IT Forensics · Linux

Forensic analysis of Docker containers – Conducting a forensically traceable assessment of containerised environments

Docker containers encapsulate applications within isolated runtime environments, thereby creating their own configuration, log and metadata structures, which differ from the traditional forensic analysis of a complete operating system.

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As containers are often short-lived and are decommissioned or removed once they have served their purpose, it is particularly important to secure container-related artefacts promptly in the event of such incidents.

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, as a matter of principle, carried out exclusively on a forensic copy, a forensic image or a data source captured in a technically equivalent manner that preserves the integrity of the evidence. The original evidence remains unchanged and is stored in a manner that preserves its integrity.

Our services

We back up and analyse Docker container configurations, associated logs and runtime metadata, and use this information to reconstruct which containers were active at what time and what actions took place within them.

Typical areas of application

Investigation of compromised containerised applications
Reconstruction of the container runtime history
Analysis of container configurations for security vulnerabilities
Investigation into data exfiltration from containerised environments
Incident Response on Linux Systems
Judicial and non-judicial expert reports

This is how a Docker container analysis works

Where possible, running containers are first documented in their current state before a backup is taken of the container file systems, configurations and logs. This data is then systematically examined for anomalies and for indications of usage over time.

Why is Docker container analysis relevant to forensic investigations?

Container environments are increasingly becoming the target of attacks, for example through the exploitation of misconfigurations or vulnerable base images, which is why a forensic analysis requires specialist knowledge of containers.

As container file systems often exist only temporarily, it is crucial to back them up promptly so as not to lose relevant evidence when a container is closed or removed in the normal course of events.

Frequently Asked Questions

Is data retained after a container has been stopped?+
This depends on the configuration; without persistent storage, any changes made to the writable container layer will be lost when the container is removed.
Can deleted Docker containers still be examined?+
To some extent, provided that any associated images, volumes or host logs are still available that allow conclusions to be drawn about the deleted container.
Does this analysis differ from traditional system forensics?+
Yes, container-specific concepts such as layered file systems and orchestration require a tailored approach.

LanCologne – Linux Forensics Cologne

Do you require a professional forensic investigation into „forensic analysis of Docker containers"? LanCologne can assist you with the court-admissible preservation of digital evidence and the traceable analysis of relevant Linux artefacts.

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