{"id":"74a12f18-505c-4114-8d0b-8448dd5485c6","title":"PUA - Nimgrab Execution","description":"Detects the usage of nimgrab, a tool bundled with the Nim programming framework and used for downloading files.","author":"frack113","status":"test","level":"high","date":"2022-08-28","modified":"2024-11-23","tags":["attack.command-and-control","attack.t1105"],"technique_ids":["T1105"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Legitimate use of Nim on a developer systems"],"references":["https://github.com/redcanaryco/atomic-red-team/blob/28d190330fe44de6ff4767fc400cc10fa7cd6540/atomics/T1105/T1105.md"],"source_path":"rules/windows/process_creation/proc_creation_win_pua_nimgrab.yml","source_sha256":"315b5209d2577325a2e083aea199d25fc0472161b8e26ab94abb745dfad4cf6b","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_pua_nimgrab.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 - Nimgrab Execution\nid: 74a12f18-505c-4114-8d0b-8448dd5485c6\nstatus: test\ndescription: Detects the usage of nimgrab, a tool bundled with the Nim programming framework and used for downloading files.\nreferences:\n    - https://github.com/redcanaryco/atomic-red-team/blob/28d190330fe44de6ff4767fc400cc10fa7cd6540/atomics/T1105/T1105.md\nauthor: frack113\ndate: 2022-08-28\nmodified: 2024-11-23\ntags:\n    - attack.command-and-control\n    - attack.t1105\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_name:\n        Image|endswith: '\\nimgrab.exe'\n    selection_hashes:\n        Hashes|contains:\n            - MD5=2DD44C3C29D667F5C0EF5F9D7C7FFB8B\n            - SHA256=F266609E91985F0FE3E31C5E8FAEEEC4FFA5E0322D8B6F15FE69F4C5165B9559\n            - IMPHASH=C07FDDD21D123EA9B3A08EEF44AAAC45\n    condition: 1 of selection_*\nfalsepositives:\n    - Legitimate use of Nim on a developer systems\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1105","id":"T1105","name":"Ingress Tool Transfer","page":"techniques/enterprise/T1105/"}],"data_path":"data/detection-rules/74a12f18-505c-4114-8d0b-8448dd5485c6.json","kind":"sigma"}