Powershell Directory Enumeration

calendar Aug 12, 2024 · attack.discovery attack.t1083  ·
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Detects technique used by MAZE ransomware to enumerate directories using Powershell

Sigma rule (View on GitHub)

 1title: Powershell Directory Enumeration
 2id: 162e69a7-7981-4344-84a9-0f1c9a217a52
 3status: test
 4description: Detects technique used by MAZE ransomware to enumerate directories using Powershell
 5references:
 6    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1083/T1083.md
 7    - https://www.mandiant.com/resources/tactics-techniques-procedures-associated-with-maze-ransomware-incidents
 8author: frack113
 9date: 2022-03-17
10tags:
11    - attack.discovery
12    - attack.t1083
13logsource:
14    product: windows
15    category: ps_script
16    definition: 'Requirements: Script Block Logging must be enabled'
17detection:
18    selection:
19        ScriptBlockText|contains|all:
20            - foreach
21            - Get-ChildItem
22            - '-Path '
23            - '-ErrorAction '
24            - SilentlyContinue
25            - 'Out-File '
26            - '-append'
27    condition: selection
28falsepositives:
29    - Legitimate PowerShell scripts
30level: medium

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