{"id":"ada4b0c4-758b-46ac-9033-9004613a150d","title":"Modify Group Policy Settings","description":"Detect malicious GPO modifications can be used to implement many other malicious behaviors.","author":"frack113","status":"test","level":"medium","date":"2022-08-19","modified":"","tags":["attack.privilege-escalation","attack.defense-impairment","attack.t1484.001"],"technique_ids":["T1484.001"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Legitimate use"],"references":["https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1484.001/T1484.001.md"],"source_path":"rules/windows/process_creation/proc_creation_win_reg_modify_group_policy_settings.yml","source_sha256":"37c8ea57d92a5bab98b82432b5b6f366118a5991c12035b9cc91d38588c520eb","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_reg_modify_group_policy_settings.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Modify Group Policy Settings\nid: ada4b0c4-758b-46ac-9033-9004613a150d\nrelated:\n    - id: b7216a7d-687e-4c8d-82b1-3080b2ad961f\n      type: similar\nstatus: test\ndescription: Detect malicious GPO modifications can be used to implement many other malicious behaviors.\nreferences:\n    - https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1484.001/T1484.001.md\nauthor: frack113\ndate: 2022-08-19\ntags:\n    - attack.privilege-escalation\n    - attack.defense-impairment\n    - attack.t1484.001\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_reg:\n        - Image|endswith: '\\reg.exe'\n        - OriginalFileName: 'reg.exe'\n    selection_path:\n        CommandLine|contains: '\\SOFTWARE\\Policies\\Microsoft\\Windows\\System'\n    selection_key:\n        CommandLine|contains:\n            - GroupPolicyRefreshTimeDC\n            - GroupPolicyRefreshTimeOffsetDC\n            - GroupPolicyRefreshTime\n            - GroupPolicyRefreshTimeOffset\n            - EnableSmartScreen\n            - ShellSmartScreenLevel\n    condition: all of selection_*\nfalsepositives:\n    - Legitimate use\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1484.001","id":"T1484.001","name":"Group Policy Modification","page":"techniques/enterprise/T1484.001/"}],"data_path":"data/detection-rules/ada4b0c4-758b-46ac-9033-9004613a150d.json","kind":"sigma"}