alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MOBILE_MALWARE Android Trojan Pegasus CnC Beacon M2"; flow:to_server,established; http.method; content:"GET"; nocase; http.uri; content:"/adinfo?gi="; fast_pattern; content:"&bf="; http.header; pcre:"/^Host\x3a[^\n\r]\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}[\r\n]+$/m"; reference:url,info.lookout.com/rs/051-ESQ-475/images/lookout-pegasus-android-technical-analysis.pdf; classtype:command-and-control; sid:2024172; rev:4; metadata:affected_product Android, attack_target Client_Endpoint, created_at 2017_04_04, deployment Perimeter, confidence High, signature_severity Major, tag Android, tag c2, updated_at 2020_10_09, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)