ET RETIRED Playful Taurus Observe malicious SSL Cert (self-signed www .netgate .com)

Query · suricata

flow:established,to_client;
tls.cert_issuer;
content:"C=us, ST=ny, L=ny, O=netgate, OU=netgate, CN=www.netgate.com";
content:"email@netgate.com"; distance:0; fast_pattern;
Raw source ET RETIRED Playful Taurus Observe malicious SSL Cert (self-signed www .netgate .com) · 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 RETIRED Playful Taurus Observe malicious SSL Cert (self-signed www .netgate .com)";
    flow:established,to_client;
    tls.cert_issuer;
    content:"C=us, ST=ny, L=ny, O=netgate, OU=netgate, CN=www.netgate.com";
    content:"email@netgate.com"; distance:0; fast_pattern;
    reference:url,unit42.paloaltonetworks.com/playful-taurus/;
    classtype:trojan-activity;
    sid:2043364; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2023_01_19, deployment Perimeter, malware_family PlayfulTaurus, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2025_07_24, reviewed_at 2024_09_30;
)

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