ET INFO Observed SSL Cert (URL Shortener Service - tiny .cc)

Query · suricata

flow:from_server,established;
tls.cert_subject;
content:"CN=tiny.cc"; nocase; endswith;
tls.cert_issuer;
content:"C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3";
Raw source ET INFO Observed SSL Cert (URL Shortener Service - tiny .cc) · 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 INFO Observed SSL Cert (URL Shortener Service - tiny .cc)";
    flow:from_server,established;
    tls.cert_subject;
    content:"CN=tiny.cc"; nocase; endswith;
    tls.cert_issuer;
    content:"C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3";
    classtype:misc-activity;
    sid:2027200; rev:5;
    metadata:created_at 2019_04_15, confidence High, signature_severity Informational, tag URL_Shortener_Service, updated_at 2023_04_28;
)

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