alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET PHISHING CoGUI Phish Landing Page M1 2026-01-29"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/y1.html"; fast_pattern; endswith; http.referer; content:"/gatway/check.php?r="; reference:url,urlscan.io/result/019c0908-13a8-762e-a724-7d28132d4947/; classtype:credential-theft; sid:2067194; rev:1; metadata:attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_01_29, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Critical, tag Phishing, tag CoGUI, tag CoAceV, updated_at 2026_01_29, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)