Detection rules › Sigma
Logon from a Risky IP Address
Detects when a Microsoft Cloud App Security reported when a user signs into your sanctioned apps from a risky IP address.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Initial Access | T1078 Valid Accounts |
| Persistence | T1078 Valid Accounts |
| Privilege Escalation | T1078 Valid Accounts |
| Stealth | T1078 Valid Accounts |
Rule body yaml
title: Logon from a Risky IP Address
id: c191e2fa-f9d6-4ccf-82af-4f2aba08359f
status: test
description: Detects when a Microsoft Cloud App Security reported when a user signs into your sanctioned apps from a risky IP address.
references:
- https://learn.microsoft.com/en-us/defender-cloud-apps/anomaly-detection-policy
- https://learn.microsoft.com/en-us/defender-cloud-apps/policy-template-reference
author: Austin Songer @austinsonger
date: 2021-08-23
modified: 2022-10-09
tags:
- attack.privilege-escalation
- attack.persistence
- attack.initial-access
- attack.stealth
- attack.t1078
logsource:
service: threat_management
product: m365
detection:
selection:
eventSource: SecurityComplianceCenter
eventName: 'Log on from a risky IP address'
status: success
condition: selection
falsepositives:
- Unknown
level: medium
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
eventSource: SecurityComplianceCenter
eventName: 'Log on from a risky IP address'
status: success
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 |
|---|---|---|
eventName | eq |
|
eventSource | eq |
|
status | eq |
|