Elastic Security Detection Rules

Office Test Registry Persistence

Last updated 5 months ago on 2025-03-20
Created 2 years ago on 2023-08-22

About

Identifies the modification of the Microsoft Office "Office Test" Registry key, a registry location that can be used to specify a DLL which will be executed every time an MS Office application is started. Attackers can abuse this to gain persistence on a compromised host.
Tags
Domain: EndpointOS: WindowsUse Case: Threat DetectionTactic: PersistenceTactic: Defense EvasionData Source: Elastic DefendData Source: Elastic EndgameData Source: Microsoft Defender for EndpointData Source: SentinelOneLanguage: eql
Severity
low
Risk Score
21
MITRE ATT&CK™

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

↳ Office Application Startup (T1137)(opens in a new tab or window)

Defense Evasion (TA0005)(opens in a new tab or window)

↳ Modify Registry (T1112)(opens in a new tab or window)

License
Elastic License v2(opens in a new tab or window)

Definition

Rule Type
Event Correlation Rule
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
logs-endpoint.events.registry-*logs-m365_defender.event-*endgame-*logs-sentinel_one_cloud_funnel.*
Related Integrations

endpoint(opens in a new tab or window)

m365_defender(opens in a new tab or window)

sentinel_one_cloud_funnel(opens in a new tab or window)

Query
registry where host.os.type == "windows" and event.action != "deletion" and
    registry.path : "*\\Software\\Microsoft\\Office Test\\Special\\Perf\\*"

Install detection rules in Elastic Security

Detect Office Test Registry Persistence 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(opens in a new tab or window).