Elastic Security Detection Rules

M365 Identity Login from Atypical Region

Last updated 6 days ago on 2026-05-06
Created 2 years ago on 2024-09-04

About

Detects successful Microsoft 365 portal logins from a country and region the user has not previously authenticated from in a specific time window. Atypical regions are identified by combining the user's country and region geolocation history; an authentication from a new country/region pair for that user may indicate an adversary attempting to access the account from an unusual location or behind a VPN.
Tags
Domain: CloudDomain: IdentityData Source: Microsoft 365Data Source: Microsoft 365 Audit LogsUse Case: Threat DetectionUse Case: Identity and Access AuditTactic: Initial AccessLanguage: kuery
Severity
medium
Risk Score
47
MITRE ATT&CK™

Initial Access (TA0001)(external, opens in a new tab or window)

↳ Valid Accounts (T1078)(external, opens in a new tab or window)

False Positive Examples
False positives may occur when users are using a VPN or when users are traveling to different locations" Mobile access may also result in false positives, as users may log in from various locations while on the go.
License
Elastic License v2(external, opens in a new tab or window)

Definition

Rule Type
New Terms Rule
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
logs-o365.audit-*
Related Integrations

o365(external, opens in a new tab or window)

Query
text code block:
data_stream.dataset:o365.audit and
    event.provider:AzureActiveDirectory and
    event.action:UserLoggedIn and
    event.outcome:success and
    o365.audit.Target.Type:(0 or 10 or 2 or 3 or 5 or 6) and
    o365.audit.UserId:(* and not "Not Available") and
    source.geo.country_name:* and
    source.geo.region_name:* and
    not o365.audit.ApplicationId:(
        29d9ed98-a469-4536-ade2-f981bc1d605e or
        38aa3b87-a06d-4817-b275-7a316988d93b or
        a809996b-059e-42e2-9866-db24b99a9782 or
        08e18876-6177-487e-b8b5-cf950c1e598c or
        3e62f81e-590b-425b-9531-cad6683656cf or
        d7b530a4-7680-4c23-a8bf-c52c121d2e87
    ) and not o365.audit.ExtendedProperties.RequestType:(
        "Consent:Set" or
        "DeviceAuth:ReprocessTls" or
        "Kmsi:kmsi" or
        "Login:reprocess" or
        "Login:resume" or
        "MessagePrompt:MessagePrompt" or
        "Saml2:processrequest" or
        "SAS:EndAuth" or
        "SAS:ProcessAuth"
    ) and
    not user_agent.original:(*iPhone* or *iPad* or *Android* or *PKeyAuth*)

Install detection rules in Elastic Security

Detect M365 Identity Login from Atypical Region in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(external, opens in a new tab or window).