IT Forensics – Windows

In-depth forensic analysis of Windows’ hiberfil.sys – Reconstructing saved RAM contents

The hiberfil.sys file is used by Windows for hibernation. When the system enters hibernation, large portions of the RAM are written to the hard drive. As a result, depending on the system’s state, the file may contain valuable information about running processes, open documents, network connections and other volatile data.

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As part of a professional IT forensic investigation, the hiberfil.sys file is analysed alongside other memory, registry and file system artefacts. Only a comprehensive analysis enables a reliable technical assessment.

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 examination is 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

Analysis of hiberfil.sys for processes, memory objects, document fragments and other relevant artefacts; correlation with RAM images, pagefile.sys, registry and file system data; and full documentation of all investigation steps.

Typical areas of application

•Incident Response
•Malware and rootkit investigations
•Reconstruction of user activities
•Analysis of volatile data
•Employment law proceedings
•Expert reports for the courts

This is how the analysis works

Once a forensic image has been created, the hiberfil.sys file is extracted and analysed using specialised forensic tools. The results are then cross-referenced with other digital evidence.

Why is hiberfil.sys important?

It may contain information that was present in the system’s working memory but is no longer available after a restart. As a result, it often provides a valuable complement to traditional digital forensics.

Frequently Asked Questions

What information might be contained in hiberfil.sys?+
Depending on the system state, this may include, amongst other things, running processes, memory areas, document fragments and other volatile data.
Is the hiberfil.sys file present on every Windows system?+
No. That depends, amongst other things, on whether hibernation is enabled and being used.
Are you working with the original data carrier?+
No. Only a forensic copy or forensic image is analysed.
Is the hiberfil.sys file on its own sufficient for an expert report?+
No. It is always analysed alongside other Windows artefacts.

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LanCologne – Windows Forensics in Cologne

Do you need a professional analysis of a Windows hibernation file 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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