It is a harmless memory resident parasitic virus. It hooks INT 21h and writes itself to the end of COM and EXE files that are executed or opened. The virus checks the file names by using the string:
execomastaavg.strowin.emm3scan
and does not infect the files: ASTA*.*, AVG.*, STRO*.*, WIN.*, EMM3*.*, SCAN*.*. The virus does not manifest itself in any way, it contains the ID-string "MH".
