ET PHISHING Successful Generic AES Phish M2 Oct 24 2017

Query · suricata

flow:established,from_server;
flowbits:isset,ET.genericphish;
http.content_type;
content:"text/html"; startswith;
file.data;
content:"Aes.Ctr.decrypt"; nocase; fast_pattern;
pcre:"/^\s*?\(\s*[^,]+,\s*?[^,]+,\s*?(?:128|256|512)\s*?\)/Rsi";

Rule dependencies

⚠ Higher-order rule. It fires on other rules' alerts, not on raw events, so it cannot fire on its own. Deploy the rules it depends on too.

Depends on

  • correlates · Suricata flowbits ET.genericphish
    104 rules · view all
Raw source ET PHISHING Successful Generic AES Phish M2 Oct 24 2017 · 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 Successful Generic AES Phish M2 Oct 24 2017";
    flow:established,from_server;
    flowbits:isset,ET.genericphish;
    http.content_type;
    content:"text/html"; startswith;
    file.data;
    content:"Aes.Ctr.decrypt"; nocase; fast_pattern;
    pcre:"/^\s*?\(\s*[^,]+,\s*?[^,]+,\s*?(?:128|256|512)\s*?\)/Rsi";
    classtype:credential-theft;
    sid:2024998; rev:4;
    metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2017_10_24, deployment Perimeter, confidence Medium, signature_severity Critical, tag Phishing, updated_at 2020_08_17, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;
)

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