IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
« Suspicious Startup Shell Folder Modification Persistence via Scheduled Job Creation »
Elastic Docs ›Elastic Security Solution [7.16] ›Downloadable rule update v0.16.2

Creation or Modification of a new GPO Scheduled Task or Service

edit

Creation or Modification of a new GPO Scheduled Task or Service

edit

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: 5m

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

Maximum alerts per execution: 100

References: None

Tags:

  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Persistence

Version: 7

Rule authors:

  • Elastic

Rule license: Elastic License v2

Investigation guide

edit
## 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

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

Framework: MITRE ATT&CKTM

« Suspicious Startup Shell Folder Modification Persistence via Scheduled Job Creation »