ET MALWARE CozyDuke APT Possible SSL Cert 2

Query · suricata

flow:established,to_client;
tls.cert_subject;
content:"C=--"; startswith;
content:"ST=SomeState"; distance:0;
tls.cert_serial;
content:"65:5d"; depth:5; fast_pattern;
Raw source ET MALWARE CozyDuke APT Possible SSL Cert 2 · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tls $EXTERNAL_NET 443 -> $HOME_NET any (
    msg:"ET MALWARE CozyDuke APT Possible SSL Cert 2";
    flow:established,to_client;
    tls.cert_subject;
    content:"C=--"; startswith;
    content:"ST=SomeState"; distance:0;
    tls.cert_serial;
    content:"65:5d"; depth:5; fast_pattern;
    reference:url,securelist.com/blog/69731/the-cozyduke-apt/;
    reference:md5,859f167704b5c138ed9a9d4d3fdc0723;
    classtype:targeted-activity;
    sid:2020967; rev:4;
    metadata:attack_target Client_Endpoint, created_at 2015_04_22, deployment Perimeter, confidence Medium, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2024_04_01;
)

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