ET MALWARE FAKE YAHOO SSL Cert APT1

Query · suricata

flow:established,to_client;
tls.cert_serial;
content:"0A:38:C9:27:08:6F:96:4B:BE:75:DC:9F:C0:1A:C6:28";
tls.cert_subject;
content:"CN=mail.yahoo.com";
Raw source ET MALWARE FAKE YAHOO SSL Cert APT1 · 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 FAKE YAHOO SSL Cert APT1";
    flow:established,to_client;
    tls.cert_serial;
    content:"0A:38:C9:27:08:6F:96:4B:BE:75:DC:9F:C0:1A:C6:28";
    tls.cert_subject;
    content:"CN=mail.yahoo.com";
    reference:url,www.mandiant.com/apt1;
    classtype:targeted-activity;
    sid:2016470; rev:4;
    metadata:attack_target Client_Endpoint, created_at 2013_02_22, deployment Perimeter, confidence High, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2022_03_21;
)

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