ET PHISHING Observed Tycoon Credential Theft Form

Query · suricata

flow:established,to_client;
http.response_body;
content:"a|40|b|2e|com|3c 2f|span|3e|"; fast_pattern;
target:dest_ip;
Raw source ET PHISHING Observed Tycoon Credential Theft Form · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET PHISHING Observed Tycoon Credential Theft Form";
    flow:established,to_client;
    http.response_body;
    content:"a|40|b|2e|com|3c 2f|span|3e|"; fast_pattern;
    classtype:social-engineering;
    sid:2065917; rev:2;
    metadata:attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2025_11_26, deployment Perimeter, deployment SSLDecrypt, malware_family Tycoon2FA, confidence Medium, signature_severity Critical, tag Phishing, updated_at 2026_01_29, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;
    target:dest_ip;
)

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