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

CSIRT-Collect is 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