ET POLICY Self Signed SSL Certificate (SomeOrganizationalUnit)

Query · suricata

flow:established,to_client;
tls.cert_subject;
content:"OU=SomeOrganizationalUnit"; fast_pattern;
Raw source ET POLICY Self Signed SSL Certificate (SomeOrganizationalUnit) · 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 POLICY Self Signed SSL Certificate (SomeOrganizationalUnit)";
    flow:established,to_client;
    tls.cert_subject;
    content:"OU=SomeOrganizationalUnit"; fast_pattern;
    classtype:policy-violation;
    sid:2013659; rev:6;
    metadata:attack_target Client_Endpoint, created_at 2011_09_15, deployment Perimeter, confidence High, signature_severity Informational, tag SSL_Malicious_Cert, updated_at 2022_03_23;
)

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