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Trusted Developer Utilities Proxy Execution

Description

This detection looks at process executions - in some cases with specific command line attributes to filter a lot of common noise.
Rule type
Scheduled
Version
1.0.0
Declared status
Available
Query frequency
1h
Query period
1h
Trigger
gt 0

Declared MITRE coverage

Declared sources

Metadata from the source file. No dependencies inferred from KQL.

Connectors

Data types

KQL query

Original query, unchanged.

let Timeframe = 1h;
DeviceProcessEvents
| where Timestamp > ago(Timeframe)
| where (FileName has_any ("msbuild.exe", "msxsl.exe")
or (FileName has_any ("vbc.exe","csc.exe","jsc.exe") and ProcessCommandLine has_any ("/exe","/dll","/pe64","-exe","-dll","-pe64"))
or (FileName == ("ilsasm.exe") and ProcessCommandLine has_any ("out","target","t:","reference","r:")))
// Filter initations by Visual Studio since this is expected behavior.
  and not(FolderPath startswith "C:\\Program Files (x86)\\Microsoft Visual Studio" 
  or InitiatingProcessFolderPath startswith "C:\\Program Files (x86)\\Microsoft Visual Studio" 
  and (InitiatingProcessFileName == "devenv.exe" or InitiatingProcessFileName == "WDExpress.exe"))

Declared entities

HostAccountProcess

Related content

Links established from declared identifiers and solution manifests.

Source provenance

GitHub

Displayed values come from files in Azure/Azure-Sentinel. They describe the published template, not your workspace configuration.

Source identifier
5c2bb446-926f-4160-a233-21e335c2c290
Additional source files 2Solutions/FalconFriday/Analytic Rules/TrustedDeveloperUtilitiesProxyExecution.yamlsource ↗Solutions/FalconFriday/Data/Solution_FalconFriday.jsonsolution-membership ↗
GSTEP / CATALOG TRACKING

Added to catalog : 16 Sept 2026 · 05:49 UTC
Last change observed : 16 Sept 2026 · 05:49 UTC

GSTEP sync dates, separate from the source content’s publication dates.