ET MALWARE NanoCore RAT Keep-Alive Beacon (Inbound)

Query · suricata

flow:established,to_client;
dsize:12;
content:"|08 00 00 00 c1 c3 d0 32 43 59 a1 78|"; fast_pattern;
Raw source ET MALWARE NanoCore RAT Keep-Alive Beacon (Inbound) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE NanoCore RAT Keep-Alive Beacon (Inbound)";
    flow:established,to_client;
    dsize:12;
    content:"|08 00 00 00 c1 c3 d0 32 43 59 a1 78|"; fast_pattern;
    reference:md5,c38152f0098b7d0ad4a8de0b7b8df193;
    reference:url,medium.com/@the_abjuri5t/nanocore-rat-hunting-guide-cb185473c1e0;
    classtype:command-and-control;
    sid:2046917; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_03_30, deployment Perimeter, malware_family NanoCore, confidence High, signature_severity Major, tag c2, updated_at 2023_07_26, former_sid 2841753, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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