{"id":"ec570e53-4c76-45a9-804d-dc3f355ff7a7","title":"7Zip Compressing Dump Files","description":"Detects execution of 7z in order to compress a file with a \".dmp\"/\".dump\" extension, which could be a step in a process of dump file exfiltration.","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"medium","date":"2022-09-27","modified":"2026-06-05","tags":["attack.collection","attack.t1560.001"],"technique_ids":["T1560.001"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Legitimate use of 7z with a command line in which \".dmp\" or \".dump\" appears accidentally","Legitimate use of 7z to compress WER \".dmp\" files for troubleshooting"],"references":["https://thedfirreport.com/2022/09/26/bumblebee-round-two/"],"source_path":"rules/windows/process_creation/proc_creation_win_7zip_exfil_dmp_files.yml","source_sha256":"bc099a1a8b01dfd98ed647c388ca43ce7913f5e837db41611379e705d9359cc6","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_7zip_exfil_dmp_files.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: 7Zip Compressing Dump Files\nid: ec570e53-4c76-45a9-804d-dc3f355ff7a7\nrelated:\n    - id: 1ac14d38-3dfc-4635-92c7-e3fd1c5f5bfc\n      type: derived\nstatus: test\ndescription: Detects execution of 7z in order to compress a file with a \".dmp\"/\".dump\" extension, which could be a step in a process of dump file exfiltration.\nreferences:\n    - https://thedfirreport.com/2022/09/26/bumblebee-round-two/\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2022-09-27\nmodified: 2026-06-05\ntags:\n    - attack.collection\n    - attack.t1560.001\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_img:\n        - Description|contains: '7-Zip'\n        - Image|endswith:\n              - '\\7z.exe'\n              - '\\7zr.exe'\n              - '\\7za.exe'\n        - OriginalFileName:\n              - '7z.exe'\n              - '7za.exe'\n              - '7zr.exe'\n    selection_extension:\n        CommandLine|contains:\n            - '.dmp'\n            - '.dump'\n            - '.hdmp'\n    condition: all of selection_*\nfalsepositives:\n    - Legitimate use of 7z with a command line in which \".dmp\" or \".dump\" appears accidentally\n    - Legitimate use of 7z to compress WER \".dmp\" files for troubleshooting\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1560.001","id":"T1560.001","name":"Archive via Utility","page":"techniques/enterprise/T1560.001/"}],"data_path":"data/detection-rules/ec570e53-4c76-45a9-804d-dc3f355ff7a7.json","kind":"sigma"}