Morgul Family
Description Morgul Family
These are dangerous memory resident parasitic viruses. They copy themselves to the Interrupt Vectors Table, hook INT 21h and writes themselves to the end of .COM files that are accessed. While installing memory resident they overwrite the vector of VGA Internal Interrupt and halt the computers with installed VGA card. The viruses contain the text strings:
"Morgul.400,401": Morgul
"Morgul.424": Smeagol
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Punisher.1632
Description Punisher.1632
It is a harmless memory resident encrypted parasitic virus. It traces INT 13h, 21h, hooks INT 21h, and then writes itself to the end of COM and EXE files that are accessed. The virus checks the file name, and does not infect the files: A*.*. S*.*, I*.*, C*.*. The virus contains the text string:
The Punisher-I
Puppets.960
Description Puppets.960
This is a relatively harmless memory resident parasitic virus. It hooks INT 9, 10h, and 21h, and writes itself to the end of COM- and EXE-files that are executed or opened.
When Alt-Ctrl-Del is pressed (warm rebooting), the virus tries to stay memory resident. It displays the following:
Phoenix ROM BIOS PLUS Version 5.23 08
Copyrigth (C) 1985-1988 Phoenix Technologies Ltd.
All Rights Reserved
then delays, calls INT 19h (bootstrap loader), gains control by INT 10h, and then hooks INT 9 and 21h.
While rebooting, if the system date is between January and October, the virus also displays the following message:
This virus written 1990. (C) Copyrigth The Master of Puppets
Public Domain Software.
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