Elastic Security Detection Rules

Startup/Logon Script added to Group Policy Object

Last updated 9 months ago on 2025-03-20
Created 4 years ago on 2021-11-08

About

Detects the modification of Group Policy Objects (GPO) to add a startup/logon script to users or computer objects.
Tags
Domain: EndpointOS: WindowsUse Case: Threat DetectionTactic: Privilege EscalationData Source: Active DirectoryUse Case: Active Directory MonitoringData Source: Windows Security Event LogsLanguage: eql
Severity
medium
Risk Score
47
MITRE ATT&CK™

Privilege Escalation (TA0004)(external, opens in a new tab or window)

↳ Domain or Tenant Policy Modification (T1484)(external, opens in a new tab or window)

↳ Boot or Logon Autostart Execution (T1547)(external, opens in a new tab or window)

False Positive Examples
Legitimate Administrative Activity
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-system.security*logs-windows.forwarded*winlogbeat-*
Related Integrations

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

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

Query
text code block:
any where host.os.type == "windows" and event.code in ("5136", "5145") and
(
  (
    winlog.event_data.AttributeLDAPDisplayName : (
      "gPCMachineExtensionNames",
      "gPCUserExtensionNames"
    ) and
    winlog.event_data.AttributeValue : "*42B5FAAE-6536-11D2-AE5A-0000F87571E3*" and
    winlog.event_data.AttributeValue : (
      "*40B66650-4972-11D1-A7CA-0000F87571E3*",
      "*40B6664F-4972-11D1-A7CA-0000F87571E3*"
    )
  ) or
  (
    winlog.event_data.ShareName : "\\\\*\\SYSVOL" and
    winlog.event_data.RelativeTargetName : ("*\\scripts.ini", "*\\psscripts.ini") and
    winlog.event_data.AccessList:"*%%4417*"
  )
)

Install detection rules in Elastic Security

Detect Startup/Logon Script added to Group Policy Object 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).