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Persistence via Hidden Run Key Detected

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Persistence via Hidden Run Key Detected

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Identifies a persistence mechanism that utilizes the NtSetValueKey native API to create a hidden (null terminated) registry key. An adversary may use this method to hide from system utilities such as the Registry Editor (regedit).

Rule type: eql

Rule indices:

logs-endpoint.events.*
winlogbeat-*
logs-windows.*
endgame-*

Severity: high

Risk score: 73

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: Persistence
Data Source: Elastic Endgame

Version: 103

Rule authors:

Elastic

Rule license: Elastic License v2

Investigation guide

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Rule query

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/* Registry Path ends with backslash */
registry where host.os.type == "windows" and /* length(registry.data.strings) > 0 and */
 registry.path : ("HKEY_USERS\\*\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\\",
                  "HKU\\*\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\\",
                  "HKLM\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\\",
                  "HKLM\\Software\\WOW6432Node\\Microsoft\\Windows\\CurrentVersion\\Run\\",
                  "HKEY_USERS\\*\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer\\Run\\",
                  "HKU\\*\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer\\Run\\",
                  "\\REGISTRY\\MACHINE\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer\\Run\\",
                  "\\REGISTRY\\USER\\*\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\\",
                  "\\REGISTRY\\MACHINE\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\\",
                  "\\REGISTRY\\MACHINE\\Software\\WOW6432Node\\Microsoft\\Windows\\CurrentVersion\\Run\\",
                  "\\REGISTRY\\USER\\*\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer\\Run\\",
                  "\\REGISTRY\\MACHINE\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer\\Run\\")

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Persistence
- ID: TA0003
- Reference URL: https://attack.mitre.org/tactics/TA0003/
Technique:
- Name: Boot or Logon Autostart Execution
- ID: T1547
- Reference URL: https://attack.mitre.org/techniques/T1547/
Sub-technique:
- Name: Registry Run Keys / Startup Folder
- ID: T1547.001
- Reference URL: https://attack.mitre.org/techniques/T1547/001/

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