Suspicious Credential Added to Application or Service Principal in Entra ID (via azure)

ATT&CK techniques

Persistence → Lateral Movement

Recon
Resource Dev
Initial Access
Execution
Persistence
- T1098.001Additional Cloud Credentials
Priv Esc
- T1098.001Additional Cloud Credentials
Defense Evasion
- T1550.001Application Access Token
Cred Access
Discovery
Lateral Movement
- T1550.001Application Access Token
Collection
C2
Exfiltration
Impact

What it detects

This rule detects new password or certificate credentials being added to an Entra ID application or service principal, the persistence technique Silk Typhoon uses to abuse OAuth applications and service principals holding administrative permissions. Adversaries append their own secrets to trusted applications to authenticate as the app and access mail, OneDrive, and SharePoint through MSGraph, so unexpected credential additions signal a supply-chain identity compromise.

Reporting behind it

Related detections9 linkedT1550.001 — drag to rearrange

Suspicious Federated Identity Credential On-Behalf-Of Token Flow via Sign-In Logs

Suspicious Credential Addition to Entra Application via Azure Audit Logs

Suspicious Salesforce Bulk API Export via aiohttp User Agent

Suspicious Entra Sign-In With Axios Automation User-Agent via AiTM Token Replay (via azure)

Malicious Azure AD Token Abuse via Roadtx

Suspicious M365 Sign-In from Synthetic iPhone User Agent via m365

Possible Illicit Consent Grant to OAuth Application via Azure AD

Suspicious Google Workspace OAuthLogin From Node.js Client via Tycoon 2FA

Suspicious IAM Persistence and Privilege Escalation Actions

Suspicious Credential Added to Application or Service Principal in Entra ID (via azure)

Pivot detection · T1550.001 · 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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