IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
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Elastic Docs ›Elastic Security Solution [8.2] ›Detections and alerts ›Prebuilt rule reference

Creation or Modification of a new GPO Scheduled Task or Service

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Creation or Modification of a new GPO Scheduled Task or Service

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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: 7 (version history)

Added (Elastic Stack release): 7.10.0

Last modified (Elastic Stack release): 8.2.0

Rule authors: Elastic

Rule license: Elastic License v2

Investigation guide

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## Config

If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.

Rule query

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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"

Threat mapping

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Framework: MITRE ATT&CKTM

Rule version history

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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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