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DnsSystem - S1021 (8a2867f9-e8fc-4bf1-a860-ef6e46311900)

DnsSystem is a .NET based DNS backdoor, which is a customized version of the open source tool DIG.net, that has been used by HEXANE since at least June 2022.(Citation: Zscaler Lyceum DnsSystem June 2022)

Cluster A	Galaxy A	Cluster B	Galaxy B	Level
System Owner/User Discovery - T1033 (03d7999c-1f4c-42cc-8373-e7690d318104)	Attack Pattern	DnsSystem - S1021 (8a2867f9-e8fc-4bf1-a860-ef6e46311900)	Malware	1
DnsSystem - S1021 (8a2867f9-e8fc-4bf1-a860-ef6e46311900)	Malware	Registry Run Keys / Startup Folder - T1547.001 (9efb1ea7-c37b-4595-9640-b7680cd84279)	Attack Pattern	1
DnsSystem - S1021 (8a2867f9-e8fc-4bf1-a860-ef6e46311900)	Malware	DNS - T1071.004 (1996eef1-ced3-4d7f-bf94-33298cabbf72)	Attack Pattern	1
DnsSystem - S1021 (8a2867f9-e8fc-4bf1-a860-ef6e46311900)	Malware	Malicious File - T1204.002 (232b7f21-adf9-4b42-b936-b9d6f7df856e)	Attack Pattern	1
DnsSystem - S1021 (8a2867f9-e8fc-4bf1-a860-ef6e46311900)	Malware	Ingress Tool Transfer - T1105 (e6919abc-99f9-4c6c-95a5-14761e7b2add)	Attack Pattern	1
DnsSystem - S1021 (8a2867f9-e8fc-4bf1-a860-ef6e46311900)	Malware	Windows Command Shell - T1059.003 (d1fcf083-a721-4223-aedf-bf8960798d62)	Attack Pattern	1
DnsSystem - S1021 (8a2867f9-e8fc-4bf1-a860-ef6e46311900)	Malware	Standard Encoding - T1132.001 (04fd5427-79c7-44ea-ae13-11b24778ff1c)	Attack Pattern	1
DnsSystem - S1021 (8a2867f9-e8fc-4bf1-a860-ef6e46311900)	Malware	Data from Local System - T1005 (3c4a2599-71ee-4405-ba1e-0e28414b4bc5)	Attack Pattern	1
DnsSystem - S1021 (8a2867f9-e8fc-4bf1-a860-ef6e46311900)	Malware	Exfiltration Over C2 Channel - T1041 (92d7da27-2d91-488e-a00c-059dc162766d)	Attack Pattern	1
Registry Run Keys / Startup Folder - T1547.001 (9efb1ea7-c37b-4595-9640-b7680cd84279)	Attack Pattern	Boot or Logon Autostart Execution - T1547 (1ecb2399-e8ba-4f6b-8ba7-5c27d49405cf)	Attack Pattern	2
DNS - T1071.004 (1996eef1-ced3-4d7f-bf94-33298cabbf72)	Attack Pattern	Application Layer Protocol - T1071 (355be19c-ffc9-46d5-8d50-d6a036c675b6)	Attack Pattern	2
Malicious File - T1204.002 (232b7f21-adf9-4b42-b936-b9d6f7df856e)	Attack Pattern	User Execution - T1204 (8c32eb4d-805f-4fc5-bf60-c4d476c131b5)	Attack Pattern	2
Command and Scripting Interpreter - T1059 (7385dfaf-6886-4229-9ecd-6fd678040830)	Attack Pattern	Windows Command Shell - T1059.003 (d1fcf083-a721-4223-aedf-bf8960798d62)	Attack Pattern	2
Data Encoding - T1132 (cc7b8c4e-9be0-47ca-b0bb-83915ec3ee2f)	Attack Pattern	Standard Encoding - T1132.001 (04fd5427-79c7-44ea-ae13-11b24778ff1c)	Attack Pattern	2