This host appears to be running Fluxay Sensor on this port. Fluxay Sensor is a backdoor that allows an intruder to gain remote access to files on your computer. Similar to SubSeven, this program installs as a service and is password protected to make it difficult to stop or remove it. An attacker may use this backdoor to steal passwords from the remote host or use it in other attacks.
Solution
Refer to the link referenced above for information on detection and removal.