CHFI OS and File System Forensics Practice Question

You are a forensic investigator responding to an incident on a Windows 10 workstation used by a finance manager. The user reports that a critical spreadsheet containing quarterly budget data was accidentally deleted from the Desktop yesterday at approximately 3:00 PM. The system has been used normally since then, and the user has not emptied the Recycle Bin. You have created a forensic image of the drive using FTK Imager. The Recycle Bin contains a file named 'Quarterly_Budget.xlsx', but it appears to be a shortcut (size 1 KB). The user insists the original file was several megabytes. You need to recover the original file. Which action should you take next?

⚠ Common exam trap

The trap is that candidates assume the Recycle Bin contains the actual file data, but the question tests the understanding that the Recycle Bin only stores a shortcut, and the real data is hidden in the `$Recycle.Bin` folder under a different name.

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

Search the $Recycle.Bin folder on the forensic image to locate the original file data, which may be stored under a different name.

When a file is moved to the Recycle Bin on Windows 10, the original file data is not stored in the Recycle Bin itself; instead, a hidden file (with a random name) is created in the `$Recycle.Bin` folder on the volume, and a shortcut (the visible entry) is placed in the Recycle Bin. The shortcut points to the hidden file, which retains the original data. Since the visible entry is only 1 KB, the actual file content must be located in the `$Recycle.Bin` folder under a different name, making option A the correct next step.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✓
Search the $Recycle.Bin folder on the forensic image to locate the original file data, which may be stored under a different name.
Why this is correct
On the forensic image, the $Recycle.Bin folder contains the original file data in a renamed storage file (typically $R...) while a companion $I... file preserves the original name and metadata; relying on the live Recycle Bin UI is insufficient because it only exposes a virtual view of these entries. Searching this hidden system folder directly is the correct first step because the file is still fully allocated and recoverable without carving or relying on volume snapshots.
✗
Restore a previous version of the Desktop folder from Volume Shadow Copy.
Why it's wrong here
Volume Shadow Copy (VSS) is a point-in-time recovery mechanism that only captures volume state at specific intervals; if the deletion occurred after the most recent shadow copy, the file will not be present, and mounting VSS from an image requires specialized tools. Even when a shadow copy exists, it is a secondary source compared to the Recycle Bin, which explicitly stores the deleted file's data and metadata on the same volume. Thus, checking VSS would be premature and less likely to succeed than the Recycle Bin.
✗
Use file carving techniques to recover the file from unallocated space on the Desktop.
Why it's wrong here
File carving attempts to recover files by scanning unallocated clusters for file signatures, but the recently deleted file is not yet unallocated—it is still resident in the $Recycle.Bin folder with its original data intact. Carving would also discard the filesystem metadata (filename, timestamps, original path) that is preserved in the Recycle Bin's $I file, and it is computationally expensive. Therefore, carving is only a fallback if the Recycle Bin entry is gone.
✗
Check the Recycle Bin on the live system; the file should be there and can be restored.
Why it's wrong here
Checking the live Recycle Bin is problematic from a forensic perspective because the UI only displays a shortcut-like reference to the stored file, while the actual data resides in a hidden $Recycle.Bin system folder; the act of 'restoring' it would modify live system state and potentially overwrite evidence. Furthermore, the live Recycle Bin may have already been purged by the user or via disk cleanup, making the forensic image the only reliable source. The correct approach is to examine the image's $Recycle.Bin folder, not the live interface.

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CHFI OS and File System Forensics Practice Question

Why each option matters

Option-by-option breakdown

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