alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP PUP TheSZ AutoUpdate CnC Beacon"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/update.php?p="; fast_pattern; content:"&v="; content:"&id="; distance:0; http.user_agent; content:"AutoUpdate"; bsize:10; http.header_names; content:!"Referer|0d 0a|"; content:!"Accept-"; reference:md5,76e54deb6f81edd6b47c854c847d590d; classtype:pup-activity; sid:2021401; rev:5; metadata:attack_target Client_Endpoint, created_at 2015_07_10, deployment Perimeter, signature_severity Minor, tag c2, updated_at 2020_10_12, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)