Detection rules › Sigma
User Access Blocked by Azure Conditional Access
Detect access has been blocked by Conditional Access policies. The access policy does not allow token issuance which might be sights≈ of unauthorizeed login to valid accounts.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Initial Access | T1078.004 Valid Accounts: Cloud Accounts |
| Persistence | T1078.004 Valid Accounts: Cloud Accounts |
| Privilege Escalation | T1078.004 Valid Accounts: Cloud Accounts |
| Stealth | T1078.004 Valid Accounts: Cloud Accounts |
| Credential Access | T1110 Brute Force |
Rules detecting the same action
Other rules on this platform that filter on the same API call or operation.
Rule body yaml
title: User Access Blocked by Azure Conditional Access
id: 9a60e676-26ac-44c3-814b-0c2a8b977adf
status: test
description: |
Detect access has been blocked by Conditional Access policies.
The access policy does not allow token issuance which might be sights≈ of unauthorizeed login to valid accounts.
references:
- https://learn.microsoft.com/en-us/entra/architecture/security-operations-privileged-accounts
author: AlertIQ
date: 2021-10-10
modified: 2022-12-25
tags:
- attack.privilege-escalation
- attack.persistence
- attack.credential-access
- attack.initial-access
- attack.stealth
- attack.t1110
- attack.t1078.004
logsource:
product: azure
service: signinlogs
detection:
selection:
ResultType: 53003
condition: selection
falsepositives:
- Unknown
level: medium
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
ResultType: 53003
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
ResultType | eq |
|