alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MOBILE_MALWARE Trojan.iPhoneOS.KeyRaider Checkin 2"; flow:to_server,established; http.method; content:"POST"; nocase; http.uri; content:"/cert.php"; http.request_body; content:"id="; depth:3; content:"&cert="; content:"&priv="; fast_pattern; content:"&flag="; http.header_names; content:!"Referer|0d 0a|"; reference:url,researchcenter.paloaltonetworks.com/2015/08/keyraider-ios-malware-steals-over-225000-apple-accounts-to-create-free-app-utopia/; classtype:trojan-activity; sid:2021738; rev:4; metadata:attack_target Mobile_Client, created_at 2015_08_31, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_05, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)