vesmgrsub.exe is a VAIO Event Service(Service Sub Module)
from Sony Corporation
belonging to VAIO Event Service
Non-system processes like vesmgrsub.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.