ET MALWARE Observed Malicious SSL Cert (AsyncRAT)

Query · suricata

flow:established,to_client;
tls.cert_subject;
content:"CN=DcRat Server"; fast_pattern; endswith;
tls.cert_issuer;
content:"O=DcRat By";
Raw source ET MALWARE Observed Malicious SSL Cert (AsyncRAT) · 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 Cert (AsyncRAT)";
    flow:established,to_client;
    tls.cert_subject;
    content:"CN=DcRat Server"; fast_pattern; endswith;
    tls.cert_issuer;
    content:"O=DcRat By";
    reference:url,twitter.com/Yeti_Sec/status/1650862013047009285/;
    classtype:domain-c2;
    sid:2045183; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_04_25, deployment Perimeter, malware_family AsyncRAT, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_04_25;
)

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