ET HUNTING GET Request to Minecraft Java Edition Port with Custom X-Header

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.header;
content:"X-Meta-Bitcode-Magic|3a 20|"; fast_pattern;
http.host.raw;
content:"|3a|25565"; endswith;
Raw source ET HUNTING GET Request to Minecraft Java Edition Port with Custom X-Header · 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 HUNTING GET Request to Minecraft Java Edition Port with Custom X-Header";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.header;
    content:"X-Meta-Bitcode-Magic|3a 20|"; fast_pattern;
    http.host.raw;
    content:"|3a|25565"; endswith;
    classtype:bad-unknown;
    sid:2071782; rev:1;
    metadata:affected_product Windows_11, affected_product Windows_8, affected_product Windows_10, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_08_24, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Minor, tag Java, tag Minecraft, updated_at 2026_08_24, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
)

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