iw.exe is the executable for Internet Washer. Internet Washer Provides features such as a cookie cleaner. Removing this process will disable Internet Washer Pro.
Non-system processes like iw.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