ET MALWARE LucidRook FTP C2 Activity (Exfil Host Info)

Query · suricata

flow:established,to_server;
content:"USER";
content:"PASS"; distance:0;
content:"PASV"; distance:0;
content:"STOR archive4.zip"; distance:0; fast_pattern;
Raw source ET MALWARE LucidRook FTP C2 Activity (Exfil Host Info) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert ftp $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE LucidRook FTP C2 Activity (Exfil Host Info)";
    flow:established,to_server;
    content:"USER";
    content:"PASS"; distance:0;
    content:"PASV"; distance:0;
    content:"STOR archive4.zip"; distance:0; fast_pattern;
    reference:url,blog.talosintelligence.com/new-lua-based-malware-lucidrook/;
    classtype:command-and-control;
    sid:2068693; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, affected_product Windows_8, affected_product Windows_10, attack_target Client_Endpoint, tls_state plaintext, created_at 2026_04_09, deployment Perimeter, confidence High, signature_severity Major, tag c2, tag LucidRook, updated_at 2026_04_09, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
)

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