ET MALWARE Carbanak APT CnC Beacon 1

Query · suricata

flow:established,to_server;
dsize:24;
content:"|08|"; depth:1;
byte_extract:1,1,Carbanak.Pivot,relative;
byte_test:1,!=,Carbanak.Pivot,0,relative;
byte_test:1,=,Carbanak.Pivot,3,relative;
content:"|00 00 00 02 00 00 00 00 00 00 00 00 00|"; distance:4; within:13; fast_pattern;
content:!"|00 00 00|"; within:3;
Raw source ET MALWARE Carbanak APT 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 Carbanak APT CnC Beacon 1";
    flow:established,to_server;
    dsize:24;
    content:"|08|"; depth:1;
    byte_extract:1,1,Carbanak.Pivot,relative;
    byte_test:1,!=,Carbanak.Pivot,0,relative;
    byte_test:1,=,Carbanak.Pivot,3,relative;
    content:"|00 00 00 02 00 00 00 00 00 00 00 00 00|"; distance:4; within:13; fast_pattern;
    content:!"|00 00 00|"; within:3;
    reference:md5,6ae1bb06d10f253116925371c8e3e74b;
    reference:url,securelist.com/files/2015/02/Carbanak_APT_eng.pdf;
    classtype:targeted-activity;
    sid:2020455; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2015_02_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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