Virus Database


Dennis.656

Description Dennis.656

It is a benign virus. It infects EXE files that are executed. On June 20th it also hooks INT 1Ch and blinks by Num/Caps/Scroll Lock indicators.

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Hdzz.566

Description Hdzz.566

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. On August, 1st it erases the disk sectors. The virus contains the text strings:
HDZZ
COMSPEC

Headache.269.a

Description Headache.269.a

These are harmless memory resident parasitic viruses. They hook INT 21h and write themselves to the end of .COM files that are closed. While infecting a file they use undocumented System File Tables.
"Headache.624" disinfect infected files, if they are opened. This virus contains the string:
Headache

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