alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE OSX/WireLurker CnC Beacon"; flow:established,from_server; file_data; content:"|7b 22|result|22 3a 7b 22|version|22 3a 22|"; flowbits:isset,ET.WireLurkerUA; reference:url,paloaltonetworks.com/content/dam/paloaltonetworks-com/en_US/assets/pdf/reports/Unit_42/unit42-wirelurker.pdf; classtype:command-and-control; sid:2019663; rev:3; metadata:attack_target Client_Endpoint, created_at 2014_11_06, deployment Perimeter, malware_family OSX_WireLurker, signature_severity Major, tag c2, updated_at 2019_07_26, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)