LSA PPL Protection Setting Modification via CommandLine

 1title: LSA PPL Protection Setting Modification via CommandLine
 2id: 8c0eca51-0f88-4db2-9183-fdfb10c703f9
 3status: test
 4description: |
 5    Detects modification of LSA PPL protection settings via CommandLine.
 6    It may indicate an attempt to disable protection and enable credential dumping tools to access LSASS process memory.    
 7references:
 8    - https://thedfirreport.com/2022/03/21/apt35-automates-initial-access-using-proxyshell/
 9    - https://github.com/shoober420/windows11-scripts/blob/38d83331738cd713ccb42f2c4557d17a27aefd98/Windows11Tweaks.bat#L1825
10author: Florian Roth (Nextron Systems), Swachchhanda Shrawan Poudel (Nextron Systems)
11date: 2022-03-22
12modified: 2026-03-13
13tags:
14    - attack.defense-impairment
15    - attack.t1689
16logsource:
17    category: process_creation
18    product: windows
19detection:
20    selection_img:
21        - Image|endswith:
22              - '\reg.exe'
23              - '\powershell.exe'
24              - '\pwsh.exe'
25        - OriginalFileName:
26              - 'reg.exe'
27              - 'powershell.exe'
28              - 'pwsh.dll'
29    selection_cli_action:
30        CommandLine|contains|all:
31            - 'ControlSet'
32            - '\Control\Lsa'
33        CommandLine|contains:
34            - 'Set-ItemProperty'
35            - 'New-ItemProperty'
36            - ' add '
37    selection_key:
38        CommandLine|contains:
39            - 'IsPplAutoEnabled'
40            - 'RunAsPPL'
41            - 'RunAsPPLBoot'
42    condition: all of selection_*
43falsepositives:
44    - Unlikely
45level: medium