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Virus.DOS.HongKang.1904 or HongKang is a virus that runs on DOS.

Details

HongKang is a memory resident parasitic virus. It hooks INT 21h and writes itself to the end of .COM and .EXE files that are executed or accessed by DOS functions FindFirst/Next FCB (DIR command). The virus has a bug and cannot infect files under "standard" DOS.

On April 7 it decrypts and displays the message:

Celebrate HongKang return to CHINA 1997 !

The virus then deletes files instead of infecting them. 

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