65 lines
3.1 KiB
Plaintext
65 lines
3.1 KiB
Plaintext
ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
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³ VIRUS REPORT ³
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³ Taiwan Virus ³
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ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
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Date of Origin: January, 1990.
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Place of Origin: Taiwan, R.O.C.
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Host Machine: PC compatibles.
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Host Files: Not memory resident. Infects COM files, including
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COMMAND.COM.
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Increase in Size of Infected Files: 708 or 743 bytes.
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Nature of Damage: corrupts COM files.
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Detected by: Scanv56+, F-Prot.
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Removed by: CleanUp, Scan/D, or delete infected files.
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Whenever this virus is activated, it attempts to infect up to three
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COM files. The search for uninfected COM files begins in the root
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directory of C:. Once an uninfected COM file is located, the virus
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infects the file by copying the viral code to the first 743 bytes of the
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file, relocating the original first 743 bytes of the file to the end of
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the COM file.
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If the COM file selected for infection is less than 743 bytes, the
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resulting infected COM file will always be 1,486 bytes in length. This
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"bug" results from a failure to check for the original file length.
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The virus is destructive. On the 8th day of any month, when an
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infected program is run, the virus will perform an absolute disk write
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for 160 sectors starting at logical sector 0 on the C: and D: drives,
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overwriting the FATs and root directories.
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ÉÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ»
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º This document was adapted from the book "Computer Viruses", º
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º which is copyright and distributed by the National Computer º
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º Security Association. It contains information compiled from º
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º many sources. To the best of our knowledge, all information º
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º presented here is accurate. º
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º º
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º Please send any updates or corrections to the NCSA, Suite 309, º
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º 4401-A Connecticut Ave NW, Washington, DC 20008. Or call our BBS º
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º and upload the information: (202) 364-1304. Or call us voice at º
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º (202) 364-8252. This version was produced May 22, 1990. º
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º º
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º The NCSA is a non-profit organization dedicated to improving º
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º computer security. Membership in the association is just $45 per º
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º year. Copies of the book "Computer Viruses", which provides º
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º detailed information on over 145 viruses, can be obtained from º
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º the NCSA. Member price: $44; non-member price: $55. º
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º º
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º The document is copyright (c) 1990 NCSA. º
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º º
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º This document may be distributed in any format, providing º
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º this message is not removed or altered. º
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ÈÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍͼ
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