Hayabusa medium test sigma

Dism Remove Online Package

Deployment Image Servicing and Management tool. DISM is used to enumerate, install, uninstall, configure, and update features and packages in Windows images

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Detection Logic

{
  "process_creation": {
    "EventID": 4688,
    "Channel": "Security"
  },
  "selection_dismhost": {
    "ParentCommandLine
| contains
| all": [
      "/Online",
      "/Disable-Feature"
    ],
    "NewProcessName
| endswith": "\\DismHost.exe"
  },
  "selection_dism": {
    "CommandLine
| contains
| all": [
      "/Online",
      "/Disable-Feature"
    ],
    "NewProcessName
| endswith": "\\Dism.exe"
  },
  "condition": "process_creation and (1 of selection_*)"
}

False Positives

  • ⚠ Legitimate script

Field Validations

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