{"id":"459f2f98-397b-4a4a-9f47-6a5ec2f1c69d","title":"Arbitrary File Download Via MSOHTMED.EXE","description":"Detects usage of \"MSOHTMED\" to download arbitrary files","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"medium","date":"2022-08-19","modified":"2023-11-09","tags":["attack.execution","attack.stealth","attack.t1218"],"technique_ids":["T1218"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://github.com/LOLBAS-Project/LOLBAS/pull/238/files"],"source_path":"rules/windows/process_creation/proc_creation_win_msohtmed_download.yml","source_sha256":"bac6a04d85ce0e57e7fd3d4b09c50312e745e8f2e7077c18bece985ea5459022","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_msohtmed_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: Arbitrary File Download Via MSOHTMED.EXE\nid: 459f2f98-397b-4a4a-9f47-6a5ec2f1c69d\nstatus: test\ndescription: Detects usage of \"MSOHTMED\" to download arbitrary files\nreferences:\n    - https://github.com/LOLBAS-Project/LOLBAS/pull/238/files\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2022-08-19\nmodified: 2023-11-09\ntags:\n    - attack.execution\n    - attack.stealth\n    - attack.t1218\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_img:\n        - Image|endswith: '\\MSOHTMED.exe'\n        - OriginalFileName: 'MsoHtmEd.exe'\n    selection_cli:\n        CommandLine|contains:\n            - 'ftp://'\n            - 'http://'\n            - 'https://'\n    condition: all of selection_*\nfalsepositives:\n    - Unknown\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1218","id":"T1218","name":"System Binary Proxy Execution","page":"techniques/enterprise/T1218/"}],"data_path":"data/detection-rules/459f2f98-397b-4a4a-9f47-6a5ec2f1c69d.json","kind":"sigma"}