{"id":"ffa28e60-bdb1-46e0-9f82-05f7a61cc06e","title":"User Added to Remote Desktop Users Group","description":"Detects addition of users to the local Remote Desktop Users group via \"Net\" or \"Add-LocalGroupMember\".","author":"Florian Roth (Nextron Systems)","status":"test","level":"high","date":"2021-12-06","modified":"2022-09-09","tags":["attack.initial-access","attack.persistence","attack.lateral-movement","attack.t1133","attack.t1136.001","attack.t1021.001"],"technique_ids":["T1021.001","T1133","T1136.001"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Administrative activity"],"references":["https://www.microsoft.com/security/blog/2021/11/16/evolving-trends-in-iranian-threat-actor-activity-mstic-presentation-at-cyberwarcon-2021/"],"source_path":"rules/windows/process_creation/proc_creation_win_susp_add_user_remote_desktop_group.yml","source_sha256":"b775149c19ee7df8e80b03f6e36d1a4b25dcc1fcf84143e245a983f0620a63b9","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_susp_add_user_remote_desktop_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 Remote Desktop Users Group\nid: ffa28e60-bdb1-46e0-9f82-05f7a61cc06e\nrelated:\n    - id: ad720b90-25ad-43ff-9b5e-5c841facc8e5 # Admin groups\n      type: similar\n    - id: 10fb649c-3600-4d37-b1e6-56ea90bb7e09 # Privileged groups\n      type: similar\nstatus: test\ndescription: Detects addition of users to the local Remote Desktop Users group via \"Net\" or \"Add-LocalGroupMember\".\nreferences:\n    - https://www.microsoft.com/security/blog/2021/11/16/evolving-trends-in-iranian-threat-actor-activity-mstic-presentation-at-cyberwarcon-2021/\nauthor: Florian Roth (Nextron Systems)\ndate: 2021-12-06\nmodified: 2022-09-09\ntags:\n    - attack.initial-access\n    - attack.persistence\n    - attack.lateral-movement\n    - attack.t1133\n    - attack.t1136.001\n    - attack.t1021.001\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_main:\n        - CommandLine|contains|all:\n              - 'localgroup '\n              - ' /add'\n        - CommandLine|contains|all:\n              - 'Add-LocalGroupMember '\n              - ' -Group '\n    selection_group:\n        CommandLine|contains:\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: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1021.001","id":"T1021.001","name":"Remote Desktop Protocol","page":"techniques/enterprise/T1021.001/"},{"key":"enterprise/T1133","id":"T1133","name":"External Remote Services","page":"techniques/enterprise/T1133/"},{"key":"enterprise/T1136.001","id":"T1136.001","name":"Local Account","page":"techniques/enterprise/T1136.001/"}],"data_path":"data/detection-rules/ffa28e60-bdb1-46e0-9f82-05f7a61cc06e.json","kind":"sigma"}