33367 is an unassigned port as seen on the IANA site http://www.iana.org/assignments/port-numbers and it is not associated specifically with any trojan, virus or worm http://www.glocksoft.com/trojan_port.htm. I'd have to agree with plastic here and say that the most likely scenario is a script-donkey has merely changed the port setting on whatever crap he/she is trying to pass along to you.

--TH13