ET MALWARE nspps Backdoor - Task Response

Query · suricata

flow:established,to_client;
http.stat_code;
content:"404";
file_data; bsize:10;
content:"|62 37 55 14 af 59 9f 28 ab 34|"; fast_pattern;
Raw source ET MALWARE nspps Backdoor - Task Response · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE nspps Backdoor - Task Response";
    flow:established,to_client;
    http.stat_code;
    content:"404";
    file_data; bsize:10;
    content:"|62 37 55 14 af 59 9f 28 ab 34|"; fast_pattern;
    reference:url,ironnet.com/blog/malware-analysis-nspps-a-go-rat-backdoor/;
    reference:md5,435716b4f56cf94fdb7f6085dced41e5;
    classtype:command-and-control;
    sid:2030110; rev:1;
    metadata:affected_product Linux, attack_target Client_Endpoint, created_at 2020_05_05, deployment Perimeter, confidence Medium, signature_severity Major, updated_at 2020_05_05;
)

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