Azure SAML Token Issuer Anomaly via riskdetection
Flags Azure risk events where a SAML token’s issuer and claims look anomalous or attacker-like.
FreeReviewedSigma · High · v5
- Product
- azure
- Service
- riskdetection
- Author
- Mark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo' (SigmaHQ), DRL 1.1
- Published
- 2023-09-03
- Updated
- 2026-07-31
ATT&CK techniques
Cred AccessRecon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
What it detects
This rule flags Azure risk events where a SAML token issuer anomaly is reported. It indicates the SAML token’s issuer may be compromised, typically when the included claims are unusual or resemble known attacker-like patterns. The detection relies on the riskdetection telemetry event type tokenIssuerAnomaly in Azure.
Reporting behind it
- learn.microsoft.comhttps://learn.microsoft.com/en-us/entra/id-protection/concept-identity-protection-risks#token-issuer-anomaly
- learn.microsoft.comhttps://learn.microsoft.com/en-us/entra/architecture/security-operations-user-accounts#unusual-sign-ins
- github.comhttps://github.com/SigmaHQ/sigma/blob/master/rules/cloud/azure/identity_protection/azure_identity_protection_token_issuer_anomaly.yml
Changelog
v5- v5Candidate ingested via manual entry.2026-07-31
- v4Candidate ingested via manual entry.2026-07-31
- v3Candidate ingested via manual entry.2026-07-31
- v2Candidate ingested via manual entry.2026-07-31
- v1No changelog recorded for this version.2026-07-30
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.
azure-saml-token-issuer-anomaly-risk-event-e3393cba
title: Azure SAML Token Issuer Anomaly via riskdetection
id: feb78988-c855-4963-a145-5f77680d682b
status: test
description: This rule flags Azure risk events where a SAML token issuer anomaly is reported. It indicates the SAML token’s issuer may be compromised, typically when the included claims are unusual or resemble known attacker-like patterns. The detection relies on the riskdetection telemetry event type tokenIssuerAnomaly in Azure.
references:
- https://learn.microsoft.com/en-us/entra/id-protection/concept-identity-protection-risks#token-issuer-anomaly
- https://learn.microsoft.com/en-us/entra/architecture/security-operations-user-accounts#unusual-sign-ins
- https://github.com/SigmaHQ/sigma/blob/master/rules/cloud/azure/identity_protection/azure_identity_protection_token_issuer_anomaly.yml
author: Mark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo', Huntrule Team
date: 2023-09-03
tags:
- attack.t1606
- attack.credential-access
logsource:
product: azure
service: riskdetection
detection:
selection:
riskEventType: tokenIssuerAnomaly
condition: selection
falsepositives:
- We recommend investigating the sessions flagged by this detection in the context of other sign-ins from the user.
level: high
license: DRL-1.1
related:
- id: e3393cba-31f0-4207-831e-aef90ab17a8c
type: derived