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Potential Hidden Local User Account Creation

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Potential Hidden Local User Account Creation

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Identifies attempts to create a local account that will be hidden from the macOS logon window. This may indicate an attempt to evade user attention while maintaining persistence using a separate local account.

Rule type: query

Rule indices:

auditbeat-*
logs-endpoint.events.*

Severity: medium

Risk score: 47

Runs every: 5m

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

Maximum alerts per execution: 100

References:

https://support.apple.com/en-us/HT203998

Tags:

Domain: Endpoint
OS: macOS
Use Case: Threat Detection
Tactic: Persistence
Data Source: Elastic Defend

Version: 104

Rule authors:

Elastic

Rule license: Elastic License v2

Rule query

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event.category:process and host.os.type:macos and event.type:(start or process_started) and
 process.name:dscl and process.args:(IsHidden and create and (true or 1 or yes))

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Persistence
- ID: TA0003
- Reference URL: https://attack.mitre.org/tactics/TA0003/
Technique:
- Name: Valid Accounts
- ID: T1078
- Reference URL: https://attack.mitre.org/techniques/T1078/
Sub-technique:
- Name: Local Accounts
- ID: T1078.003
- Reference URL: https://attack.mitre.org/techniques/T1078/003/

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