It is a very dangerous memory resident parasitic virus. It writes itself to the end of .COM files. While installing into the system memory it infects the C:COMMAND.COM file, then it hooks INT 21h, intercepts FindFirst/Next FCB/ASCII calls, and infects .COM files that are accessed with these calls.
On 1st of any month that virus overwrites the .PRG files with the message:
This program is designed for the lady whom I will miss for ever,
her name is MINZHOU!
Now,Thank you use this program.PRGKILLER.SLOFTXC
The virus also contains the text strings:
Inva
l not found
C:COMMAND.COM