Hasta.884
Description Hasta.884
This is a very dangerous non-memory resident parasitic virus. It searches for .COM files, then writes itself to the end of the file. On January 19th, the virus formats the A: drive and displays the following message:
HASTA LUEGO LUKAS
On 18th of any month it displays:
HAPPY BIRTHDAY KAIN
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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
Headcrash.1067
Description Headcrash.1067
It is not a dangerous memory resident parasitic virus. The virus stays TSR only on odd dates, hooks INT 21h and writes itself to the end of .COM files that are executed. Depending on the system timer the virus displays:
Headcrash Industries celebrate 001F hex
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