It is a dangerous memory resident parasitic virus. It hooks INT 21h and writes itself to the end of .COM and .EXE files that are executed or opened. On February, 16th it halts the computer and displays the message:
HAPPY BIRTHDAY MIRCEA!
THIS VIRUS WAS MADE BY RACASAN MIRCEA AND TODAY IS HIS BIRTHDAY. SO, GO AHEAD AND CELEBRATE, AND IF YOU WANT TO WRITE HIM, HERE IS HIS ADDRESS : LEODINGER STRAßE 1/11 A-4050 TRAUN ÖSTERREICH The virus also contains the ID-string: RMC16277