alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MOBILE_MALWARE Android Trojan Pegasus CnC Beacon"; flow:to_server,established; http.method; content:"POST"; nocase; http.uri; content:"/support.aspx"; endswith; http.header; content:"SessionId1|3a 20|"; content:"SessionId2|3a 20|"; fast_pattern; http.user_agent; content:"|3b 20|Android|20|"; http.request_body; content:"|0d 0a|Content-Disposition|3a 20|form-data|3b 20|name=|22|header|22 3b 20|filename=|22|header|22 0d 0a|"; http.header_names; content:!"Referer|0d 0a|"; reference:url,info.lookout.com/rs/051-ESQ-475/images/lookout-pegasus-android-technical-analysis.pdf; classtype:command-and-control; sid:2024171; rev:5; 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_11_05, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)