in printer! In case mistake, call GHOST BUSTERS Insert tractor toilet paper into printer. This virus may also alter .DBF files, adding messages to them. ÉÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ» º This document was adapted from the book "Computer Viruses", º º which is copyright and distributed by the National Computer º º Security Association. It contains information compiled from º º many sources. To the best of our knowledge, all information º º presented here is accurate. º º º º Please send any updates or corrections to the NCSA, Suite 309, º º 4401-A Connecticut Ave NW, Washington, DC 20008. Or call our BBS º º and upload the information: (202) 364-1304. Or call us voice at º º (202) 364-8252. This version was produced May 22, 1990. º º º º The NCSA is a non-profit organization dedicated to improving º º computer security. Membership in the association is just $45 per º º year. Copies of the book "Computer Viruses", which provides º º detailed information on over 145 viruses, can be obtained from º º the NCSA. Member price: $44; non-member price: $55. º º º º The document is copyright (c) 1990 NCSA. º º º º This document may be distributed in any format, providing º º this message is not removed or altered. º ÈÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍͼ  Downloaded From P-80 International Information Systems 304-744-2253