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Temporarily Scheduled Task Creationedit
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 positivesedit
Legitimate scheduled tasks may be created during installation of new software.
Rule queryedit
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 mappingedit
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Indicator Removal on Host
- ID: T1070
- Reference URL: https://attack.mitre.org/techniques/T1070/
-
Tactic:
- Name: Persistence
- ID: TA0003
- Reference URL: https://attack.mitre.org/tactics/TA0003/
-
Technique:
- Name: Scheduled Task/Job
- ID: T1053
- Reference URL: https://attack.mitre.org/techniques/T1053/
Rule version historyedit
- 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"]
-