Suspicious OAuth Application Consent Grant via Azure Audit Logs

ATT&CK techniques

Initial Access → Cred Access

Recon
Resource Dev
Initial Access
- T1566.002Spearphishing Link
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
- T1528Steal Application Access Token
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects user or admin consent granted to an OAuth application in Entra ID, the pivot point in illicit consent phishing campaigns where victims authorize attacker-controlled apps requesting sensitive Graph permissions. Adversaries use consented apps to read mail and files and to establish durable API access that survives password resets, so unexpected consent events warrant review.

Reporting behind it

Related detections9 linkedT1528 — drag to rearrange

Suspicious M365 Device Code Authentication Flow via m365

Suspicious Entra Device Code Authentication with Office Client and Automated User Agent

Suspicious OWA Proxy User-Agent Indicating Mailbox Access

Suspicious Anonymous Sharing Link Creation in SharePoint or OneDrive via M365 Audit

Suspicious OAuth Application Consent Granted High Privilege Mail Scopes (via m365)

Suspicious Token Request Using Microsoft Authentication Broker Client to Obtain Primary Refresh Token (via azure)

Suspicious Salesforce Connected App OAuth Authorization from VPN Egress

Suspicious Screensaver File Executed as Installer via process_creation

Possible Illicit Consent Grant to OAuth Application via Azure AD

Suspicious OAuth Application Consent Grant via Azure Audit Logs

Pivot detection · T1528 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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