It is a dangerous memory resident parasitic virus. It hooks INT 21h, 2Fh and writes itself to the end of EXE files that are terminated. Before executing infected files the virus disinfects them, and reinfects on termination.
On 13th of any month from 1pm till 2pm the virus erases programs' code and displays the message:
COMMUNISM
Written by Jack Rose. 22 Jan 1998
The INT 2F handler may displays the message:
TEQUILA
