{"id":"d9047477-0359-48c9-b8c7-792cedcdc9c4","title":"PUA - NirCmd Execution As LOCAL SYSTEM","description":"Detects the use of NirCmd tool for command execution as SYSTEM user","author":"Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"high","date":"2022-01-24","modified":"2023-02-13","tags":["attack.execution","attack.t1569.002","attack.s0029"],"technique_ids":["T1569.002"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Legitimate use by administrators"],"references":["https://www.nirsoft.net/utils/nircmd.html","https://www.winhelponline.com/blog/run-program-as-system-localsystem-account-windows/","https://www.nirsoft.net/utils/nircmd2.html#using"],"source_path":"rules/windows/process_creation/proc_creation_win_pua_nircmd_as_system.yml","source_sha256":"b5c3a775a842beefba88a49586ab88a55d42484d8c58233f82d7baa7dbdb319d","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_pua_nircmd_as_system.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: PUA - NirCmd Execution As LOCAL SYSTEM\nid: d9047477-0359-48c9-b8c7-792cedcdc9c4\nstatus: test\ndescription: Detects the use of NirCmd tool for command execution as SYSTEM user\nreferences:\n    - https://www.nirsoft.net/utils/nircmd.html\n    - https://www.winhelponline.com/blog/run-program-as-system-localsystem-account-windows/\n    - https://www.nirsoft.net/utils/nircmd2.html#using\nauthor: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)\ndate: 2022-01-24\nmodified: 2023-02-13\ntags:\n    - attack.execution\n    - attack.t1569.002\n    - attack.s0029\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection:\n        CommandLine|contains: ' runassystem '\n    condition: selection\nfalsepositives:\n    - Legitimate use by administrators\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1569.002","id":"T1569.002","name":"Service Execution","page":"techniques/enterprise/T1569.002/"}],"data_path":"data/detection-rules/d9047477-0359-48c9-b8c7-792cedcdc9c4.json","kind":"sigma"}