SigmaHQ/rules/linux/macos_xattr_gatekeeper_bypass.yml

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YAML

title: Gatekeeper Bypass via Xattr
id: f5141b6d-9f42-41c6-a7bf-2a780678b29b
status: experimental
description: Detects macOS Gatekeeper bypass via xattr utility
author: Daniil Yugoslavskiy, oscd.community
date: 2020/10/19
references:
- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1553.001/T1553.001.md
logsource:
category: process_creation
product: macos
detection:
selection:
Image|endswith: '/xattr'
CommandLine|contains|all:
- '-r'
- 'com.apple.quarantine'
condition: selection
falsepositives:
- Legitimate activities
level: low
tags:
- attack.defense_evasion
- attack.t1553.001