ET MALWARE PlugX UDP CnC Beacon

Query · suricata

dsize:36;
content:"|00 00 50 00 02 00 00 00 00 04 00 00 00 10 00 00 00 00 00 00|"; depth:20;
content:!"|00 00|"; within:2;
content:"|00 00 00 00 00 00 00 00 00 00 00 00 00|"; distance:3; within:13;
Raw source ET MALWARE PlugX UDP CnC 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 udp $HOME_NET any -> $EXTERNAL_NET !53 (
    msg:"ET MALWARE PlugX UDP CnC Beacon";
    dsize:36;
    content:"|00 00 50 00 02 00 00 00 00 04 00 00 00 10 00 00 00 00 00 00|"; depth:20;
    content:!"|00 00|"; within:2;
    content:"|00 00 00 00 00 00 00 00 00 00 00 00 00|"; distance:3; within:13;
    reference:md5,2c65085e7c71fa2c02c9b65e9b747e5b;
    reference:url,trendmicro.com/cloud-content/us/pdfs/security-intelligence/white-papers/wp-operation-iron-tiger.pdf;
    classtype:command-and-control;
    sid:2021791; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2015_09_17, deployment Perimeter, confidence High, signature_severity Major, tag c2, updated_at 2019_07_26, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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