ET MALWARE Suspected Donot Group Related Activity (POST)

Query · suricata

flow:established,to_server;
flowbits:set,ET.donotgroup;
flowbits:noalert;
http.method;
content:"POST";
http.uri;
content:!"|2e|";
http.content_type;
content:"application/x-www-form-urlencoded"; bsize:33;
http.header_names;
content:!"Referer|0d 0a|";
http.request_body;
content:"data="; startswith; fast_pattern;
target:src_ip;
target:src_ip;

Rule dependencies

Feeds into

Raw source ET MALWARE Suspected Donot Group Related 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 Suspected Donot Group Related Activity (POST)";
    flow:established,to_server;
    flowbits:set,ET.donotgroup;
    flowbits:noalert;
    http.method;
    content:"POST";
    http.uri;
    content:!"|2e|";
    http.content_type;
    content:"application/x-www-form-urlencoded"; bsize:33;
    http.header_names;
    content:!"Referer|0d 0a|";
    http.request_body;
    content:"data="; startswith; fast_pattern;
    target:src_ip;
    reference:url,ti.qianxin.com/blog/articles/Heavy-Shadows:-Summary-of-Recent-Attack-Techniques-Used-by-Donot-Group-EN/;
    reference:md5,d7e123fe7fb8a5f56ec9d89f7787340d;
    classtype:trojan-activity;
    sid:2047032; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2023_08_03, deployment Perimeter, deployment SSLDecrypt, performance_impact Moderate, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_01_31;
    target:src_ip;
)

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.