ET MALWARE Possible NGLite Backdoor C2 Traffic (NKN)

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|address|22 3a|";
content:"|2e|monitor_03|2e|"; within:20;
Raw source ET MALWARE Possible NGLite Backdoor C2 Traffic (NKN) · 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 30003 (
    msg:"ET MALWARE Possible NGLite Backdoor C2 Traffic (NKN)";
    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|address|22 3a|";
    content:"|2e|monitor_03|2e|"; within:20;
    reference:url,unit42.paloaltonetworks.com/manageengine-godzilla-nglite-kdcsponge/;
    reference:md5,aedebba95462e9db10b834551e3abc03;
    classtype:command-and-control;
    sid:2034438; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_11_11, deployment Perimeter, malware_family NGLite, confidence Medium, signature_severity Major, tag c2, updated_at 2022_05_03, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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