What Arsenal Image Mounter is

Many tools can open an image. AIM's difference is that it presents the image to Windows as a real disk, which means the operating system's own drivers handle the file system and features such as Volume Shadow Copies behave as they would on the original hardware. Writes are allowed in a temporary mode that records them in a differencing file, leaving the image untouched. The maker lists raw, forensic and virtual machine disk images, optical images and archives as inputs and the ability to identify, unlock, decrypt or suspend BitLocker volumes where the key or password is available.

Professional Mode is where the tool becomes an investigative platform. It can launch a disk image, a physical disk or a remote disk as a virtual machine, with bypasses for Windows authentication, DPAPI and S Mode so an examiner can see the system as the user saw it. It adds further shadow copy options, a file system driver bypass, Recon Reports and remote disk access through an agent. For an Indian lab the practical gain is in demonstration: showing a court what a desktop looked like is often more persuasive than a table of artefacts, provided the examiner records that the virtual machine is a reconstruction and not the original.

Primary applications

Where it is used

  • Mounting an E01 or raw image so other Windows tools can read it
  • Browsing Volume Shadow Copies inside an image to see earlier file versions
  • Unlocking or decrypting BitLocker volumes with lawfully held credentials
  • Booting an image as a virtual machine to view the user's desktop and applications
  • Testing software behaviour against a copy of the evidence without touching the original

Who uses it

  • Computer forensic examiners who need Windows to read an image natively
  • Incident responders reconstructing a compromised system
  • Examiners preparing courtroom demonstrations
  • Students learning how mounting and virtualisation fit into an examination

Capabilities and limits

Major capabilities

  • Mounts raw, forensic and virtual machine disk images as complete disks in Windows
  • Temporary write support through replayable differencing files
  • BitLocker identification, unlocking, full decryption and suspension
  • Volume Shadow Copy mounting, including an NTFS driver bypass
  • Optical image and archive mounting and command line tools in Free Mode
  • Virtual machine launch from images, physical disks and remote disks with authentication, DPAPI and S Mode bypasses in Professional Mode
  • Recon Reports, extra shadow copy options and AIM Remote Agent in Professional Mode
  • Exposes mounted disks as virtual VHDX files

Technical limitations

  • Windows only
  • A launched virtual machine is a reconstruction; the examiner must document that it is not the original system
  • Authentication bypasses apply to the copy inside the virtual machine and must sit within the legal authority for the examination
  • Image formats are described in general terms on the page rather than listed
  • Open source status of the current product is not stated on the page checked

Learning with DFRTI

Independent professional education covering the principles and workflows of Arsenal Image Mounter. DFRTI is not a vendor training centre and its courses are not vendor certifications.

Before you learn it

  • Disk images, partitions and file systems
  • Windows features such as BitLocker and Volume Shadow Copies
  • Virtualisation basics

Disciplines

Courses that cover this tool

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Go deeper with DFRTI

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