alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET PHISHING Observed UNK_SmudgedSerpent Style URI"; flow:established,to_server; http.method; content:"GET"; http.uri.raw; bsize:28; pcre:"/^\x2f[a-zA-Z]{15}\x2f\x2flogin.html$/"; content:"//login.html"; endswith; fast_pattern; classtype:credential-theft; sid:2065399; rev:1; metadata:attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2025_06_27, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Phish, tag TA399, updated_at 2025_10_27, former_sid 2863156, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing; target:src_ip;)