{"id":"5f6a601c-2ecb-498b-9c33-660362323afa","title":"Root Certificate Installed From Susp Locations","description":"Adversaries may install a root certificate on a compromised system to avoid warnings when connecting to adversary controlled web servers.","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"high","date":"2022-09-09","modified":"2023-01-16","tags":["attack.defense-impairment","attack.t1553.004"],"technique_ids":["T1553.004"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unlikely"],"references":["https://www.microsoft.com/security/blog/2022/09/07/profiling-dev-0270-phosphorus-ransomware-operations/","https://learn.microsoft.com/en-us/powershell/module/pki/import-certificate?view=windowsserver2022-ps"],"source_path":"rules/windows/process_creation/proc_creation_win_powershell_import_cert_susp_locations.yml","source_sha256":"39f604125a72aa5ed5a30c6b2f9d05c05e9255b2800d076a66800d23931b81d6","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_powershell_import_cert_susp_locations.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Root Certificate Installed From Susp Locations\nid: 5f6a601c-2ecb-498b-9c33-660362323afa\nstatus: test\ndescription: Adversaries may install a root certificate on a compromised system to avoid warnings when connecting to adversary controlled web servers.\nreferences:\n    - https://www.microsoft.com/security/blog/2022/09/07/profiling-dev-0270-phosphorus-ransomware-operations/\n    - https://learn.microsoft.com/en-us/powershell/module/pki/import-certificate?view=windowsserver2022-ps\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2022-09-09\nmodified: 2023-01-16\ntags:\n    - attack.defense-impairment\n    - attack.t1553.004\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection:\n        CommandLine|contains|all:\n            - 'Import-Certificate'\n            - ' -FilePath '\n            - 'Cert:\\LocalMachine\\Root'\n        CommandLine|contains:\n            - '\\AppData\\Local\\Temp\\'\n            - ':\\Windows\\TEMP\\'\n            - '\\Desktop\\'\n            - '\\Downloads\\'\n            - '\\Perflogs\\'\n            - ':\\Users\\Public\\'\n    condition: selection\nfalsepositives:\n    - Unlikely\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1553.004","id":"T1553.004","name":"Install Root Certificate","page":"techniques/enterprise/T1553.004/"}],"data_path":"data/detection-rules/5f6a601c-2ecb-498b-9c33-660362323afa.json","kind":"sigma"}