CSIRT-Collect - PowerShell Script To Collect Memory And (Triage) Disk Forensics

A PowerShell script to collect memory and (triage) disk forensics for incident response investigations.

The script leverages a network share, from which it will access and copy the required executables and subsequently upload the acquired evidence to the same share post-collection.

Permission requirements for said directory will be dependent on the nuances of the environment and what credentials are used for the script execution (interactive vs. automation)

In the demonstration code, a network location of \Synology\Collections can be seen. This should be changed to reflect the specifics of your environment.

Collections folder needs to include:

subdirectory KAPE; copy the directory from existing install subdirectory MEMORY; 7za.exe command line version of 7zip and winpmem.exe

CSIRT-Collect

Maps to existing network drive - Subdir 1: “Memory” – Winpmem and 7zip executables Subdir 2: ”KAPE” – directory (copied from local install) Creates a local directory on asset Copies the Memory exe files to local directory Captures memory with Winpmem When complete, ZIPs the memory image Renames the zip file based on hostname Documents the OS Build Info (no need to determine profile for Volatility) Compressed image is copied to network directory and deleted from host after transfer complete New temp Directory on asset for KAPE output KAPE !SANS_Triage collection is run using VHDX as output format [$hostname.vhdx] VHDX transfers to network Removes the local KAPE directory after completion Writes a “Process complete” text file to network to signal investigators that collection is ready for analysis.

CSIRT-Collect_USB

Essentially the same functionality as CSIRT-Collect.ps1 with the exception that it is intented to be run from a USB device. The extra compression operations on the memory image and KAPE .vhdx have been removed. There is a slight change to the folder structure for the USB version. On the root of the USB:

CSIRT-Collect_USB.ps1 folder (empty to start) titled 'Collections' folders for KAPE and Memory - same as above

Execution: -Open PowerShell as Adminstrator -Navigate to the USB device -Execute ./CSIRT-Collect_USB.ps1