IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
TCC Bypass via Mounted APFS Snapshot Access
editTCC Bypass via Mounted APFS Snapshot Access
editIdentifies the use of the mount_apfs command to mount the entire file system through Apple File System (APFS) snapshots as read-only and with the noowners flag set. This action enables the adversary to access almost any file in the file system, including all user data and files protected by Apple’s privacy framework (TCC).
Rule type: query
Rule indices:
- auditbeat-*
- logs-endpoint.events.*
Severity: high
Risk score: 73
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: macOS
- Use Case: Threat Detection
- Tactic: Defense Evasion
- Use Case: Vulnerability
Version: 103
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
editevent.category:process and host.os.type:macos and event.type:(start or process_started) and process.name:mount_apfs and process.args:(/System/Volumes/Data and noowners)
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Direct Volume Access
- ID: T1006
- Reference URL: https://attack.mitre.org/techniques/T1006/