Caterpillar.a
Description Caterpillar.a
This is a memory resident harmless virus. It hooks INT 1Ch, 21h and writes itself to the end of COM and EXE files. The files are infected as they are started or searched in directories by DOS functions FindFirst/Next FCB. Under some conditions a "green caterpillar" begins to creep along the screen.
The Caterpillar only shows up when the following conditions are met: after the virus has infected the computer for 2 months, and has an EGA monitor or better, and runs an ANSI device driver.
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AngryBoy.2132
Description AngryBoy.2132
It is not a dangerous memory resident encrypted parasitic virus. It copies itself to the High Memory Area, hooks INT 21h and writes itself to the end of EXE files that are executed. While infecting the virus uses undocumented DOS system formats and fools anti-virus behavior blockers. Depending on the system timer the virus displays a message in Russian. It also contains the text string:
Still Alive virus. (c) Angry Boy, Vitebsk, 1998
Ani
Description Ani
It is a dangerous memory resident stealth boot virus. It hooks INT 13h and writes itself to the MBR sector of the hard drive and boot sectors of floppy disks that are accessed. The virus stores the original boot sector out of the "legal" disk area: on the track 80th. The INT 13h handler decrypts end displays the message once per hour, in case at this moment disk data are read or written:
CHUPACABRAS
The virus also contains the text string: 'ANI'.
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