Entra ID Device with ROADtools Default OS Build (Entity Analytics)

Last updated 4 days ago on 2026-05-26

Created 4 days ago on 2026-05-26

About

Identifies the first occurrence of a Microsoft Entra ID device, surfaced through the Entra ID Entity Analytics device inventory, whose host name follows the default "DESKTOP-" pattern and whose operating system build is `10.0.19041.928`. This combination is the default device profile that ROADtools (roadtx) uses when registering a device, and the OS build typically differs from the patched OS versions of legitimate hosts in the environment. Adversaries register rogue devices in Entra ID to acquire a Primary Refresh Token (PRT), establish persistence, and obtain trusted, programmatic access to the tenant. Because the OS build is a tool default, this is a high-fidelity but evadable indicator; baseline approved device builds and naming conventions before relying on it.

Tags

Domain: CloudDomain: IdentityData Source: Microsoft Entra IDData Source: Microsoft Entra ID Entity AnalyticsUse Case: Asset VisibilityUse Case: Threat DetectionTactic: PersistenceLanguage: kuery

Severity

medium

Risk Score

MITRE ATT&CK™

Persistence (TA0003)(external, opens in a new tab or window)

↳ Account Manipulation (T1098)(external, opens in a new tab or window)

False Positive Examples

Unmanaged or imaged Windows 10 20H1 hosts may legitimately report the `10.0.19041.928` build with a default "DESKTOP-" host name. Validate against your device inventory and patch baseline before escalating. Authorized red team or penetration testing engagements that use ROADtools to register devices will appear in the device inventory and match this rule. If this is expected, add exceptions for the specific host names or device IDs.

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-entityanalytics_entra_id.device-*
Related Integrations: entityanalytics_entra_id(external, opens in a new tab or window)
Query

✄𐘗text code block:
✄𐘗data_stream.dataset:"entityanalytics_entra_id.device" and
    event.provider:"Microsoft Entra ID" and
    host.name:DESKTOP-* and host.os.version:"10.0.19041.928"

Install detection rules in Elastic Security

Detect Entra ID Device with ROADtools Default OS Build (Entity Analytics) 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).