MediumSplunk security content Mauricio Velazco +1

Azure AD OAuth Application Consent Granted By User

Description

The following analytic detects when a user in an Azure AD environment grants consent to an OAuth application. It leverages Azure AD audit logs to identify events where users approve application consents. This activity is significant as it can expose organizational data to third-party applications, a common tactic used by malicious actors to gain unauthorized access. If confirmed malicious, this could lead to unauthorized access to sensitive information and resources. Immediate investigation is required to validate the application's legitimacy, review permissions, and mitigate potential risks.

Detection logic

Detection requirements

Platform: Containers IaaS Identity Provider Office Suite SaaS
The rule states no platform. This is derived from the ATT&CK technique it maps to.
Log source category: azure_active_directory_consent_to_application

Known benign triggers

False positives may occur if users are granting consents as part of legitimate application integrations or setups. It is crucial to review the application and the permissions it requests to ensure they align with organizational policies and security best practices.

References

Links the source published beside this detection. Reference is the link the source wrote, unmodified. Class is decided by this catalogue from the host and path, not stated by the source. Cited by counts published detections citing the same resource, including this one, and the sources beneath it count the repositories this catalogue ingests, which is not the same as independent research.
Reference	Class	Cited by
attack.mitre.org/techniques/T1528/	Taxonomy	9from 2 sources
github.com/AlteredSecurity/365-Stealer	Tool	8from 2 sources
learn.microsoft.com/en-us/azure/active-directory/manage-apps/protect-against-consent-phishing	Product documentation	6
learn.microsoft.com/en-us/defender-cloud-apps/investigate-risky-oauth	Product documentation	10from 2 sources
www.alteredsecurity.com/post/introduction-to-365-stealer	Unclassified	7
www.microsoft.com/en-us/security/blog/2022/09/22/malicious-oauth-applications-used-to-compromise-email-servers-and-spread-spam/	Threat report	8from 2 sources

Detection rules

Azure AD OAuth Application Consent Granted By User

Description

Detection logic

Detection requirements

Known benign triggers

MITRE ATT&CK mappings

References

From the source

Licence

Authorship

Detection rules