Compress Data and Lock With Password for Exfiltration With 7-ZIP

Title: Compress Data and Lock With Password for Exfiltration With 7-ZIP
Status: test
Description:An adversary may compress or encrypt data that is collected prior to exfiltration using 3rd party utilities
References:
  -https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1560.001/T1560.001.md
Author: frack113
Date: 2021-07-27
modified:2026-06-05
Tags:

• -'attack.collection'
• -'attack.t1560.001'

Logsource:

• category: process_creation
• product: windows

Detection:
  selection_img:
Description|contains:'7-Zip'     - Image|endswith:
      - '\7z.exe'
      - '\7zr.exe'
      - '\7za.exe'
    - OriginalFileName:
      - '7z.exe'
      - '7za.exe'
      - '7zr.exe'
  selection_password:
    CommandLine|contains: ' -p'
  selection_action:
    CommandLine|contains:
      -' a '
      -' u '

  condition:all of selection_*
Falsepositives:
  -Legitimate activity is expected since compressing files with a password is common.
Level: medium