Digital Forensics Tools: The Ultimate Guide (2024)

Digital forensics tools have improved a lot in the past several years. With these advances, the digital forensics community now has many tool options for each phase of an investigation.

In fact, there can be a lot of options to keep track of.

That’s why we wanted to bring together the ultimate guide to DFIR tools—highlighting options available to examiners and the best time to use them.

The advancements in digital forensic tools over the years have largely been driven by two things to meet evolving investigation needs: competition between more forensic software developers and the maturation of the digital forensics open source and research communities.

When it comes to the rise in competition between software providers, IDC has created a few in-depth reports comparing digital forensic tools for both private-sector cyber security professionals and public-sector digital investigators. Their recent MarketScape report found Magnet Forensics to have the highest capabilities of any digital forensic tool. 

As for the maturation of the digital forensics research community, conferences like the Digital Forensics Research Workshop, the the Scientific Working Group on Digital Evidence (SWGDE), and the Magnet User Summit have been great opportunities for the community to get together and share knowledge and pain points. Companies like Magnet Forensics support these communities with resources and data sets and provide an easy way for the community to capture, re-use, and share new artifact knowledge. Instead of gatekeeping, software companies working with the digital forensics community have led to rapid advancement in all types of digital forensic tools. Whether closed or open-source, free or paid, we’re bringing you a comprehensive list of digital forensic tools to help you kit out a digital forensic laboratory of any size.

This guide will focus on the tools needed to build a functioning general-purpose laboratory in the public or private sector. 

Digital Forensics Tools

Typically, a digital forensics laboratory will have several digital forensics tools that do the same task. For example, several overlapping tools allow the laboratory to validate investigation results (see Josh Brunty’s guide and SWGDE validation guidelines).

Whatever tooling you choose, ensure that you can get the same results using different methods. If you can’t, you must be able to explain why you can’t. Validation may mean manual parsing, conducting research, and reaching out to the forensics community.

When choosing digital forensics tools for your toolkit, think about each part of your investigation workflow and the tasks that normally need to be completed. Comprehensive digital investigation toolkits support the most common investigation tasks. These toolkits can often include third-party or user-created artifacts or modules. Custom artifacts let a lab quickly develop parsers for newly observed sources of evidence, regardless of the underlying software tool. It’s worth learning how to write custom artifacts for your preferred toolkits.

Free, open-source forensics software tools are excellent for validating results. But outfitting an entire lab with free software can lead to a patchwork of tools that don’t always work together. Sometimes, this can make for complex and inefficient workflows and reduce your time to evidence. It’s recommended that a professional lab have at least one fully comprehensive software solution, like Magnet One, to work quickly through cases with a minimum of downtime. Using tools that are well-recognized by courts will also save time, and smooth testimony at trial.

The following digital forensic tool lists are categorized using the first Digital Forensic Research Workshop investigative process for digital forensic science. Although proposed in 2001, the procedural concept is holding up surprisingly well. Let’s look at digital forensic tools and where they fit in identification, preservation, collection, examination, and analysis.

Identification

This is probably the most challenging part of any investigation. Before we can respond to an incident, we must detect it. Reporting could come from victims opening a case, a financial audit or an admin checking their logs.

In criminal investigations, cases are typically reported to law enforcement. For private organizations, however, incident detection is critical. Passive measures like honeypots and canary tokens can greatly assist in alerting an organization to a compromise, while a tool like Magnet Axiom Cyber helps with threat-hunting Windows event log analysis and incident response tasks.

Increasingly, users identify security incidents from threatening messages on the screen. Ransomware encrypts user files and demands payment for the decryption key. If you or your organization have been a victim of ransomware, find information and tools from Magnet Axiom Cyber. Continue with your incident response plan and make copies of all data. To learn more about ransomware, see this excellent talk by Cindy Murphy. For an in-depth report on global threats, see the CrowdStrike 2024 Global Threat Report.   

Tools to assist in incident identification are either used pre- or post-incident. Pre-incident monitoring often results in more data and higher fidelity. Post-incident analysis requires much more challenging event reconstruction, often with limited data. Corporate environments have control of their systems and may enable pre-incident monitoring with additional logging and detection systems. Law Enforcement, however, almost always deals with post-incident default (or disabled) logging and anti-forensics.

Magnet Axiom Cyber is the industry leader in pre-incident monitoring and post-incident acquisition. It allows you to recover deleted data and investigate digital evidence from mobile, computer, cloud, and vehicle sources all in one case file with powerful analytics.

Preservation

Unfortunately, an incident has been identified, and you now need to create a case, start documentation, and preserve any related data.

Case Management, Documentation, and Reporting

Most comprehensive digital investigation toolkits require creating a “case” in the software before adding exhibits. Case management within your primary analysis tool may be possible. However, consider overall lab management and collaboration. An organization-wide case management system will provide better visibility and coordination.

Regardless of where case management tools are placed, ensure your investigators can easily document their processes and are supported in writing comprehensive reports. This support implies access to a knowledge base of commonly used legislation, definitions, references, and procedures.

Case management, documentation, and reporting requirements have advanced beyond an MS Word document. Here are tools to assist in the quality and security of investigation communications.

Magnet ONE is the gold standard tool here; improve efficiency and breakit improves efficiency and breaks down silos by enabling stakeholders agency-wide to manage, collaborate, analyze, and report on all aspects of your digital investigations.

Help first responders collect evidence from witnesses on-scene without asking them to give up their devices with Magnet Shield.

Digital Forensic Imaging

Forensic imaging is both common and important in digital forensic investigations. But imaging is not easy. Resources like Practical Forensic Imaging are great for understanding the imaging process and challenges.

Forensic Hardware Write Blocker and Disk Imagers

Hardware write-blockers are highly reliable devices and typically only fail when misconfigured. Some write blockers allow you to disable write-block functions and use the device as a read/write hardware bridge. Be sure to include usage training and testing when adding hardware write blockers to your toolkit. It is crucial to have a standard testing methodology that your local court accepts and regularly test your

Most Linux-based forensic operating systems include software (kernel-level) write-blocking. There are several commercial write blockers for Windows, but they tend to be more expensive than hardware write blockers. If you choose a software write-blocker, ensure a testing and validation procedure is in place. 

Disk Acquisition Software

Hardware and software write blockers need to be paired with imaging software. Hardware disk imagers have disk imaging software built-in; some external write blocker devices do not. Correct imaging is critical in any investigation, and the community is lucky to have such solid tools available for free.

Magnet Acquire is the best tool for physical and logical disk imaging as well as mobile device imaging. It allows investigators to quickly and easily acquire forensic images of any iOS or Android device, hard drive, and removable media. Best of all it is completely free.

With disk acquisition, be aware of how the acquisition software treats bad clusters. For example, some software may write 0’s where disk read fails. Others may skip and not write anything to the image. Imaging error response can lead to two different images from the same failing disk. Configure your imaging software to respond to errors according to your lab’s SOP. Unfortunately, imaging software often does not allow error configurations and may not document their read failure procedure. In that case, you will need to test responses from different software and choose those that fit your lab the best.

RAM Acquisition Software

Like disk imaging, laboratories should acquire RAM acquisitions from case-related systems. Random Access Memory (RAM) contains information about the system and user activities since the last time the computer was shut down. This might include information that will never be written to disk. As such, it can be a valuable source of evidence for investigators.

RAM is volatile, meaning that it changes quickly. If a computer or device is shut down, all data in RAM is cleared and cannot easily  be recovered. First responders need the tools and training to collect a RAM image from a live environment. Live Data Forensics is not easy and should only be done by those competent to do so.

Magnet DumpIt for Windows is a free, fast memory acquisition tool for Windows (x86, x64, ARM64).  This software, created by Comae Technologies, does not require a pre installed agent.  Machine states can be collected via DumpIt and its PowerShell interface to provide your organization with more flexibility.​ It generates full memory Microsoft crash dumps on the fly without having to trigger a Blue Screen of Death (BSOD).   

Magnet Response is a free and easy-to-use solution to quickly collect and preserve data from local endpoints before it is potentially modified or lost. A pre-set collection profile gives you the ability to target a comprehensive set of files and data relevant to incident response investigations, including RAM.  Key features: 

• Easy-To-Use: A guided two-step process and progress bar is straightforward for even non-technical users to use  
• Fast & Comprehensive: Collect and preserve data starting with the most volatile using the built-in Comae RAM capture (Magnet DumpIt) functionality, and volatile data and files commonly associated to cybercrime, such as Windows Event Logs, Registry Hives, Jumplist files, and many other log files in minutes – no need for multiple tools to get the IR data you need  
• Portable: It is comprised of a single executable file, is easily downloaded, and can be stored and run from a USB key   
• Collect by Keyword & Skip Large Files: configure free-form collections using your own set of keywords (or the defaults provided), with the option to limit the size of files collected to maintain speed  
• Consolidated Output: Output is consolidated and saved as a .zip file for easy delivery or processing and analysis in Magnet Axiom & Magnet Axiom Cyber  
• Data Integrity: An embedded hash value is provided to verify the integrity of the data 

Remember that RAM acquisition is complicated. You will need to load the tool into memory to acquire memory. As forensic examiners, we want to reduce the size of forensic tools in memory so we don’t overwrite valuable evidence. Also, if the system is on, the RAM contents are changing. Imaging the same RAM twice will never result in the same image (and hash value). Hash the RAM image after the acquisition, that hash becomes your ground truth.

Mobile Acquisition Software Digital Forensics Tools

Just like computer forensics, mobile forensics is split into acquisition and analysis. Recently, more analysis toolkits have included processing data from mobile devices. Acquisition, however, remains a significant challenge. Newer mobile devices are often secure, requiring advanced technologies such as Magnet GrayKey to acquire data from them.  

Older devices often have publicly released vulnerabilities and utilities to bypass disk protection. Commercial tools, while more user-friendly with extensive interfaces and resources, often include non-publicly released exploits for newer devices. In addition, tools like Magnet GrayKey provide much more complete data extraction from supported devices. Extracting a full file system contains significantly more information than a logical extraction.   

Magnet Acquire allows mobile device acquisition for both iOS and Android.

Collection / Examination / Analysis Digital Forensics Tools

Collection, examination, and analysis are theoretically separate concepts in the DFRWS process model, but multi-function digital forensics tools tend to cover some aspects of each. Multi-function tools help an investigator understand the data and its relation to the investigation question. From there, we tend to dig deeper into specific artifacts or even pivot to other more specialized tools for analysis.

We have our forensically sound acquisitions of all case-related devices. Most full-featured digital forensic tools will ask to create a case in the tool’s management system. All exhibits and data sources are typically added under a single case. Grouping exhibits by case keeps everything together, but tools like Magnet Axiom and Magnet Axiom Cyber can find similarities between data sources such as files, usernames, phone numbers, etc.

The following tools are the gold standard investigation tools used worldwide:

• Magnet Axiom — The industry standard: it lets you recover data from smartphones, computers, and the cloud and includes advanced analytics and reporting tools to help find case-related data faster.
• Magnet Axiom Cyber — Purpose-built for private sector acquisitions with covert remote collection and support for enterprise cloud apps and services.

Mobile Analysis Software

Handling mobile data structures is challenging due to their complexity and the varying formats employed by different manufacturers. Additionally, the rapidly evolving changes in the mobile environment, such as frequent OS updates and new security features, constantly require forensic experts to adapt and update their methods and tools.

Some of the full-featured tools listed previously have built-in mobile data analysis capability. Sometimes integration for mobile analysis feels like an add-on rather than the main investigation point. That’s useful for basic searching and analysis, but needing more in-depth functionality is common. The following tools appear to put mobile device data analysis first, including the challenges that come with it.

• Magnet Axiom — yes, we’ve listed this before, but Axiom is fully-integrated with Graykey, and processing mobile device data feels like a first-class workflow instead of an add-on. Using Axiom also lets you take advantage of Magnet custom artifacts for applications and data structures that are not supported.
• Magnet Axiom Cyber — data reduction with keywords, hash lists, and advanced picture and video analysis.

When looking for a mobile analysis tool, consider whether the tool can parse common as well as trending data structures, an ability to customize or get support for case-specific data structures, and how easily (and comprehensively) the tool allows you to search and visualize the data. With mobile data analysis, you’re looking for updates more often than with computer analysis.

eDiscovery

eDiscovery solutions focus more on litigation and discovery workflows. They have feature sets that are often useful for any digital forensic investigation. It is common to see eDiscovery software used with comprehensive toolkits described above. The scope of eDiscovery can vary, and the tools required will as well. We’ve talked about the anatomy of an eDiscovery investigation before. You’ll need a tool that helps with data collection, reduction, and review.

Magnet Axiom Cyber allows for covert remote device acquisition, data reduction with keywords, hash lists, and advanced picture and video analysis. After data reduction, Axiom Cyber produces a load file for eDiscovery review platforms.

Modern eDiscovery tools are very powerful and tend to prefer cloud-based systems. Cloud-based systems make processing much faster and allow for advanced automation and machine learning. Each tool will work great for standard workflows. Which one works best for you depends on the data types you tend to work with and your goals. Almost all eDiscovery tools are attempting to use machine learning for classification. The best model for you will be the one that most closely matches your data.

Open-Source Intelligence

In investigations, it’s increasingly common that some sort of open-source intelligence (OSINT) is necessary. In other words, looking up publicly available information online to help build timelines, corroborate evidence, and sometimes blatantly get a confession.

Magnet Web Page Saver can act as a browser and allows you to take full-page snapshots, including source files, an acquisition report, timestamping, and automatic file hashing. It also accepts a list of URLs to render and acquire automatically. If you ever take screenshots of web pages, this is a must-have.

Training/Community

We’re not quite done! The most valuable piece of your kit is you (and your team). Hardware, software, automation, and artificial intelligence can get you far. Still, a well-trained investigator must put the puzzle together and tell the story. Invest in your investigators.

• Magnet Forensics Training Programs — basic through advanced training on all aspects of digital investigation offered online and in-person, also offers several Magnet-specific certification courses. Some of the most well-regarded courses in the industry.
• SANS — an extensive range of high-quality training on information security and digital investigation topics.
• NW3C — basic through advanced training related to various types of crime investigation. Often free for Law Enforcement.
• ECTEG — develops basic through advanced digital investigation training in the European Union. Law Enforcement from any country can request free training from ECTEG.

Similarly, the digital forensics community is relatively small but very active. There are some great resources like This Week in 4n6, DFIR Training, and About DFIR. Public and private sector experts often share information and resources and answer questions at the DFIR Discord as well as Forensic Focus.

If you are ready to collaborate and share resources with the community, check out Use GitHub to get started in the DFIR Community below.

Conclusions

That about does it for the ultimate guide to DFIR tools in 2024! It’s a fantastic community with a rapid development. No list can do justice to all the great work, but this should be enough to get any digital forensic laboratory started. Check back often to see what’s new. And don’t be afraid to search for specialty tools on GitHub. You never know where you will find the next big break in the case. Keep your options open.