sigmamediumHunting

Powershell Sensitive File Discovery

Detect adversaries enumerate sensitive files

MITRE ATT&CK

discovery

Detection Query

selection_action:
  ScriptBlockText|contains:
    - ls
    - get-childitem
    - gci
selection_recurse:
  ScriptBlockText|contains: -recurse
selection_file:
  ScriptBlockText|contains:
    - .pass
    - .kdbx
    - .kdb
condition: all of selection_*

Author

frack113

Created

2022-09-16

Data Sources

windowsps_script

Platforms

windows

References

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

Tags

attack.discoveryattack.t1083

Raw Content

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
tags:
    - attack.discovery
    - attack.t1083
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_action:
        ScriptBlockText|contains:
            - ls
            - get-childitem
            - gci
    selection_recurse:
        ScriptBlockText|contains: '-recurse'
    selection_file:
        ScriptBlockText|contains:
            - '.pass'
            - '.kdbx'
            - '.kdb'
    condition: all of selection_*
falsepositives:
    - Unknown
level: medium