udcsdr.exe is a process
. This file is usually associated with Drive Cleaner which disguises itself through a drive cleaning utility but is in fact a Trojan that uses very annoying advertising techniques.
Non-system processes like udcsdr.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