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Unusual Scheduled Task Update

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Identifies first-time modifications to scheduled tasks by user accounts, excluding system activity and machine accounts.

Rule type: new_terms

Rule indices:

  • logs-system.security*
  • logs-windows.forwarded*
  • winlogbeat-*

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:

Tags:

  • Domain: Endpoint
  • OS: Windows
  • Use Case: Threat Detection
  • Tactic: Persistence
  • Data Source: Windows Security Event Logs

Version: 114

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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event.category: "iam" and event.code: "4702" and
  not winlog.event_data.SubjectUserSid: ("S-1-5-18" or "S-1-5-19" or "S-1-5-20") and
  not user.name : *$

Framework: MITRE ATT&CKTM