ET MALWARE RedExt C2 Agent Exfiltration

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/api/exfil"; fast_pattern;
http.request_body;
content:"|22|action|22 3a|";
content:"|22|payload|22 3a|";
target:src_ip;
Raw source ET MALWARE RedExt C2 Agent Exfiltration · 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 -> any any (
    msg:"ET MALWARE RedExt C2 Agent Exfiltration";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/api/exfil"; fast_pattern;
    http.request_body;
    content:"|22|action|22 3a|";
    content:"|22|payload|22 3a|";
    reference:url,github.com/Darkrain2009/RedExt;
    classtype:trojan-activity;
    sid:2062247; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2025_05_12, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, updated_at 2025_05_12;
    target:src_ip;
)

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