Suspicious Azure AD Authentication Method Registration for Account Takeover (via azure)

ATT&CK techniques

Persistence → Cred Access

Recon
Resource Dev
Initial Access
Execution
Persistence
- T1098Account Manipulation
- T1556.006Multi-Factor Authentication
Priv Esc
- T1098Account Manipulation
Defense Evasion
- T1556.006Multi-Factor Authentication
Cred Access
- T1556.006Multi-Factor Authentication
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects registration or update of a security info authentication method in Azure AD Entra ID, the account-takeover step used by the Payroll Pirates after help-desk social engineering. Attackers add an attacker-controlled email or MFA device as an authentication method on service and employee accounts to seize persistent access and alter direct-deposit details.

Reporting behind it

Related detections9 linkedT1098 — drag to rearrange

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Suspicious Domain Admins Group Membership Addition via Net (via process_creation)

Malicious Account Added to Domain Admins via net localgroup

Suspicious Azure Key Vault Access Policy Modification

Suspicious Azure AD Authentication Method Registration for Account Takeover (via azure)

Pivot detection · T1098 · 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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