ntrights.exe is a Public Domain legitimate console-based program used to grant or revoke rights to a user or group. This process can be used maliciously and has been known to be bundled with viruses such as the Backdoor.Danrit. "If unaccounted for, this process should be removed immediately. "
Non-system processes like ntrights.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