旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � VIRUS REPORT � � Icelandic Virus Version 2 � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴� Synonyms: System Virus, One in Ten virus Date of Origin: July, 1989. Place of Origin: Iceland. Host Machine: PC compatibles. Host Files: Remains resident. Infects EXE files. Increase in Size of Infected Files: 632 or 661 bytes. Nature of Damage: Affects system run-time operation. Corrupts program or overlay files. Detected by: Scanv56+, F-Prot, IBM Scan, Pro-Scan. Removed by: CleanUp, Scan/D, or F-Prot. Derived from: Icelandic virus. Scan Code: You can search at offset 0B8H for 2E C6 06 79 02 02 90 50 53 51. This version of the Icelandic virus differs from the Icelandic in that it bypasses INT21 and doesn't have the code to mark a cluster bad. It doesn't have the INT13 check that the second version does. Each time the Icelandic-II virus infects a program, it will modify the file's date, thus making it fairly obvious that the program has been changed. The virus will also remove the read-only attribute from files, but does not restore it after infecting the program. The Icelandic-II virus can infect programs even if the system is running an anti-viral TSR that monitors interrupt 21, such as FluShot+. On hard disks larger than 10 MB, there are no bad sectors marked in the FAT as there is with the Icelandic virus. Although this version has been called version 2, it may actually have been the first released draft, and the Icelandic 1 may be the second. �袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴� � 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. � 훤袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴暠  Downloaded From P-80 International Information Systems 304-744-2253