Gatekeeper Bypass via Xattr

Title: Gatekeeper Bypass via Xattr
Status: test
Description:Detects macOS Gatekeeper bypass via xattr utility
References:
  -https://github.com/redcanaryco/atomic-red-team/blob/1fed40dc7e48f16ed44dcdd9c73b9222a70cca85/atomics/T1553.001/T1553.001.md
  -https://www.loobins.io/binaries/xattr/
Author: Daniil Yugoslavskiy, oscd.community
Date: 2020-10-19
modified:2024-04-18
Tags:

• -'attack.defense-impairment'
• -'attack.t1553.001'

Logsource:

• category: process_creation
• product: macos

Detection:
  selection:
    Image|endswith: '/xattr'
    CommandLine|contains|all:
      -'-d'
      -'com.apple.quarantine'

  condition:selection
Falsepositives:
  -Legitimate activities
Level: low