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Azure DevOps PAT used with Browser

Description

'Personal Access Tokens (PATs) are used as an alternate password to authenticate into Azure DevOps. PATs are intended for programmatic access use in code or applications. This can be prone to attacker theft if not adequately secured. This query looks for the use of a PAT in authentication but from a User Agent indicating a browser. This should not be normal activity and could be an indicator of an attacker using a stolen PAT.'

Rule type: Scheduled
Version: 1.0.6
Declared status: Available
Query frequency: 1d
Query period: 1d
Trigger: gt 0

Declared MITRE coverage

CredentialAccess T1528

KQL query

Original query, unchanged.

ADOAuditLogs
| where AuthenticationMechanism startswith "PAT"
// Look for useragents that include a redenring engine
| where UserAgent has_any ("Gecko", "WebKit", "Presto", "Trident", "EdgeHTML", "Blink")
| extend AccountName = tostring(split(ActorUPN, "@")[0]), AccountUPNSuffix = tostring(split(ActorUPN, "@")[1])

Declared entities

AccountIP

Source provenance

GitHub

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

File: Solutions/AzureDevOpsAuditing/Analytic Rules/ADOPATUsedWithBrowser.yaml ↗
Commit: 9800e51 ↗
Source identifier: 5f0d80db-3415-4265-9d52-8466b7372e3a

Additional source files 3

Solutions/AzureDevOpsAuditing/Analytic Rules/ADOPATUsedWithBrowser.yamlsource ↗Detections/AzureDevOpsAuditing/ADOPATUsedWithBrowser.yamlmigration-note ↗Solutions/AzureDevOpsAuditing/Data/Solution_AzureDevOpsAuditing.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.