ET MALWARE SSL/TLS Certificate Observed (StrongPity)

Query · suricata

flow:established,to_client;
tls.cert_subject;
content:"CN=srv75";
tls.cert_issuer;
content:"CN=srv75";
tls.cert_serial;
content:"00:D2:68:75:C1:88:0D:92:50"; fast_pattern;
Raw source ET MALWARE SSL/TLS Certificate Observed (StrongPity) · 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 SSL/TLS Certificate Observed (StrongPity)";
    flow:established,to_client;
    tls.cert_subject;
    content:"CN=srv75";
    tls.cert_issuer;
    content:"CN=srv75";
    tls.cert_serial;
    content:"00:D2:68:75:C1:88:0D:92:50"; fast_pattern;
    reference:url,www.alienvault.com/blogs/labs-research/newly-identified-strongpity-operations;
    classtype:trojan-activity;
    sid:2027713; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_07_16, deployment Perimeter, confidence High, signature_severity Major, tag StrongPity, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_31;
)

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