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Samurai - S1099 (ae91fb8f-5031-4f57-9839-e3be3ed503f0)

Samurai is a passive backdoor that has been used by ToddyCat since at least 2020. Samurai allows arbitrary C# code execution and is used with multiple modules for remote administration and lateral movement.(Citation: Kaspersky ToddyCat June 2022)

Cluster A Galaxy A Cluster B Galaxy B Level
Symmetric Cryptography - T1573.001 (24bfaeba-cb0d-4525-b3dc-507c77ecec41) Attack Pattern Samurai - S1099 (ae91fb8f-5031-4f57-9839-e3be3ed503f0) Malware 1
Proxy - T1090 (731f4f55-b6d0-41d1-a7a9-072a66389aea) Attack Pattern Samurai - S1099 (ae91fb8f-5031-4f57-9839-e3be3ed503f0) Malware 1
Samurai - S1099 (ae91fb8f-5031-4f57-9839-e3be3ed503f0) Malware Dynamic API Resolution - T1027.007 (ea4c2f9c-9df1-477c-8c42-6da1118f2ac4) Attack Pattern 1
Windows Service - T1543.003 (2959d63f-73fd-46a1-abd2-109d7dcede32) Attack Pattern Samurai - S1099 (ae91fb8f-5031-4f57-9839-e3be3ed503f0) Malware 1
Modify Registry - T1112 (57340c81-c025-4189-8fa0-fc7ede51bae4) Attack Pattern Samurai - S1099 (ae91fb8f-5031-4f57-9839-e3be3ed503f0) Malware 1
File and Directory Discovery - T1083 (7bc57495-ea59-4380-be31-a64af124ef18) Attack Pattern Samurai - S1099 (ae91fb8f-5031-4f57-9839-e3be3ed503f0) Malware 1
Samurai - S1099 (ae91fb8f-5031-4f57-9839-e3be3ed503f0) Malware Ingress Tool Transfer - T1105 (e6919abc-99f9-4c6c-95a5-14761e7b2add) Attack Pattern 1
Samurai - S1099 (ae91fb8f-5031-4f57-9839-e3be3ed503f0) Malware Non-Application Layer Protocol - T1095 (c21d5a77-d422-4a69-acd7-2c53c1faa34b) Attack Pattern 1
Standard Encoding - T1132.001 (04fd5427-79c7-44ea-ae13-11b24778ff1c) Attack Pattern Samurai - S1099 (ae91fb8f-5031-4f57-9839-e3be3ed503f0) Malware 1
Native API - T1106 (391d824f-0ef1-47a0-b0ee-c59a75e27670) Attack Pattern Samurai - S1099 (ae91fb8f-5031-4f57-9839-e3be3ed503f0) Malware 1
Query Registry - T1012 (c32f7008-9fea-41f7-8366-5eb9b74bd896) Attack Pattern Samurai - S1099 (ae91fb8f-5031-4f57-9839-e3be3ed503f0) Malware 1
Samurai - S1099 (ae91fb8f-5031-4f57-9839-e3be3ed503f0) Malware Match Legitimate Name or Location - T1036.005 (1c4e5d32-1fe9-4116-9d9d-59e3925bd6a2) Attack Pattern 1
Compile After Delivery - T1027.004 (c726e0a2-a57a-4b7b-a973-d0f013246617) Attack Pattern Samurai - S1099 (ae91fb8f-5031-4f57-9839-e3be3ed503f0) Malware 1
Samurai - S1099 (ae91fb8f-5031-4f57-9839-e3be3ed503f0) Malware Web Protocols - T1071.001 (df8b2a25-8bdf-4856-953c-a04372b1c161) Attack Pattern 1
Data from Local System - T1005 (3c4a2599-71ee-4405-ba1e-0e28414b4bc5) Attack Pattern Samurai - S1099 (ae91fb8f-5031-4f57-9839-e3be3ed503f0) Malware 1
Obfuscated Files or Information - T1027 (b3d682b6-98f2-4fb0-aa3b-b4df007ca70a) Attack Pattern Samurai - S1099 (ae91fb8f-5031-4f57-9839-e3be3ed503f0) Malware 1
Windows Command Shell - T1059.003 (d1fcf083-a721-4223-aedf-bf8960798d62) Attack Pattern Samurai - S1099 (ae91fb8f-5031-4f57-9839-e3be3ed503f0) Malware 1
Samurai - S1099 (ae91fb8f-5031-4f57-9839-e3be3ed503f0) Malware Software Discovery - T1518 (e3b6daca-e963-4a69-aee6-ed4fd653ad58) Attack Pattern 1
Encrypted Channel - T1573 (b8902400-e6c5-4ba2-95aa-2d35b442b118) Attack Pattern Symmetric Cryptography - T1573.001 (24bfaeba-cb0d-4525-b3dc-507c77ecec41) Attack Pattern 2
Obfuscated Files or Information - T1027 (b3d682b6-98f2-4fb0-aa3b-b4df007ca70a) Attack Pattern Dynamic API Resolution - T1027.007 (ea4c2f9c-9df1-477c-8c42-6da1118f2ac4) Attack Pattern 2
Windows Service - T1543.003 (2959d63f-73fd-46a1-abd2-109d7dcede32) Attack Pattern Create or Modify System Process - T1543 (106c0cf6-bf73-4601-9aa8-0945c2715ec5) Attack Pattern 2
Standard Encoding - T1132.001 (04fd5427-79c7-44ea-ae13-11b24778ff1c) Attack Pattern Data Encoding - T1132 (cc7b8c4e-9be0-47ca-b0bb-83915ec3ee2f) Attack Pattern 2
Masquerading - T1036 (42e8de7b-37b2-4258-905a-6897815e58e0) Attack Pattern Match Legitimate Name or Location - T1036.005 (1c4e5d32-1fe9-4116-9d9d-59e3925bd6a2) Attack Pattern 2
Obfuscated Files or Information - T1027 (b3d682b6-98f2-4fb0-aa3b-b4df007ca70a) Attack Pattern Compile After Delivery - T1027.004 (c726e0a2-a57a-4b7b-a973-d0f013246617) Attack Pattern 2
Application Layer Protocol - T1071 (355be19c-ffc9-46d5-8d50-d6a036c675b6) Attack Pattern Web Protocols - T1071.001 (df8b2a25-8bdf-4856-953c-a04372b1c161) Attack Pattern 2
Windows Command Shell - T1059.003 (d1fcf083-a721-4223-aedf-bf8960798d62) Attack Pattern Command and Scripting Interpreter - T1059 (7385dfaf-6886-4229-9ecd-6fd678040830) Attack Pattern 2