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Identifies certutil.exe or cmd.exe spawned by explorer.exe with download or decode flags, consistent with BadUSB HID injection payloads that use WIN+R to invoke certutil as a living-off-the-land binary. The explorer.exe parent distinguishes Run dialog execution from scripted or interactive certutil use. Covers urlcache download and base64 decode paths.
| Attribute | Value |
|---|---|
| Type | Hunting Query |
| Solution | GitHub Only |
| ID | d71e736b-f6e7-4acb-86f5-3696041868d7 |
| Tactics | InitialAccess, DefenseEvasion, CommandAndControl |
| Techniques | T1200, T1027, T1105 |
| Required Connectors | MicrosoftThreatProtection |
| Source | [View on GitHub](https://github.com/Azure/Azure-Sentinel/blob/master/Hunting Queries/MultipleDataSources/BadUSBCertutilLOLBIN.yaml) |
This content item queries data from the following tables:
| Table | Selection Criteria | Transformations | Ingestion API | Lake-Only |
|---|---|---|---|---|
DeviceProcessEvents |
InitiatingProcessFileName == "explorer.exe"ProcessCommandLine has "certutil" |
✓ | ✗ | ? |
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