ET MALWARE lu0bot Loader HTTP Response M2

Query · suricata

flow:established,to_client;
http.response_body;
content:"/d/s/c"; depth:20; fast_pattern;
content:"node.exe"; distance:0;
content:"7C%"; distance:0;
content:"7C%"; within:10;
content:"ActiveXObject"; distance:0;
content:"252Cunescape%25"; distance:0;
content:"WScript"; within:23;
Raw source ET MALWARE lu0bot Loader HTTP Response M2 · 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 lu0bot Loader HTTP Response M2";
    flow:established,to_client;
    http.response_body;
    content:"/d/s/c"; depth:20; fast_pattern;
    content:"node.exe"; distance:0;
    content:"7C%"; distance:0;
    content:"7C%"; within:10;
    content:"ActiveXObject"; distance:0;
    content:"252Cunescape%25"; distance:0;
    content:"WScript"; within:23;
    reference:url,fumik0.com/2021/06/24/lu0bot-an-unknown-nodejs-malware-using-udp;
    reference:md5,79b9a5e7b2e87ad7f99fbcd7d7d0a9ed;
    classtype:command-and-control;
    sid:2034517; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_11_19, deployment Perimeter, malware_family lu0bot, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_11_19;
)

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