This documentation contains work-in-progress information for future Elastic Stack and Cloud releases. Use the version selector to view supported release docs. It also contains some Elastic Cloud serverless information. Check out our serverless docs for more details.
« Tampering of Bash Command-Line History Third-party Backup Files Deleted via Unexpected Process »
Elastic Docs ›Elastic Security Solution [8.x] ›Detections and alerts ›Prebuilt rule reference

Temporarily Scheduled Task Creation

edit

Temporarily Scheduled Task Creation

edit

Indicates the creation and deletion of a scheduled task within a short time interval. Adversaries can use these to proxy malicious execution via the schedule service and perform clean up.

Rule type: eql

Rule indices:

  • winlogbeat-*
  • logs-system.*

Severity: medium

Risk score: 47

Runs every: 5 minutes

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

Maximum alerts per execution: 100

References:

Tags:

  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Defense Evasion
  • Persistence

Version: 2 (version history)

Added (Elastic Stack release): 8.5.0

Last modified (Elastic Stack release): 8.6.0

Rule authors: Elastic

Rule license: Elastic License v2

Potential false positives

edit

Legitimate scheduled tasks may be created during installation of new software.

Rule query

edit
sequence by host.id, winlog.event_data.TaskName with maxspan=5m
[iam where event.action == "scheduled-task-created" and not user.name
: "*$"] [iam where event.action == "scheduled-task-deleted" and not
user.name : "*$"]

Threat mapping

edit

Framework: MITRE ATT&CKTM

Rule version history

edit
Version 2 (8.6.0 release)

  • Updated query, changed from:

    sequence by host.id, winlog.event_data.TaskName with maxspan=5m
[iam where event.action == "scheduled-task-created"] [iam where
event.action == "scheduled-task-deleted"]
« Tampering of Bash Command-Line History Third-party Backup Files Deleted via Unexpected Process »