GD.539
Description GD.539
It is a very dangerous memory resident parasitic virus. It hooks INT 21h and writes itself to the end of COM files that are executed. Depending on the system time the virus overwrites boot sector and the FAT of the C: drive and display the message:
Grave-digger!!!
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KSV Family
Description KSV Family
These are dangerous memory resident parasitic viruses. They hook INT 21h and write themselves to the end of EXE files that are executed. They contain lot of errors, and infected files often halt the system. The viruses contain/display the text strings:
+--------------------+
¦ KSV Aids ¦
+--------------------+
Kthulhu.512
Description Kthulhu.512
It is not a dangerous nonmemory resident parasitic virus. It searches for .COM files and writes itself to the beginning of the file. It displays the message:
KTHULHU Today is my birthday.
IT is coming.
has gone.
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