ET MALWARE [ANY.RUN] RadX RAT Keep-Alive Activity (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/check/-"; fast_pattern; startswith;
http.content_len;
byte_test:0,=,0,0,string,dec;
http.header_names;
content:"|0d 0a|Host|0d 0a|Content-Length|0d 0a 0d 0a|"; startswith;
threshold:type both,track by_src, count 5, seconds 20;
target:src_ip;
Raw source ET MALWARE [ANY.RUN] RadX RAT Keep-Alive Activity (POST) · 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 $HOME_NET any -> $EXTERNAL_NET 1024: (
    msg:"ET MALWARE [ANY.RUN] RadX RAT Keep-Alive Activity (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/check/-"; fast_pattern; startswith;
    http.content_len;
    byte_test:0,=,0,0,string,dec;
    http.header_names;
    content:"|0d 0a|Host|0d 0a|Content-Length|0d 0a 0d 0a|"; startswith;
    threshold:type both,track by_src, count 5, seconds 20;
    reference:md5,f0bc8d8a0ecd2ff441c9a24f907bd9db;
    reference:url,app.any.run/tasks/4fdde064-e353-4325-81ef-d85b22ee0f90;
    classtype:trojan-activity;
    sid:2050420; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2024_01_24, deployment Perimeter, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_01_24;
    target:src_ip;
)

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