{"id":"c8a180d6-47a3-4345-a609-53f9c3d834fc","title":"Suspicious Reconnaissance Activity Using Get-LocalGroupMember Cmdlet","description":"Detects suspicious reconnaissance command line activity on Windows systems using the PowerShell Get-LocalGroupMember Cmdlet","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"medium","date":"2022-10-10","modified":"","tags":["attack.discovery","attack.t1087.001"],"technique_ids":["T1087.001"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Administrative activity"],"references":["https://www.absolomb.com/2018-01-26-Windows-Privilege-Escalation-Guide/"],"source_path":"rules/windows/process_creation/proc_creation_win_powershell_get_localgroup_member_recon.yml","source_sha256":"9d4012173d942d1f9b5b9f06ad90ccd049c295c26acdde9202657a029157afab","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_powershell_get_localgroup_member_recon.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Suspicious Reconnaissance Activity Using Get-LocalGroupMember Cmdlet\nid: c8a180d6-47a3-4345-a609-53f9c3d834fc\nrelated:\n    - id: cef24b90-dddc-4ae1-a09a-8764872f69fc\n      type: similar\nstatus: test\ndescription: Detects suspicious reconnaissance command line activity on Windows systems using the PowerShell Get-LocalGroupMember Cmdlet\nreferences:\n    - https://www.absolomb.com/2018-01-26-Windows-Privilege-Escalation-Guide/\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2022-10-10\ntags:\n    - attack.discovery\n    - attack.t1087.001\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    # Covers group and localgroup flags\n    selection_cmdlet:\n        CommandLine|contains: 'Get-LocalGroupMember '\n    selection_group:\n        CommandLine|contains:\n            # Add more groups for other languages\n            - 'domain admins'\n            - ' administrator' # Typo without an 'S' so we catch both\n            - ' administrateur' # Typo without an 'S' so we catch both\n            - 'enterprise admins'\n            - 'Exchange Trusted Subsystem'\n            - 'Remote Desktop Users'\n            - 'Utilisateurs du Bureau à distance' # French for \"Remote Desktop Users\"\n            - 'Usuarios de escritorio remoto' # Spanish for \"Remote Desktop Users\"\n    condition: all of selection_*\nfalsepositives:\n    - Administrative activity\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1087.001","id":"T1087.001","name":"Local Account","page":"techniques/enterprise/T1087.001/"}],"data_path":"data/detection-rules/c8a180d6-47a3-4345-a609-53f9c3d834fc.json","kind":"sigma"}