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- ┌─────────────────────────────┐
- │ VIRUS REPORT │
- │ Oropax Virus │
- └─────────────────────────────┘
-
- Synonyms: Music virus, Musician virus.
-
- Date of Origin: December, 1989.
-
- Host Machine: PC compatibles.
-
- Host Files: Remains resident; infects COM files.
-
- Increase in Size of Infected Files: length increases by 2756-2806 bytes,
- so that total length is evenly divisible by 51. Most common length
- increase is 2,773 bytes.
-
- Nature of Damage: Affects system run-time operation; corrupts program
- files.
-
- Detected by: Scanv53+, F-Prot, IBM Scan, Pro-Scan.
-
- Removed by: CleanUp, SCAN/D, F-Prot, or delete infected files.
-
- A memory resident virus infecting COM files. When an infected
- application is executed, the virus installs in memory trapping the DOS
- 21h interrupt. Thereafter, when a program attempts to create a
- subdirectory, remove a subdirectory, create a file, open a file, delete
- a file, get/set file attributes, rename a file, delete a file (with FCB),
- create file (with FCB) or rename a file (with FCB), one COM file is
- infected in the home directory. COMMAND.COM, COM files with length
- divisible by 51, COM files with an attribute other than normal or
- archive, or COM files with a length of 61980 bytes will not be infected.
- The virus seems to activate randomly after infecting a file. If
- activated, five minutes after infection it will play 3 or 6 melodies
- (depending on version) repeatedly with a 7 minute interval in between
- each.
-
-
- ╔════════════════════════════════════════════════════════════════════╗
- ║ 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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