Detection rules › Sigma
Guest User Invited By Non Approved Inviters
Detects when a user that doesn't have permissions to invite a guest user attempts to invite one.
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 |
Rule body yaml
title: Guest User Invited By Non Approved Inviters
id: 0b4b72e3-4c53-4d5b-b198-2c58cfef39a9
status: test
description: Detects when a user that doesn't have permissions to invite a guest user attempts to invite one.
references:
- https://learn.microsoft.com/en-us/entra/architecture/security-operations-privileged-accounts#things-to-monitor
author: Mark Morowczynski '@markmorow', Yochana Henderson, '@Yochana-H'
date: 2022-08-10
tags:
- attack.privilege-escalation
- attack.initial-access
- attack.persistence
- attack.stealth
- attack.t1078.004
logsource:
product: azure
service: auditlogs
detection:
selection:
properties.message: Invite external user
Status: failure
condition: selection
falsepositives:
- A non malicious user is unaware of the proper process
level: medium
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
properties.message: Invite external user
Status: failure
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 |
|---|---|---|
Status | eq |
|
properties.message | eq |
|