{"id":"264982dc-dbad-4dce-b707-1e0d3e0f73d9","title":"Renamed NirCmd.EXE Execution","description":"Detects the execution of a renamed \"NirCmd.exe\" binary based on the PE metadata fields.","author":"X__Junior (Nextron Systems)","status":"test","level":"high","date":"2024-03-11","modified":"","tags":["attack.execution","attack.stealth","attack.t1059","attack.t1202"],"technique_ids":["T1059","T1202"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://www.microsoft.com/en-us/security/blog/2024/01/17/new-ttps-observed-in-mint-sandstorm-campaign-targeting-high-profile-individuals-at-universities-and-research-orgs/","https://www.nirsoft.net/utils/nircmd.html"],"source_path":"rules/windows/process_creation/proc_creation_win_renamed_nircmd.yml","source_sha256":"a38606f06612030cd96836e9b5626a60002168f22f08879bddf636a6874cf73f","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_renamed_nircmd.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Renamed NirCmd.EXE Execution\nid: 264982dc-dbad-4dce-b707-1e0d3e0f73d9\nstatus: test\ndescription: Detects the execution of a renamed \"NirCmd.exe\" binary based on the PE metadata fields.\nreferences:\n    - https://www.microsoft.com/en-us/security/blog/2024/01/17/new-ttps-observed-in-mint-sandstorm-campaign-targeting-high-profile-individuals-at-universities-and-research-orgs/\n    - https://www.nirsoft.net/utils/nircmd.html\nauthor: X__Junior (Nextron Systems)\ndate: 2024-03-11\ntags:\n    - attack.execution\n    - attack.stealth\n    - attack.t1059\n    - attack.t1202\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection:\n        OriginalFileName: 'NirCmd.exe'\n    filter_main_img:\n        Image|endswith:\n            - '\\nircmd.exe'\n            - '\\nircmdc.exe'\n    condition: selection and not 1 of filter_main_*\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1059","id":"T1059","name":"Command and Scripting Interpreter","page":"techniques/enterprise/T1059/"},{"key":"enterprise/T1202","id":"T1202","name":"Indirect Command Execution","page":"techniques/enterprise/T1202/"}],"data_path":"data/detection-rules/264982dc-dbad-4dce-b707-1e0d3e0f73d9.json","kind":"sigma"}