Back in 2009 there were some claimns about it being a Chinese gov. trojan
but it is still avaialbe and there is no new info on it since 2009.

Malwarebytes and a few others claim it is a trojan but the majority of AV
does not. All the big names scanners do not detect it as a trojan. It was
scanned at virus total and got something like 5 postiives out of 41
scanners. That is not very convincing numbers so what's the real deal with
UltraSurf? Was it just a competitors smear campaing or what?

http://www.ultrareach.com/

http://en.wikipedia.org/wiki/Ultrasurf