NullSessionPipe Registry Modification
editNullSessionPipe Registry Modification
editIdentifies 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.
Rule type: eql
Rule indices:
- logs-endpoint.events.registry-*
- endgame-*
- logs-windows.sysmon_operational-*
- winlogbeat-*
- logs-m365_defender.event-*
- logs-sentinel_one_cloud_funnel.*
Severity: medium
Risk score: 47
Runs every: 5m
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
Tags:
- Domain: Endpoint
- OS: Windows
- Use Case: Threat Detection
- Tactic: Lateral Movement
- Tactic: Defense Evasion
- Data Source: Elastic Endgame
- Data Source: Elastic Defend
- Data Source: Sysmon
- Data Source: Microsoft Defender for Endpoint
- Data Source: SentinelOne
Version: 310
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
editregistry where host.os.type == "windows" and event.type == "change" and
registry.path : (
"HKLM\\SYSTEM\\*ControlSet*\\services\\LanmanServer\\Parameters\\NullSessionPipes",
"\\REGISTRY\\MACHINE\\SYSTEM\\*ControlSet*\\services\\LanmanServer\\Parameters\\NullSessionPipes",
"MACHINE\\SYSTEM\\*ControlSet*\\services\\LanmanServer\\Parameters\\NullSessionPipes"
) and length(registry.data.strings) > 0 and
not registry.data.strings : "(empty)"
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Lateral Movement
- ID: TA0008
- Reference URL: https://attack.mitre.org/tactics/TA0008/
-
Technique:
- Name: Remote Services
- ID: T1021
- Reference URL: https://attack.mitre.org/techniques/T1021/
-
Sub-technique:
- Name: SMB/Windows Admin Shares
- ID: T1021.002
- Reference URL: https://attack.mitre.org/techniques/T1021/002/
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Modify Registry
- ID: T1112
- Reference URL: https://attack.mitre.org/techniques/T1112/