                    Ŀ
                            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".


ͻ
  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.                           
ͼ

Downloaded From P-80 International Information Systems 304-744-2253
