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New-AppLockerPolicy

Tue Jan 29, 2019 9:24 pm

NAME New-AppLockerPolicy



SYNOPSIS

Creates a new AppLocker policy from a list of file information and other rule creation options.





SYNTAX

New-AppLockerPolicy [-FileInformation] <List<FileInformation>> [-IgnoreMissingFileInformation] [-InformationAction {SilentlyContinue | Stop |

Continue | Inquire | Ignore | Suspend}] [-InformationVariable <System.String>] [-Optimize] [-RuleNamePrefix <String>] [-RuleType <List<RuleType>>]

[-ServiceEnforcement <System.String>] [-User <String>] [-Xml] [<CommonParameters>]





DESCRIPTION

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.





PARAMETERS

-FileInformation <List<FileInformation>>

Specifies a file that can contain publisher, path, and hash information. Some information may be missing, such as publisher information for an

unsigned file.



Required? true

Position? 1

Default value none

Accept pipeline input? true (ByValue, ByPropertyName)

Accept wildcard characters? false



-IgnoreMissingFileInformation [<SwitchParameter>]

Specifies that, if a rule cannot be created for a file because of missing file information, then evaluation of the remaining file information

will continue and a warning log of the files skipped will be generated.



Required? false

Position? named

Default value none

Accept pipeline input? false

Accept wildcard characters? false



-InformationAction [<System.Management.Automation.ActionPreference>]

Specifies how this cmdlet responds to an information event. The acceptable values for this parameter are:



-- SilentlyContinue

-- Stop

-- Continue

-- Inquire

-- Ignore

-- Suspend



Required? false

Position? named

Default value none

Accept pipeline input? false

Accept wildcard characters? false



-InformationVariable [<System.String>]

Specifies a variable in which to store an information event message.



Required? false

Position? named

Default value none

Accept pipeline input? false

Accept wildcard characters? false



-Optimize [<SwitchParameter>]

Specifies that similar rules will be grouped together.



Required? false

Position? named

Default value none

Accept pipeline input? false

Accept wildcard characters? false



-RuleNamePrefix [<String>]

Specifies a name to add as the prefix for each rule that is created.



Required? false

Position? named

Default value none

Accept pipeline input? false

Accept wildcard characters? false



-RuleType [<List<RuleType>>]

Specifies the type of rules to create from the file information. Publisher, path, or hash rules can be created from the file information.

Multiple rule types may be specified. Therefore, that there are backup rule types if the necessary file information is not available.



For example, if Publisher, Hash is specified for this parameter, then the hash rules are applied when publisher information is not available.



Required? false

Position? named

Default value none

Accept pipeline input? false

Accept wildcard characters? false



-ServiceEnforcement [<System.String>]

Specifies whether the AppLocker policy for EXE and DLL rule collections applies to non-interactive processes. The acceptable values for this

parameter are:



-- NotConfigured

-- Enabled

-- ServicesOnly



Required? false

Position? named

Default value none

Accept pipeline input? false

Accept wildcard characters? false



-User [<String>]

Specifies the user or group to which the rules are applied. The acceptable values for this parameter are:



-- DNS user name (domain\\username)

-- User Principal Name (username@domain.com)

-- SAM user name (username)

-- Security identifier (S-1-5-21-3165297888-301567370-576410423-1103)



Required? false

Position? named

Default value none

Accept pipeline input? false

Accept wildcard characters? false



-Xml [<SwitchParameter>]

Specifies that the output of the AppLocker policy be as an XML-formatted string.



Required? false

Position? named

Default value none

Accept pipeline input? false

Accept wildcard characters? false



<CommonParameters>

This cmdlet supports the common parameters: Verbose, Debug,

ErrorAction, ErrorVariable, WarningAction, WarningVariable,

OutBuffer, PipelineVariable, and OutVariable. For more information, see

about_CommonParameters (http://go.microsoft.com/fwlink/?LinkID=113216).



INPUTS

Microsoft.Security.ApplicationId.PolicyManagement.PolicyModel.FileInformation







OUTPUTS

Microsoft.Security.ApplicationId.PolicyManagement.PolicyModel.AppLockerPolicy



AppLockerPolicy



System.String









EXAMPLE 1



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.





EXAMPLE 2



C:\\PS>Get-ChildItem C:\\Windows\\System32\\*.exe | Get-AppLockerFileInformation | New-AppLockerPolicy -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, and the Optimize parameter indicates that similar rules are grouped together where possible.





EXAMPLE 3



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.







RELATED LINKS

Online Version: http://go.microsoft.com/fwlink/?linkid=287250

Get-AppLockerFileInformation

Get-AppLockerPolicy

Set-AppLockerPolicy

Test-AppLockerPolicy