Suspicious MFA request reported by user in Entra ID

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	1 Day
Required Data	AzureAD Audit Log
Detection Modules	Identity Threat Module, SaaS Threat Detection
ATT&CK Tactic	Persistence (TA0003), Initial Access (TA0001)
ATT&CK Technique	Valid Accounts (T1078)
Severity	Informational

Description

A user has flagged an MFA request as suspicious in Microsoft Entra ID. This could indicate a potential compromised user account or unauthorized access attempt.

Attacker's Goals

• An attacker may attempt to gain unauthorized access to the account.

Investigative actions

• Check if the authentication attempt was legitimate.
• Investigate any recent unusual login behavior or IP addresses associated with the account.
• Verify whether the user has recently changed their authentication methods or account settings.
• Follow the account for possible suspicious or unusual logins.

Variations

Suspicious MFA request reported by a sensitive user in Entra ID

Synopsis

Field	Value
ATT&CK Tactic	Persistence (TA0003), Initial Access (TA0001)
ATT&CK Technique	Valid Accounts (T1078)
Severity	Low

Description

A user has flagged an MFA request as suspicious in Microsoft Entra ID. This could indicate a potential compromised user account or unauthorized access attempt.

Attacker's Goals

• An attacker may attempt to gain unauthorized access to the account.

Investigative actions

• Check if the authentication attempt was legitimate.
• Investigate any recent unusual login behavior or IP addresses associated with the account.
• Verify whether the user has recently changed their authentication methods or account settings.
• Follow the account for possible suspicious or unusual logins.