IT Forensics – Windows

Forensic analysis of Windows Prefetch files – identifying evidence of programme execution

Windows Prefetch files are among the most important artefacts in a Windows forensic investigation. They are created by the operating system to speed up the launch of frequently used programmes. At the same time, they provide valuable information about which applications were running on a system and when they were last launched.

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In the context of a professional IT forensic investigation, prefetch files are never examined in isolation. Only by analysing them in conjunction with other artefacts – such as the Windows Registry, event logs, the Master File Table (MFT), the USN Journal or LNK files – is it possible to make an objective assessment of the available digital evidence.

Why LanCologne?

Since its foundation, LanCologne has specialised in professional IT forensics. Our staff have decades of experience in the field of information technology and assist companies, solicitors, private individuals and, on a regular basis, the courts in the technical investigation of complex digital matters.

The analysis is always carried out exclusively on a forensic copy or a forensic image. The original evidence remains unchanged and is stored in a manner that preserves its evidential integrity.

Our services

We analyse Windows prefetch files, reconstruct programme executions, evaluate time-related information and correlate the results with other Windows artefacts. The aim is to produce a verifiable technical reconstruction of relevant user and system activities.

Typical areas of application

Record of programmes completed
Investigation into potential malware
Reconstruction of user activities
Incident Response
Allegations of manipulation
Employment law proceedings
Expert reports for the courts

This is how a prefetch forensic analysis is carried out

Once a forensic image has been created, any existing prefetch files are analysed and compared with other artefacts. The results are placed in chronological order and contextualised within the overall investigation. All stages of the investigation are fully documented.

Why are prefetch files so important?

Prefetch files often provide valuable clues as to whether and when programmes have been run on a Windows system. However, their significance can only be fully understood through a comprehensive analysis of all relevant artefacts. Individual prefetch entries must therefore not be assessed in isolation.

Frequently Asked Questions

What are Windows prefetch files?+
Files generated by the operating system that contain information about programme executions.
Is the original system being examined?+
No. The analysis is carried out exclusively on a forensic copy or a forensic image.
Can prefetch files be missing?+
Yes. Depending on the version of Windows, system settings or usage, prefetch files may be missing or only partially present.
Are prefetch files sufficient for an expert report?+
No. They are always analysed alongside other Windows artefacts.

LanCologne – Windows Forensics in Cologne

Do you need a professional analysis of Windows prefetch files or other Windows artefacts? LanCologne can assist you with the forensically sound preservation of digital evidence and the objective analysis of complex Windows systems.

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