ET MALWARE DonotGroup Backdoor Activity (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
pcre:"/^\/[A-Za-z0-9]{17}\.php$/";
content:".php"; endswith;
http.header_names;
content:"|0d 0a|Content-Type|0d 0a|User-Agent|0d 0a|Host|0d 0a|Content-Length|0d 0a|Cache-Control|0d 0a 0d 0a|"; startswith;
http.request_body;
content:"data="; startswith;
content:"|7c 7c 7c|"; within:258; fast_pattern;
target:src_ip;
Raw source ET MALWARE DonotGroup Backdoor Activity (POST) · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE DonotGroup Backdoor Activity (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    pcre:"/^\/[A-Za-z0-9]{17}\.php$/";
    content:".php"; endswith;
    http.header_names;
    content:"|0d 0a|Content-Type|0d 0a|User-Agent|0d 0a|Host|0d 0a|Content-Length|0d 0a|Cache-Control|0d 0a 0d 0a|"; startswith;
    http.request_body;
    content:"data="; startswith;
    content:"|7c 7c 7c|"; within:258; fast_pattern;
    reference:md5,9946df6c429b83009535dca8d1a5d321;
    reference:url,twitter.com/Timele9527/status/1597955256423309312;
    classtype:trojan-activity;
    sid:2041120; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2022_11_30, deployment Perimeter, deployment SSLDecrypt, malware_family DonotGroup, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_01_04, reviewed_at 2023_09_05;
    target:src_ip;
)

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