yasu.exe is a Emulator
belonging to Anti-SecuROMv7
from DT Soft Ltd.
. This is a utility used to hide virtual hard drives.
Non-system processes like yasu.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.