{"id":"10fb649c-3600-4d37-b1e6-56ea90bb7e09","title":"User Added To Highly Privileged Group","description":"Detects addition of users to highly privileged groups via \"Net\" or \"Add-LocalGroupMember\".","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"high","date":"2024-02-23","modified":"","tags":["attack.privilege-escalation","attack.persistence","attack.t1098"],"technique_ids":["T1098"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Administrative activity that must be investigated"],"references":["https://www.huntress.com/blog/slashandgrab-screen-connect-post-exploitation-in-the-wild-cve-2024-1709-cve-2024-1708"],"source_path":"rules/windows/process_creation/proc_creation_win_susp_add_user_privileged_group.yml","source_sha256":"3e45f31f4814c8405816c848cbf9b98d3b8186300f3dea6870e3aa83ccccd219","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_susp_add_user_privileged_group.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: User Added To Highly Privileged Group\nid: 10fb649c-3600-4d37-b1e6-56ea90bb7e09 # Privileged groups\nrelated:\n    - id: ffa28e60-bdb1-46e0-9f82-05f7a61cc06e # Remote Desktop groups\n      type: similar\n    - id: ad720b90-25ad-43ff-9b5e-5c841facc8e5 # Admin groups\n      type: similar\nstatus: test\ndescription: Detects addition of users to highly privileged groups via \"Net\" or \"Add-LocalGroupMember\".\nreferences:\n    - https://www.huntress.com/blog/slashandgrab-screen-connect-post-exploitation-in-the-wild-cve-2024-1709-cve-2024-1708\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2024-02-23\ntags:\n    - attack.privilege-escalation\n    - attack.persistence\n    - attack.t1098\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_main:\n        - CommandLine|contains|all:\n              # net.exe\n              - 'localgroup '\n              - ' /add'\n        - CommandLine|contains|all:\n              # powershell.exe\n              - 'Add-LocalGroupMember '\n              - ' -Group '\n    selection_group:\n        CommandLine|contains:\n            - 'Group Policy Creator Owners'\n            - 'Schema Admins'\n    condition: all of selection_*\nfalsepositives:\n    - Administrative activity that must be investigated\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1098","id":"T1098","name":"Account Manipulation","page":"techniques/enterprise/T1098/"}],"data_path":"data/detection-rules/10fb649c-3600-4d37-b1e6-56ea90bb7e09.json","kind":"sigma"}