Detection rules › Sigma
Sign-in Failure Due to Conditional Access Requirements Not Met
Define a baseline threshold for failed sign-ins due to Conditional Access failures
Known false positives
- Service Account misconfigured
- Misconfigured Systems
- Vulnerability Scanners
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Initial Access | |
| Persistence | |
| Privilege Escalation | |
| Stealth | |
| Credential Access |
Telemetry coverage
| Platform | Record / event type |
|---|---|
| Entra ID | SigninLogs sign-in event: Sign-in blocked by Conditional Access |
Rules detecting the same action
These rules filter on the same operation.
Rule body
title: Sign-in Failure Due to Conditional Access Requirements Not Met
id: b4a6d707-9430-4f5f-af68-0337f52d5c42
status: test
description: Define a baseline threshold for failed sign-ins due to Conditional Access failures
references:
- https://learn.microsoft.com/en-gb/entra/architecture/security-operations-privileged-accounts
author: Yochana Henderson, '@Yochana-H'
date: 2022-06-01
tags:
- attack.privilege-escalation
- attack.persistence
- attack.initial-access
- attack.credential-access
- attack.stealth
- attack.t1110
- attack.t1078.004
logsource:
product: azure
service: signinlogs
detection:
selection:
ResultType: 53003
Resultdescription: Blocked by Conditional Access
condition: selection
falsepositives:
- Service Account misconfigured
- Misconfigured Systems
- Vulnerability Scanners
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
ResultType: 53003
Resultdescription: Blocked by Conditional Access
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
ResultType | eq |
| field:"ResultType" kind:eq value:"53003" |
Resultdescription | eq |
| field:"Resultdescription" kind:eq value:"Blocked by Conditional Access" |