alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Installer Analytics Checkin (POST)"; flow:established,to_server; http.method; content:"POST"; http.host; content:"collect.installeranalytics.com"; fast_pattern; reference:url,installeranalytics.com; classtype:pup-activity; sid:2066619; rev:1; metadata:attack_target Client_Endpoint, created_at 2026_01_07, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_01_07, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1496, mitre_technique_name Resource_Hijacking;)