This is a harmless memory resident encrypted parasitic virus. It hooks INT 21h and writes itself to the end of COM files. It contains the mask string "*.COM".
Sometimes it displays the message:
THE MVF-FILEVIRUS
Programmed 1991 by the MVF
MAD Virus Factory
It also contains the text string:
No. 0001" or "28/9/91 - V1.6
