ET PHISHING Observed UNK_SmudgedSerpent Style URI

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;
)