alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET PHISHING TyKit Exfil M2 2025-10-23"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:6; content:"/x.php"; fast_pattern; http.request_body; content:"|7b 22|id|22|"; startswith; content:"|22|key|22|"; distance:0; content:"|22|config|22|"; distance:0; reference:url,any.run/cybersecurity-blog/tykit-technical-analysis/; classtype:social-engineering; sid:2065379; rev:1; metadata:attack_target Client_Endpoint, created_at 2025_10_23, deployment Perimeter, signature_severity Critical, tag Phishing, tag Tykit, updated_at 2025_10_23, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)