Decode Base64 Encoded Text -MacOs

Title: Decode Base64 Encoded Text -MacOs
Status: test
Description:Detects usage of base64 utility to decode arbitrary base64-encoded text
References:
  -https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1027/T1027.md
Author: Daniil Yugoslavskiy, oscd.community
Date: 2020-10-19
modified:2022-11-26
Tags:

• -'attack.stealth'
• -'attack.t1027'

Logsource:

• category: process_creation
• product: macos

Detection:
  selection:
    Image: '/usr/bin/base64'
    CommandLine|contains: '-d'
  condition:selection
Falsepositives:
  -Legitimate activities
Level: low