mohaa.exe is a MOHAA
belonging to Medal of Honor Allied Assault(tm) by Electronic Arts, Inc. and 2015
from Electronic Arts Inc.
Non-system processes like mohaa.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues.