ET MALWARE Observed Malicious SSL/TLS Certificate (SilentLibrarian)

Query · suricata

flow:established,to_client;
tls.certs;
content:"|55 1d 11|";
tls.cert_subject;
content:"*.rnit.me"; fast_pattern;
Raw source ET MALWARE Observed Malicious SSL/TLS Certificate (SilentLibrarian) · 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 Observed Malicious SSL/TLS Certificate (SilentLibrarian)";
    flow:established,to_client;
    tls.certs;
    content:"|55 1d 11|";
    tls.cert_subject;
    content:"*.rnit.me"; fast_pattern;
    classtype:domain-c2;
    sid:2037246; rev:2;
    metadata:created_at 2022_07_01, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_22;
)

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