I am an Avast user, but Avast says my computer is clean (which he is certainly not, since I still get the homepage).
Qone8 is not a infection it is a PUP
PUP = not virus / Possible Unwanted Program http://malwaretips.com/blogs/pup-optional-qone8-removal/
was your Malwarebytes updated when you scanned?
PUP are not default selected for removal, you have to mark it for removal if detected