alert http $HOME_NET any -> $EXTERNAL_NET 1024: (msg:"ET MOBILE_MALWARE NSO Pegasus iOS Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/stadium/pop2.html?key="; fast_pattern; content:"&n="; distance:0; reference:url,www.amnesty.org/en/latest/research/2021/07/forensic-methodology-report-how-to-catch-nso-groups-pegasus/; classtype:trojan-activity; sid:2033357; rev:1; metadata:attack_target Mobile_Client, created_at 2021_07_19, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_07_19;)