ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ³ VIRUS REPORT ³ ³ Typo (Boot infector) ³ ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ Synonyms: Mistake virus Date of Origin: June, 1989. Place of Origin: Israel. Host Machine: PC compatibles. Host Files: Remains resident. Infects floppy and hard disk boot sectors. Increase in Size of Infected Files: n/a. Nature of Damage: Affects system run-time operation. Corrupts or overwrites boot sector. Detected by: Scanv56+, F-Prot, IBM Scan, Pro-Scan. Removed by: MDisk, F-Prot, or DOS SYS command. Derived from: Ping Pong? Typo Boot was first isolated in Israel by Y. Radai in June, 1989. This virus takes up 2K at the upper end of system memory once it has become memory resident. The virus will swap some characters on printouts with phonemes (for example, C vs. K), and transpose or substitute digits. Only printouts are affected. Typo Boot may be derived from Ping Pong, because the two have very similar internal structures. It can be removed from a disk by using MDisk, CleanUp, DOS SYS command, or just about any Ping Pong disinfector. 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