Powershell Sensitive File Discovery

Detect adversaries enumerate sensitive files

title: Powershell Sensitive File Discovery
id: 7d416556-6502-45b2-9bad-9d2f05f38997
related:
    - id: d23f2ba5-9da0-4463-8908-8ee47f614bb9
      type: derived
status: test
description: Detect adversaries enumerate sensitive files
references:
    - https://twitter.com/malmoeb/status/1570814999370801158
author: frack113
date: 2022-09-16
modified: 2026-10-14
tags:
    - attack.discovery
    - attack.t1083
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_action:
        # Whole words only: as plain substrings, 'ls' and 'gci' also match words such as 'false' or 'credentials'
        ScriptBlockText|re|i: '\b(?:get-childitem|gci|ls|dir)\b'
    selection_recurse:
        ScriptBlockText|contains: '-recurse'
    selection_file:
        ScriptBlockText|contains:
            - '.pass'
            - '.kdbx'
            - '.kdb'
    condition: all of selection_*
falsepositives:
    - Unknown
level: medium
regression_tests_path: regression_data/rules/windows/powershell/powershell_script/posh_ps_sensitive_file_discovery/info.yml

• T1083File and Directory Discovery

• https://twitter.com/malmoeb/status/1570814999370801158↗