ET MALWARE TrochilusRAT CnC Beacon 1

Query · suricata

flow:established,to_server;
dsize:8;
content:"|bf bf af af 7e 00 00 00|"; fast_pattern;
threshold:type limit, count 1, seconds 60, track by_src;
Raw source ET MALWARE TrochilusRAT CnC Beacon 1 · 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 any -> $EXTERNAL_NET any (
    msg:"ET MALWARE TrochilusRAT CnC Beacon 1";
    flow:established,to_server;
    dsize:8;
    content:"|bf bf af af 7e 00 00 00|"; fast_pattern;
    threshold:type limit, count 1, seconds 60, track by_src;
    reference:url,asert.arbornetworks.com/wp-content/uploads/2016/01/ASERT-Threat-Intelligence-Brief-Uncovering-the-Seven-Pointed-Dagger.pdf;
    classtype:command-and-control;
    sid:2022360; rev:4;
    metadata:attack_target Client_Endpoint, created_at 2016_01_13, deployment Perimeter, confidence Medium, 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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