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

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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