File And SubFolder Enumeration Via Dir Command

Title: File And SubFolder Enumeration Via Dir Command
Status: test
Description:Detects usage of the "dir" command part of Windows CMD with the "/S" command line flag in order to enumerate files in a specified directory and all subdirectories.
References:
  -https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1217/T1217.md
Author: frack113
Date: 2021-12-13
modified:2026-05-18
Tags:

• -'attack.discovery'
• -'attack.t1217'

Logsource:

• category: process_creation
• product: windows

Detection:
  selection_cmd:
Image|endswith:'\cmd.exe' OriginalFileName:'Cmd.Exe'   selection_cli:
    CommandLine|contains|windash: '-s'
    CommandLine|contains: 'dir '
  filter_main_rmdir:
    CommandLine|contains: 'rmdir'
  condition:all of selection_* and not 1 of filter_main_*
Falsepositives:
  -Likely
Level: low