Joker3.1084
Description Joker3.1084
It is a dangerous memory resident parasitic virus. When executed it copies itself into the system memory, and does not fix MCB list, that might cause system confusion. Then it hooks INT 21h and on several DOS calls it searches for .COM files of the current directory and writes itself to the end of the file. Depending on the system timer the virus decrypts and displays one of the messages:
You have the Joker ]I[ virus by Crypt Keeper [Joker 3]
Please insert tractor-feed toilet paper into printer
Impotence error causing erection at port adress 3E2 IRQ 5
This program requires Microsoft Windows.
Computer hungry : Insert 5-1/4 inch HAMBURGER in drive A:
Missing Light Magenta/Olive ribbon in printer.
Not enough memory.
Packed file corrupt.
Bad command or file name
Bad or missing command interpreter.
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Karol.1000
Description Karol.1000
It is a harmless memory resident parasitic virus. It hooks INT 21h and writes itself to the end of EXE files that are executed. While installing and infecting is uses several tricks with redirection of INT 1,8,9 (sets these INTs to subroutines of infection and calls them by INT instruction). The virus contains the text string:
KaRoLmArKs V2.3
Kasimir family
Description Kasimir family
These are dangerous nonmemory resident parasitic viruses. They search for .EXE files and write themselves to the end of the file. Since 1994 they erase the FAT on the C: drive and display the message:
KASIMIR STRIKE NOW!
The viruses also contain the text:
SV00 Lubj
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