NullSessionPipe Registry Modification

Last updated 4 months ago on 2025-08-26

Created 5 years ago on 2021-03-22

About

Identifies NullSessionPipe registry modifications that specify which pipes can be accessed anonymously. This could be indicative of adversary lateral movement preparation by making the added pipe available to everyone.

Tags

Domain: EndpointOS: WindowsUse Case: Threat DetectionTactic: Lateral MovementTactic: Defense EvasionData Source: Elastic EndgameData Source: Elastic DefendData Source: SysmonData Source: Microsoft Defender for EndpointData Source: SentinelOneData Source: CrowdstrikeLanguage: eql

Severity

medium

Risk Score

MITRE ATT&CK™

Lateral Movement (TA0008)(external, opens in a new tab or window)

↳ Remote Services (T1021)(external, opens in a new tab or window)

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

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

License

Elastic License v2(external, 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-*endgame-*logs-windows.sysmon_operational-*winlogbeat-*logs-m365_defender.event-*logs-sentinel_one_cloud_funnel.*logs-crowdstrike.fdr*

Related Integrations

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

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

m365_defender(external, opens in a new tab or window)

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

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

Query

✄𐘗text code block:
✄𐘗registry where host.os.type == "windows" and event.type == "change" and
  registry.value : "NullSessionPipes" and
  length(registry.data.strings) > 0 and
  not registry.data.strings : "(empty)"

Install detection rules in Elastic Security

Detect NullSessionPipe Registry Modification 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).