alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP DealPly Adware CnC Beacon"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/?pcrc="; depth:7; fast_pattern; content:"&v="; pcre:"/^\/\?pcrc=\d+&v=[\d.]+$/"; http.header_names; content:!"Referer|0d 0a|"; reference:md5,a34236628ea04e10430e20ac2b9d7ad2; classtype:pup-activity; sid:2021618; rev:6; metadata:attack_target Client_Endpoint, created_at 2015_08_13, deployment Perimeter, signature_severity Minor, tag c2, updated_at 2020_08_31, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)