Powershell Install a DLL in System Directory

 1title: Powershell Install a DLL in System Directory
 2id: 63bf8794-9917-45bc-88dd-e1b5abc0ecfd
 3status: test
 4description: Uses PowerShell to install/copy a file into a system directory such as "System32" or "SysWOW64"
 5references:
 6    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1556.002/T1556.002.md#atomic-test-1---install-and-register-password-filter-dll
 7author: frack113, Nasreddine Bencherchali (Nextron Systems)
 8date: 2021-12-27
 9modified: 2024-01-22
10tags:
11    - attack.credential-access
12    - attack.t1556.002
13logsource:
14    product: windows
15    category: ps_script
16    definition: 'Requirements: Script Block Logging must be enabled'
17detection:
18    selection:
19        ScriptBlockText|re: '(Copy-Item|cpi) .{2,128} -Destination .{1,32}\\Windows\\(System32|SysWOW64)'
20    condition: selection
21falsepositives:
22    - Unknown
23level: high