Entra ID Temporary Access Pass Created for User

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Entra ID Temporary Access Pass Created for User

Identifies the creation of a Temporary Access Pass (TAP) for an Entra ID user account. A TAP is a time-limited passcode that allows passwordless authentication and bypasses existing MFA requirements, including phishing-resistant methods. An attacker with User Administrator or Authentication Administrator privileges can issue a TAP for a target account, sign in without the current password, and register new persistent authentication methods before the TAP expires.

Rule type: query

Rule indices:

logs-azure.auditlogs-*

Severity: high

Risk score: 73

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

Domain: Cloud
Domain: Identity
Data Source: Azure
Data Source: Microsoft Entra ID
Data Source: Microsoft Entra ID Audit Logs
Use Case: Identity and Access Audit
Tactic: Initial Access
Tactic: Lateral Movement
Resources: Investigation Guide

Version: 1

Rule authors:

Elastic
descambiado

Rule license: Elastic License v2

Investigation guide

edit

Triage and analysis

Investigating Entra ID Temporary Access Pass Created for User

A Temporary Access Pass is a time-limited credential that bypasses all existing MFA factors for the target account. In a steady-state tenant, TAP creation is rare and should be correlated against help desk records or onboarding workflows.

Possible investigation steps

Identify the administrator who created the TAP (azure.auditlogs.properties.initiated_by) and verify whether the action was authorized by a help desk ticket or change management record.
Identify the target account and assess its privilege level — TAPs issued for Global Administrators, Application Administrators, or accounts with high-value data access are highest risk.
Check for sign-ins by the target account using the TAP credential: look for sign-ins where azure.signinlogs.properties.authentication_details contains "Temporary Access Pass" shortly after the TAP creation event.
If the TAP was used to sign in, review what authentication methods were registered during or after the session — an attacker will use the TAP window to add a persistent authenticator.
Check whether the creating administrator’s account shows anomalous activity in the preceding 24 hours.

False positive analysis

TAP creation by your identity team for locked-out users is a legitimate workflow. Confirm via help desk ticket correlation.
New employee onboarding that provisions TAPs as part of passwordless enrollment is expected behavior.

Response and remediation

Revoke the TAP immediately if unauthorized: Entra ID > Users > Authentication methods.
Audit all authentication methods registered by the target account after TAP creation and remove any that were not previously present.
Reset the target account’s password and revoke all active sessions.
Review the creating administrator’s recent actions for signs of compromise.

Rule query

edit

data_stream.dataset: "azure.auditlogs" and
(
    (
        azure.auditlogs.operation_name: "User registered security info" and
        azure.auditlogs.properties.result_reason: "User registered temporary access pass method"
    ) or (
        azure.auditlogs.operation_name: "Create Temporary Access Pass method for user"
    ) or (
        azure.auditlogs.operation_name: "Admin registered security info" and
        azure.auditlogs.properties.target_resources.*.modified_properties.*.display_name: *TemporaryAccessPass*
    )
) and
event.outcome: ("Success" or "success")

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Initial Access
- ID: TA0001
- Reference URL: https://attack.mitre.org/tactics/TA0001/
Technique:
- Name: Valid Accounts
- ID: T1078
- Reference URL: https://attack.mitre.org/techniques/T1078/
Sub-technique:
- Name: Cloud Accounts
- ID: T1078.004
- Reference URL: https://attack.mitre.org/techniques/T1078/004/
Tactic:
- Name: Lateral Movement
- ID: TA0008
- Reference URL: https://attack.mitre.org/tactics/TA0008/
Technique:
- Name: Use Alternate Authentication Material
- ID: T1550
- Reference URL: https://attack.mitre.org/techniques/T1550/

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