ET MALWARE CozyDuke APT Possible SSL Cert 8

Query · suricata

flow:established,to_client;
tls.cert_serial;
content:"5f:31"; startswith;
tls.cert_subject;
content:"C=--"; startswith;
content:"SomeCity"; distance:0;
content:"root@localhost.localdomain"; fast_pattern;
Raw source ET MALWARE CozyDuke APT Possible SSL Cert 8 · 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 any -> $HOME_NET any (
    msg:"ET MALWARE CozyDuke APT Possible SSL Cert 8";
    flow:established,to_client;
    tls.cert_serial;
    content:"5f:31"; startswith;
    tls.cert_subject;
    content:"C=--"; startswith;
    content:"SomeCity"; distance:0;
    content:"root@localhost.localdomain"; fast_pattern;
    reference:md5,f58a4369b8176edbde4396dc977c9008;
    reference:url,www.symantec.com/security_response/writeup.jsp?docid=2015-030500-0430-99;
    reference:url,securelist.com/blog/69731/the-cozyduke-apt/;
    classtype:targeted-activity;
    sid:2020974; rev:6;
    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_12;
)

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