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;)