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Creation or Modification of a new GPO Scheduled Task or Serviceedit

Detects the creation or modification of a new Group Policy based scheduled task or service. These methods are used for legitimate system administration, but can also be abused by an attacker with domain admin permissions to execute a malicious payload remotely on all or a subset of the domain joined machines.

Rule type: eql

Rule indices:

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

Severity: low

Risk score: 21

Runs every: 5 minutes

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

Tags:

  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Persistence

Version: 101 (version history)

Added (Elastic Stack release): 7.10.0

Last modified (Elastic Stack release): 8.5.0

Rule authors: Elastic

Rule license: Elastic License v2

Investigation guideedit












Rule queryedit






file where event.type != "deletion" and file.path : ("?:\\Windows\\S
YSVOL\\domain\\Policies\\*\\MACHINE\\Preferences\\ScheduledTasks\\Sche
duledTasks.xml", "?:\\Windows\\SYSVOL\\domain\\Policies
\\*\\MACHINE\\Preferences\\Services\\Services.xml") and not
process.name : "dfsrs.exe"











Threat mappingedit




Framework: MITRE ATT&CKTM














Rule version historyedit










Version 101 (8.5.0 release)








    

  • 

    Updated query, changed from:
    

    

    file where event.type != "deletion" and file.path : ("?:\\Windows\\S
YSVOL\\domain\\Policies\\*\\MACHINE\\Preferences\\ScheduledTasks\\Sche
duledTasks.xml", "?:\\Windows\\SYSVOL\\domain\\Policies
\\*\\MACHINE\\Preferences\\Preferences\\Services\\Services.xml") and
not process.name : "dfsrs.exe"
    

    

    • 









Version 9 (8.4.0 release)








    

  • 
Formatting only

    • 









Version 7 (8.2.0 release)








    

  • 
Formatting only

    • 









Version 6 (7.16.0 release)








    

  • 
Formatting only

    • 









Version 5 (7.13.0 release)








    

  • 

    Updated query, changed from:
    

    

    event.category:file and not event.type:deletion and file.path:(C\:\\Wi
ndows\\SYSVOL\\domain\\Policies\\*\\MACHINE\\Preferences\\ScheduledTas
ks\\ScheduledTasks.xml or C\:\\Windows\\SYSVOL\\domain\\Policies\\*\\M
ACHINE\\Preferences\\Preferences\\Services\\Services.xml) and not
process.name:dfsrs.exe
    

    

    • 









Version 4 (7.12.0 release)








    

  • 
Formatting only

    • 









Version 3 (7.11.2 release)








    

  • 
Formatting only

    • 









Version 2 (7.11.0 release)








    

  • 
Formatting only

    • 


















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