ET INFO Observed Initial New Kind of Network (NKN) POST Request

Query · suricata

flow:established,to_server;
http.request_line;
content:"POST|20|/|20|HTTP/1.1";
http.host.raw;
content:"seed.nkn.org|3a|"; startswith; fast_pattern;
http.user_agent;
content:"Go-http-client/"; startswith;
http.request_body;
content:"{|22|id|22 3a 22|";
Raw source ET INFO Observed Initial New Kind of Network (NKN) POST Request · Suricata
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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 30003 (
    msg:"ET INFO Observed Initial New Kind of Network (NKN) POST Request";
    flow:established,to_server;
    http.request_line;
    content:"POST|20|/|20|HTTP/1.1";
    http.host.raw;
    content:"seed.nkn.org|3a|"; startswith; fast_pattern;
    http.user_agent;
    content:"Go-http-client/"; startswith;
    http.request_body;
    content:"{|22|id|22 3a 22|";
    reference:md5,aedebba95462e9db10b834551e3abc03;
    reference:url,nkn.org;
    classtype:misc-activity;
    sid:2034414; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_11_10, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Web3, updated_at 2023_05_02;
)

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