I am sorry to be overly obsessive about this but I may have an answer. Its for sure a worm programming language is c.
What happens is you may delete by your anti virus program but the worm will metaphorlically change itself. The ext will remain the same. The malicious person comes back checks the ports sees the worm intact allowing him/her access to your system. In simple terms the forum has been hijacked.
One of several ways to get rid of this worm would be to reformat your drives. If this answer is a little sensitive please delete. Most people just chuck there computers out.greek39