ET MALWARE Gamaredon APT Related CnC Activity (POST) M3

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".html=?";
http.user_agent;
content:"|3b 3b 2f|"; fast_pattern;
http.header_names;
content:!"Referer";
target:src_ip;
Raw source ET MALWARE Gamaredon APT Related CnC Activity (POST) M3 · 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 Gamaredon APT Related CnC Activity (POST) M3";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".html=?";
    http.user_agent;
    content:"|3b 3b 2f|"; fast_pattern;
    http.header_names;
    content:!"Referer";
    reference:url,twitter.com/StopMalvertisin/status/1674460280900947970;
    reference:md5,b9b76f5c34a0788e10ae6cb95a0e1453;
    reference:md5,1f5e6d502290f9ece3f0e7047facc7b6;
    classtype:command-and-control;
    sid:2046701; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_06_30, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_06_30;
    target:src_ip;
)

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