{"id":"cb7c4a03-2871-43c0-9bbb-18bbdb079896","title":"Unmount Share Via Net.EXE","description":"Detects when when a mounted share is removed. Adversaries may remove share connections that are no longer useful in order to clean up traces of their operation","author":"oscd.community, @redcanary, Zach Stanford @svch0st","status":"test","level":"low","date":"2020-10-08","modified":"2023-02-21","tags":["attack.stealth","attack.t1070.005"],"technique_ids":["T1070.005"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Administrators or Power users may remove their shares via cmd line"],"references":["https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.005/T1070.005.md"],"source_path":"rules/windows/process_creation/proc_creation_win_net_share_unmount.yml","source_sha256":"7da867e3d7644428bb6af65906aedb42cc090078ecaab1cb5deb3e25b611cc61","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_net_share_unmount.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Unmount Share Via Net.EXE\nid: cb7c4a03-2871-43c0-9bbb-18bbdb079896\nstatus: test\ndescription: Detects when when a mounted share is removed. Adversaries may remove share connections that are no longer useful in order to clean up traces of their operation\nreferences:\n    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.005/T1070.005.md\nauthor: oscd.community, @redcanary, Zach Stanford @svch0st\ndate: 2020-10-08\nmodified: 2023-02-21\ntags:\n    - attack.stealth\n    - attack.t1070.005\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_img:\n        - Image|endswith:\n              - '\\net.exe'\n              - '\\net1.exe'\n        - OriginalFileName:\n              - 'net.exe'\n              - 'net1.exe'\n    selection_cli:\n        CommandLine|contains|all:\n            - 'share'\n            - '/delete'\n    condition: all of selection*\nfalsepositives:\n    - Administrators or Power users may remove their shares via cmd line\nlevel: low\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1070.005","id":"T1070.005","name":"Network Share Connection Removal","page":"techniques/enterprise/T1070.005/"}],"data_path":"data/detection-rules/cb7c4a03-2871-43c0-9bbb-18bbdb079896.json","kind":"sigma"}