ET PHISHING AES Crypto Observed in Javascript - Possible Phishing Landing M1 Dec 28 2015

Query · suricata

flow:established,from_server;
http.stat_code;
content:"200";
http.content_type;
content:"text/html"; startswith;
file.data;
content:".Ctr.decrypt"; nocase; fast_pattern;
pcre:"/^\s*?\(\s*[^,]+,\s*?[^,]+,\s*?(?:128|256|512)\s*?\)/Rsi";
Raw source ET PHISHING AES Crypto Observed in Javascript - Possible Phishing Landing M1 Dec 28 2015 · 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 AES Crypto Observed in Javascript - Possible Phishing Landing M1 Dec 28 2015";
    flow:established,from_server;
    http.stat_code;
    content:"200";
    http.content_type;
    content:"text/html"; startswith;
    file.data;
    content:".Ctr.decrypt"; nocase; fast_pattern;
    pcre:"/^\s*?\(\s*[^,]+,\s*?[^,]+,\s*?(?:128|256|512)\s*?\)/Rsi";
    classtype:social-engineering;
    sid:2025657; rev:7;
    metadata:attack_target Client_Endpoint, created_at 2015_12_29, deployment Perimeter, confidence Medium, signature_severity Critical, tag Phishing, updated_at 2020_08_25, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;
)

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