ET MALWARE ZhCAT.HackTool Operation Cleaver HTTP CnC Beacon

Query · suricata

flow:established,to_server;
content:"POST file.php HTTP/1."; depth:21;
content:"|20 28 20|compatible"; fast_pattern;
Raw source ET MALWARE ZhCAT.HackTool Operation Cleaver HTTP CnC Beacon · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $HOME_NET 1024: -> $EXTERNAL_NET any (
    msg:"ET MALWARE ZhCAT.HackTool Operation Cleaver HTTP CnC Beacon";
    flow:established,to_server;
    content:"POST file.php HTTP/1."; depth:21;
    content:"|20 28 20|compatible"; fast_pattern;
    reference:url,www.cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf;
    classtype:command-and-control;
    sid:2019943; rev:4;
    metadata:attack_target Client_Endpoint, created_at 2014_12_16, deployment Perimeter, signature_severity Major, tag c2, updated_at 2019_10_08, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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