true or false positive

I went to www. stopsign.com and was just looking around the site and when i clicked free virus scan avast popped up and said it found a virus and to abort the connection so i did and i figured that the virus must be from the stop sign website so i would like to know if it is a real virus or just a false positive the virus was called win32.wren[Trj]

It’s true. Stop-Sign (and other from that page) is a rouge program.

is there a way to stop stop sign?

I believe that this has already been discussed, try a forum search for stop sign or stopsign.