BestWishes Family
Description BestWishes Family
These are very dangerous memory-resident viruses that affect .COM-and .EXE-files by standard way as they are opened or executed. On every fifth infection the viruses modify BPB of the Boot-sector of the current disk: reduce by one (zeroize if current day is Friday that falls on the 13th of any month) the contents of the word bearing number of clusters on the disk. "BestWishes.970" treats very rudely the memory and files and as a result may hang up the system and corrupt files.
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Fisher Family
Description Fisher Family
These are not dangerous memory resident parasitic stealth viruses.
Fisher.1100
It hooks INT 21h and infects by the standard way COM-files. It contains the internal text string "COMcom". Sometimes it tries to type the message:
Copyright 1992 by Fisher. Version 3.0 . PUNK-ROCK & BEER FOREVER !
Fisher.2420
This infector hooks INT 17h, 21h and hits COM- and EXE-files. On printing it inserts rude words into the text which is printing. This infector contains the internal text string also:
COMcomEXEexe
(c) Copyright 1991-92 by Fisher. Version 2.0 .
FishN6.a
Description FishN6.a
This is an encoded memory-resident very dangerous virus that hits COM and EXE files by standard way upon their execution and closing. In infected files it increases the year of last modification by 100. The virus supports practically all functions of a stealth-virus. FishN6 encodes its own body not only in files, but also in its TSR copy (on entering the system the virus decodes itself through the INT 21h chain, on exiting - it encodes itself).
Since 1991 FishN6 hangs up the system reporting the following:
FISH VIRUS #6 - EACH DIFF - BONN 2/90
Apart from this string, it contains the following lines:
COD
SHARK
CARP
BASS
TROUT
MUSKYZ
SOLE
PIKE
MACKEREL
FISH
TUNA
FISH FI
The virus hooks INT 13 and INT 21h.
If the number of current day is equal to the number of current month then this virus erases the disk C: sectors. This infector contains the internal text strings:
Don't trouble trouble until trouble troubles you.
(c)Fly
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