alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE iOS/WireLurker CnC Beacon"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/getversion.php?v="; fast_pattern; content:"&adid="; offset:18; http.header_names; content:!"Referer|0d 0a|"; reference:url,paloaltonetworks.com/content/dam/paloaltonetworks-com/en_US/assets/pdf/reports/Unit_42/unit42-wirelurker.pdf; classtype:command-and-control; sid:2019664; rev:4; metadata:attack_target Client_Endpoint, created_at 2014_11_06, deployment Perimeter, signature_severity Major, tag c2, updated_at 2020_09_27, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)