ET MALWARE Retdoor CnC Checkin

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri; bsize:10;
content:"/api/infos";
http.request_body;
content:"name|3d 5e|"; startswith; fast_pattern;
content:"|26|ret|3d|"; endswith;
target:src_ip;
Raw source ET MALWARE Retdoor CnC Checkin · 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 any (
    msg:"ET MALWARE Retdoor CnC Checkin";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri; bsize:10;
    content:"/api/infos";
    http.request_body;
    content:"name|3d 5e|"; startswith; fast_pattern;
    content:"|26|ret|3d|"; endswith;
    reference:url,www.zscaler.com/blogs/security-research/unveiling-revc2-and-venom-loader;
    classtype:trojan-activity;
    sid:2058145; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_12_09, deployment Perimeter, malware_family Retdoor, performance_impact Low, confidence High, signature_severity Major, tag Venom_Spider, tag Golden_Chickens, updated_at 2024_12_09;
    target:src_ip;
)

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