ET MALWARE Suspected Kimsuky Related Actvity (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.request_line;
content:".php?query=50 HTTP/1.1"; endswith; fast_pattern;
http.header_names;
content:"|0d 0a|UA-CPU|0d 0a|";
content:!"Referer|0d 0a|";
http.user_agent;
content:!"Linux";
target:src_ip;
Raw source ET MALWARE Suspected Kimsuky Related Actvity (GET) · 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 Kimsuky Related Actvity (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.request_line;
    content:".php?query=50 HTTP/1.1"; endswith; fast_pattern;
    http.header_names;
    content:"|0d 0a|UA-CPU|0d 0a|";
    content:!"Referer|0d 0a|";
    http.user_agent;
    content:!"Linux";
    reference:md5,002fd493096214a9a44d82acb7f1ac30;
    reference:url,twitter.com/h2jazi/status/1658133904618934272;
    classtype:trojan-activity;
    sid:2045806; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_05_22, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_07_13, reviewed_at 2024_03_11;
    target:src_ip;
)

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