New-AppLockerPolicy

New-AppLockerPolicy

    [-FileInformation] <System.Collections.Generic.List`1[Microsoft.Security.ApplicationId.PolicyManagement.PolicyModel.FileInformation]>
    [-AllowWindows]
    [-RuleType <System.Collections.Generic.List`1[Microsoft.Security.ApplicationId.PolicyManagement.RuleType]>]
    [-RuleNamePrefix <String>]
    [-User <String>]
    [-Optimize]
    [-IgnoreMissingFileInformation]
    [-Xml]
    [-ServiceEnforcement <ServiceEnforcementMode>]
    [<CommonParameters>]

New-AppLockerPolicy
    [-AllowWindows]
    [-RuleType <System.Collections.Generic.List`1[Microsoft.Security.ApplicationId.PolicyManagement.RuleType]>]
    [-RuleNamePrefix <String>]
    [-User <String>]
    [-Optimize]
    [-IgnoreMissingFileInformation]
    [-Xml]
    [-ServiceEnforcement <ServiceEnforcementMode>]
    [<CommonParameters>]

The New-AppLockerPolicy cmdlet uses a list of file information to automatically generate a list of rules for a given user or group. Rules can be generated based on publisher, hash, or path information.

Run the Get-AppLockerFileInformation cmdlet to create the list of file information.

By default, the output is an AppLockerPolicy object. If the Xml parameter is specified, the output will be the AppLocker policy as an XML-formatted string.

C:\PS>Get-ChildItem C:\Windows\System32\*.exe | Get-AppLockerFileInformation | New-AppLockerPolicy -RuleType Publisher, Hash -User Everyone -RuleNamePrefix System32

                                Version RuleCollections                         RuleCollectionTypes
                                ------- ---------------                         -------------------
                                      1 {Microsoft.Security.ApplicationId.Po... {Exe}

This example creates an AppLocker policy that contains allow rules for all of the executable files in C:\Windows\System32. The policy contains publisher rules for those files with publisher information and hash rules for those that do not. The rules are prefixed with System32: and the rules apply to the Everyone group.

C:\PS>Get-ChildItem C:\Windows\System32\*.exe | Get-AppLockerFileInformation | New-AppLockerPolicy -AllowWindows -RuleType Path -User Everyone -Optimize -XML
<AppLockerPolicy Version="1"><RuleCollection Type="Exe" EnforcementMode="NotConfigured"><FilePathRule Id="31B2F340-016D
-11D2-945F-00C04FB984F9" Name="%SYSTEM32%\*" Description="" 10 UserOrGroupSid="S-1-5-21-3165297888-301567370-576410423-
13" Action="cAllow"><Conditions><FilePathCondition Path="%SYSTEM32%\*" /></Conditions></FilePathRule></RuleCollection>
</AppLockerPolicy>

This example creates an XML-formatted AppLocker policy for all of the executable files in C:\Windows\System32. The policy contains only path rules. The rules are applied to the Everyone group. The Optimize parameter indicates that similar rules are grouped together where possible. The AppLocker policy trusts all local Windows components.

C:\PS>Get-AppLockerFileInformation -EventLog -LogPath "Microsoft-Windows-AppLocker/EXE and DLL" -EventType Audited | New-AppLockerPolicy -RuleType Publisher,Hash -User ___domain\FinanceGroup -IgnoreMissingFileInformation | Set-AppLockerPolicy -LDAP "LDAP://DC13.TailspinToys.com/CN={31B2F340-016D-11D2-945F-00C04FB984F9},CN=Policies,CN=System,DC=WingTipToys,DC=com"

This example creates a new AppLocker policy from the audited events in the local Microsoft-Windows-AppLocker/EXE and DLL event log. All of the rules will be applied to the ___domain\FinanceGroup group. Publisher rules are created when the publisher information is available, and hash rules are created if the publisher information is not available. If only path information is available for a file, then the file is skipped because the IgnoreMissingFileInformation parameter is specified, and the file is included in the warning log. If the IgnoreMissingFileInformation parameter is not specified when file information is missing, then the cmdlet exits because it cannot create the specified rule type. After the new AppLocker policy is created, the AppLocker policy of the specified Group Policy Object (GPO) is set. The existing AppLocker policy in the specified GPO will be overwritten.

This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutBuffer, -OutVariable, -PipelineVariable, -ProgressAction, -Verbose, -WarningAction, and -WarningVariable. For more information, see about_CommonParameters.