barbut process using 100% cpu and connecting

In my case i am having debian 3.1 sarge linux as 24/7 router/server. Yesterday i have come across a process called "barbut", it is using 100% cpu and is established connections to 195.73.177.146:666 automatically. I am not able to find out any exe related to it. Is there anyone who has come across it or has any idea about it??

It seems as if it is a root kit trojan, If it is so than try running a through scan using avg or spybot antivirus. They are quite capable of dealing with trojan's. Just download and install anyone of them, run a through scan and check out if you are able to get rid of barbut process or not.