ET MALWARE Qudox CnC Activity

Query · suricata

flow:established,to_server;
http.start;
content:"GET /gate.php HTTP/1.1|0d 0a|Host|3a 20|";
http.request_body;
content:"0WmkD4"; startswith; fast_pattern;
http.header_names; bsize:26;
content:"|0d 0a|Host|0d 0a|Content-Length|0d 0a 0d 0a|";
threshold:type limit, track by_src, count 1, seconds 60;
Raw source ET MALWARE Qudox CnC Activity · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Qudox CnC Activity";
    flow:established,to_server;
    http.start;
    content:"GET /gate.php HTTP/1.1|0d 0a|Host|3a 20|";
    http.request_body;
    content:"0WmkD4"; startswith; fast_pattern;
    http.header_names; bsize:26;
    content:"|0d 0a|Host|0d 0a|Content-Length|0d 0a 0d 0a|";
    threshold:type limit, track by_src, count 1, seconds 60;
    reference:md5,4806ceacf1f9ae4faddbace5201d36f0;
    classtype:command-and-control;
    sid:2030682; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2020_08_13, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_13;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.