File And SubFolder Enumeration Via Dir Command

 1title: File And SubFolder Enumeration Via Dir Command
 2id: 7c9340a9-e2ee-4e43-94c5-c54ebbea1006
 3status: test
 4description: |
 5        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.
 6references:
 7    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1217/T1217.md
 8author: frack113
 9date: 2021-12-13
10modified: 2026-05-18
11tags:
12    - attack.discovery
13    - attack.t1217
14logsource:
15    category: process_creation
16    product: windows
17detection:
18    selection_cmd:
19        - Image|endswith: '\cmd.exe'
20        - OriginalFileName: Cmd.Exe
21    selection_cli:
22        CommandLine|contains|windash: '-s'
23        CommandLine|contains: 'dir '
24    filter_main_rmdir:
25        CommandLine|contains: 'rmdir'
26    condition: all of selection_* and not 1 of filter_main_*
27falsepositives:
28    - Likely
29level: low
30regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_cmd_dir_execution/info.yml
31simulation:
32    - type: atomic-red-team
33      name: List Internet Explorer Bookmarks using the command prompt
34      technique: T1217
35      atomic_guid: 727dbcdb-e495-4ab1-a6c4-80c7f77aef85