ET MALWARE Win32/Farfli.CUY KeepAlive M1

Query · suricata

dsize:16;
flow:established,to_server;
stream_size:client,>,200;
content:"|68 78 20 10 00 00 00 01 00 00 00 01 00 00 00 c9|";
Raw source ET MALWARE Win32/Farfli.CUY KeepAlive M1 · 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 Win32/Farfli.CUY KeepAlive M1";
    dsize:16;
    flow:established,to_server;
    stream_size:client,>,200;
    content:"|68 78 20 10 00 00 00 01 00 00 00 01 00 00 00 c9|";
    reference:md5,0428de20539f8341f0987457bc96fd9f;
    reference:md5,57e582c2a00cfb50a748b78b6c17ee74;
    classtype:command-and-control;
    sid:2035632; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_11_16, deployment Perimeter, malware_family Win32_Farfli_CUY, confidence High, signature_severity Major, updated_at 2021_11_16, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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