Sigma rule: PowerShell AppLocker Policy Discovery Via Get-AppLockerPolicy

Rule

Title

PowerShell AppLocker Policy Discovery Via Get-AppLockerPolicy

Status

experimental

Level

low

Author

Tom3306

Date

2026-08-19

File

rules/windows/process_creation/proc_creation_win_powershell_applocker_policy_discovery_via_get_applockerpolicy.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects AppLocker policy enumeration attempts via PowerShell using the Get-AppLockerPolicy cmdlet and an policy scope of either Effective, LDAP, or Local.

Log source

product

windows

category

process_creation

Detection

selection_img:
    - Image|endswith:
          - '\powershell.exe'
          - '\pwsh.exe'
    - OriginalFileName:
          - 'PowerShell.EXE'
          - 'pwsh.dll'
selection_cmdlet:
    CommandLine|contains: 'Get-AppLockerPolicy'
selection_flag:
    CommandLine|contains|windash:
        - ' -Effective'
        - ' -Ldap '
        - ' -Local'
condition: all of selection_*

False positives (as the rule lists them)

• PowerShell-based AppLocker auditing and policy troubleshooting by administrators.

Tags

• attack.discovery
• attack.t1518.001

MITRE ATT&CK ids this rule names

• T1518.001

References

• https://learn.microsoft.com/en-us/powershell/module/applocker/get-applockerpolicy

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_powershell_applocker_policy_discovery_via_get_applockerpolicy.yml