Beavis.655
Description Beavis.655
These are not dangerous memory resident parasitic viruses. They copy themselves into Upper Memory Blocks, hook INT 21h, then they write themselves to the end of EXE files that are executed. Depending on the system timer these viruses display one of the messages:
FIRE FIRE FIRE!
Hey butthead this sucks change the channel!
Shut up butthead or I'll kick your ass!
We're there dude.
The Beavis virus kicks ass!
The viruses also contain the text strings:
"Beavis.655,657": [BEAVIS]
"Beavis.671,673": [BEAVIS] by Crypt Keeper
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FileHider.789
Description FileHider.789
This is memory resident parasitic virus. It hooks INT 21h, and writes itself to the end of COM files that are executed or opened. While installing into the system memory, this virus searches for the original INT 21h address in such complex way that it can halt a computer.
On Friday, after infecting a COM-file, this virus sets an attribute HIDDEN for one of the EXE-files in the current directory.
Find.509
Description Find.509
This is a harmless memory resident parasitic virus. It hooks INT 21h and writes itself to the end of EXE files on FindFirst and FindNext (AH=4Eh,4Fh) DOS functions calls.
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