ET MALWARE Malicious SSL Certificate detected (Patchwork CnC)

Query · suricata

flow:established,to_client;
tls.cert_subject;
content:"C=CN, ST=neijing, O=Internet Widgits Pty Ltd"; fast_pattern;
content:"s"; distance:0;
tls.cert_issuer;
content:"C=CN, ST=neijing, O=Internet Widgits Pty Ltd";
content:"s"; distance:0;
Raw source ET MALWARE Malicious SSL Certificate detected (Patchwork CnC) · 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 Malicious SSL Certificate detected (Patchwork CnC)";
    flow:established,to_client;
    tls.cert_subject;
    content:"C=CN, ST=neijing, O=Internet Widgits Pty Ltd"; fast_pattern;
    content:"s"; distance:0;
    tls.cert_issuer;
    content:"C=CN, ST=neijing, O=Internet Widgits Pty Ltd";
    content:"s"; distance:0;
    reference:url,twitter.com/blackorbird/status/1225002203221393411;
    classtype:domain-c2;
    sid:2029394; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2020_02_06, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2025_07_24, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.