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- ┌─────────────────────────────┐
- │ VIRUS REPORT │
- │ Italian Virus │
- └─────────────────────────────┘
-
- Synonyms: Bouncing Ball, Vera Cruz, Ping-Pong, Bouncing Dot, Missouri
- virus.
-
- Date of Origin: March, 1988.
-
- Host Machine: PC compatibles. Original version won't infect 80286 or
- 80386 computers or hard disks.
-
- Host Files: Remains resident. Infects boot sector on any disk with at
- least two sectors per cluster.
-
- OnScreen Symptoms: A bouncing ball or dot may appear on the screen upon
- activation.
-
- Increase in Size of Infected Files: n/a.
-
- Nature of Damage: Affects system run-time operation. Corrupts or
- overwrites boot sector. Does no apparent damage.
-
- Detected by: Scanv56+, F-Prot, IBM Scan.
-
- Removed by: CleanUp, MDisk, F-Prot, or DOS SYS command.
-
- Scan Code: 8E D8 A1 13 04 2D 02 00 A3 13 04 B1 06 D3 E0 2D C0 07 8E C0 BE
- 00 7C 8B FE B9 00. You can also search at offset 07CH for C7 06 4C 00 D0
- 7C 8C 0E 4E 00.
-
- Description of Operation: This is a boot sector virus. Some forms infect
- only floppies, others will also infect the boot sector of hard disks.
- This virus consists of a boot sector and 1 cluster (2 sectors used)
- marked as bad in the first copy of the FAT. The first of these sectors
- contains the rest of the virus, and the second contains the original boot
- sector. It infects all disks which have at least two sectors per
- cluster, and it occupies 2K of memory.
-
- When this virus activates (randomly) a bouncing dot/bouncing diamond
- (ASCII 4) /bouncing smiley face (ASCII 2)<Note: Depends on the strain
- which is running. There are at least three strains.> appears on the
- screen and can only be removed through reboot. The virus can be triggered
- by a disk access, should one occur during a one second window that occurs
- about every half hour. When triggered, the dot bounces off the edges of
- the screen, and passes through any text, with replacement after it.
- Sometime, this doesn't work properly, the bouncing character interacts
- with the characters on the screen, and screen displays are messed up.
- Infected diskettes have 1K in bad sectors, infected hard disks have 2K
- (and other numbers of bad sectors are possible). No known intentional
- damage. Unintentional damage - the two copies of the FAT are left
- different; DOS might not like this. Attempts to infect diskettes slows
- them down, and some computers won't read floppies, due to time-outs. No
- other damage is done.
-
- Recovery: Recover by powering down the system, and then using a
- write-protected DOS disk to boot. Use the SYS command from the floppy to
- attempt to re-create a good boot sector. Alternatively, use the program
- MD.
-
-
- ╔════════════════════════════════════════════════════════════════════╗
- ║ 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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