alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP User-Agent (DIALER)"; flow:to_server,established; threshold:type limit, count 3, seconds 300, track by_src; http.user_agent; content:"DIALER"; nocase; depth:6; classtype:pup-activity; sid:2003566; rev:15; metadata:created_at 2010_07_30, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_19;)