Phillip, you will not be able to do this on Ap350 right now. The signature file is getting too big for the old platforms. We are working on this solution and we are looking into the application signatures for the application you are asking to include into newer platforms.
Phillip, we are in daily contacts with our signature provider and at this moment we do not have the solution for blocking this application yet. New signatures are released frequently to be able to provide new application recognitions as they are fingerprinted