{"id":"87911521-7098-470b-a459-9a57fc80bdfd","title":"Sysmon Configuration Update","description":"Detects updates to Sysmon's configuration. Attackers might update or replace the Sysmon configuration with a bare bone one to avoid monitoring without shutting down the service completely","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"medium","date":"2023-03-09","modified":"2024-03-13","tags":["attack.defense-impairment","attack.t1685"],"technique_ids":["T1685"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Legitimate administrators might use this command to update Sysmon configuration."],"references":["https://learn.microsoft.com/en-us/sysinternals/downloads/sysmon"],"source_path":"rules/windows/process_creation/proc_creation_win_sysinternals_sysmon_config_update.yml","source_sha256":"c4488d303d6191a77aca8795824f95764a4dacbf8a89254785e95893a6142fb8","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_sysinternals_sysmon_config_update.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Sysmon Configuration Update\nid: 87911521-7098-470b-a459-9a57fc80bdfd\nstatus: test\ndescription: Detects updates to Sysmon's configuration. Attackers might update or replace the Sysmon configuration with a bare bone one to avoid monitoring without shutting down the service completely\nreferences:\n    - https://learn.microsoft.com/en-us/sysinternals/downloads/sysmon\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2023-03-09\nmodified: 2024-03-13\ntags:\n    - attack.defense-impairment\n    - attack.t1685\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_pe:\n        - Image|endswith:\n              - \\Sysmon64.exe\n              - \\Sysmon.exe\n        - Description: 'System activity monitor'\n    selection_cli:\n        CommandLine|contains|windash: '-c'\n    condition: all of selection_*\nfalsepositives:\n    - Legitimate administrators might use this command to update Sysmon configuration.\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1685","id":"T1685","name":"Disable or Modify Tools","page":"techniques/enterprise/T1685/"}],"data_path":"data/detection-rules/87911521-7098-470b-a459-9a57fc80bdfd.json","kind":"sigma"}