ET MALWARE DPRK HIDDEN COBRA Botnet C2 Host Beacon

Query · suricata

flow:established,to_server;
content:"|1b 17 e9 e9 e9 e9|"; depth:6; fast_pattern;
Raw source ET MALWARE DPRK HIDDEN COBRA Botnet C2 Host Beacon · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp any any -> any any (
    msg:"ET MALWARE DPRK HIDDEN COBRA Botnet C2 Host Beacon";
    flow:established,to_server;
    content:"|1b 17 e9 e9 e9 e9|"; depth:6; fast_pattern;
    reference:url,www.us-cert.gov/ncas/alerts/TA17-164A;
    classtype:command-and-control;
    sid:2024383; rev:3;
    metadata:attack_target Client_Endpoint, created_at 2017_06_14, deployment Perimeter, confidence Medium, signature_severity Major, tag c2, updated_at 2020_08_19, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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