{"id":"44143844-0631-49ab-97a0-96387d6b2d7c","title":"File Download Using Notepad++ GUP Utility","description":"Detects execution of the Notepad++ updater (gup) from a process other than Notepad++ to download files.","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"high","date":"2022-06-10","modified":"2023-03-02","tags":["attack.command-and-control","attack.t1105"],"technique_ids":["T1105"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Other parent processes other than notepad++ using GUP that are not currently identified"],"references":["https://twitter.com/nas_bench/status/1535322182863179776"],"source_path":"rules/windows/process_creation/proc_creation_win_gup_download.yml","source_sha256":"0f909be6ab9d8a300300f7460003e9bc5139dc02248960befe20771d2fa5d760","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_gup_download.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: File Download Using Notepad++ GUP Utility\nid: 44143844-0631-49ab-97a0-96387d6b2d7c\nstatus: test\ndescription: Detects execution of the Notepad++ updater (gup) from a process other than Notepad++ to download files.\nreferences:\n    - https://twitter.com/nas_bench/status/1535322182863179776\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2022-06-10\nmodified: 2023-03-02\ntags:\n    - attack.command-and-control\n    - attack.t1105\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_img:\n        - Image|endswith: '\\GUP.exe'\n        - OriginalFileName: 'gup.exe'\n    selection_cli:\n        CommandLine|contains|all:\n            - ' -unzipTo '\n            - 'http'\n    filter:\n        ParentImage|endswith: '\\notepad++.exe'\n    condition: all of selection* and not filter\nfalsepositives:\n    - Other parent processes other than notepad++ using GUP that are not currently identified\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/44143844-0631-49ab-97a0-96387d6b2d7c.json","kind":"sigma"}