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- ┌─────────────────────────────┐
- │ VIRUS REPORT │
- │ Jork Virus │
- └─────────────────────────────┘
-
- Host Machine: PC compatibles.
-
- Host Files: Remains resident. Infects floppy disk boot sector.
-
- Increase in Size of Infected Files: n/a.
-
- Nature of Damage: Corrupts or overwrites boot sector.
-
- Derived from: Shoe_virus (Ashar).
-
- This virus is exactly the same as the Shoe_virus (Ashar) in
- operation. It was patched to replace offset 0202H, which reads as
- follows in the Shoe virus:
-
- (c) 1986 Brain & Amjads (pvt) Ltd
-
- with
-
- (c) 1986 Jork & Amjads (pvt) Ltd
-
- Another patch the author made to the Shoe_virus was to reduce the
- identifying text at offset 0010H to "Welcome to the Dungeon (c) 1986
- Brain".
-
-
- ╔════════════════════════════════════════════════════════════════════╗
- ║ This document was adapted from the book "Computer Viruses", ║
- ║ which is copyright and distributed by the National Computer ║
- ║ Security Association. It contains information compiled from ║
- ║ many sources. To the best of our knowledge, all information ║
- ║ presented here is accurate. ║
- ║ ║
- ║ Please send any updates or corrections to the NCSA, Suite 309, ║
- ║ 4401-A Connecticut Ave NW, Washington, DC 20008. Or call our BBS ║
- ║ and upload the information: (202) 364-1304. Or call us voice at ║
- ║ (202) 364-8252. This version was produced May 22, 1990. ║
- ║ ║
- ║ The NCSA is a non-profit organization dedicated to improving ║
- ║ computer security. Membership in the association is just $45 per ║
- ║ year. Copies of the book "Computer Viruses", which provides ║
- ║ detailed information on over 145 viruses, can be obtained from ║
- ║ the NCSA. Member price: $44; non-member price: $55. ║
- ║ ║
- ║ The document is copyright (c) 1990 NCSA. ║
- ║ ║
- ║ This document may be distributed in any format, providing ║
- ║ this message is not removed or altered. ║
- ╚════════════════════════════════════════════════════════════════════╝
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