ET MALWARE W32/DoubleTap.APT Downloader CnC Beacon

Query · suricata

flow:established,to_server;
content:"|05 01 00 01 c0 b8 3c e5 00 51|"; depth:10;
Raw source ET MALWARE W32/DoubleTap.APT Downloader 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 any -> $EXTERNAL_NET 81 (
    msg:"ET MALWARE W32/DoubleTap.APT Downloader CnC Beacon";
    flow:established,to_server;
    content:"|05 01 00 01 c0 b8 3c e5 00 51|"; depth:10;
    reference:url,www.fireeye.com/blog/threat-research/2014/11/operation_doubletap.html;
    classtype:targeted-activity;
    sid:2019808; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2014_11_26, deployment Perimeter, confidence Medium, 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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