Digital Forensic Survival Podcast

Latest Episodes:

DFSP # 329 - Shellbags Jun 07, 2022

Show notes

This week is a back to basics episode where I cover Windows shell bags. This is a core Windows artifact that gets included in pretty much every file use and knowledge investigation. Any investigation where you’re looking to tie a specific account to directory access activity. Like most Windows artifacts you must know how user interaction affects the artifact in order to properly interpreted as evidence and you must also be aware of any caveats or pitfalls that may affect your evidence. Spoiler alert, there is a huge one associated with Windows shell bags that I’ll cover at the end of the episode-it’s nothing new but if you’re unfamiliar with it you definitely need to know about it.

DFSP # 328 - Linux Executables May 31, 2022

Show notes

If you are accustomed to Windows forensics you may find you have to shift your way of thinking about executables when you are dealing with a Linux system. Unlike Windows, in Linux there is no fixed file extension to designate an executable. Everything on a Linux system of the file and any file can be executable, so where do you even begin? In this episode I am going to address how to approach Linux executables to help those newer to Linux exams deal with the nuances.

DFSP # 327 - Persistence Part 1 May 24, 2022

Show notes

One of the first things attackers attempt to accomplish on a compromised system is to establish persistence. Unless you are dealing with a denial of service attack, most other attacker goals are centered on maintaining the degree of control over a compromise system in order to use system resources for things like cryptomining or to maintain a foothold to further an attack strategy. This week I am going to talk about a fast triage methodology for persistence, which is one of the first triage strategies I normally recommend for a compromise assessment. Because I am focusing on a fast triage methodology I am going to focus on the artifacts most examiners will have readily at hand and how to make the most of them during the initial pass.

DFSP # 326 - MFT May 17, 2022

Show notes

This week I’m covering the Master file table as a core forensic artifact for Windows investigations. This artifact has value is both a primary and secondary artifact and offers opportunity to decode evidence in a number of different situations. In this episode I’m covering the forensic basics, some use cases and tools you can use to bring the value of the artifact to its full potential.

DFSP # 325 - Malware Triage Part 2 May 10, 2022

Show notes

This week of talking malware fast triage. These are the techniques that are short of malware reverse engineering and allow analysts to identify malware and also get a sense of what it is does. This is a necessary skill set for all DFIR professionals as you typically deal with malware and you need a way to do some basic forensics on it for context to advance your investigation. This is going to be a two-part episode where I first go over the foundational information you need to have four common malware triage tasks and the second part will go over specific methods, tools, and indicators for different types of artifacts.

DFSP # 324 - Malware Triage Part 1 May 03, 2022

Show notes

DFSP # 323 - SRUM Apr 26, 2022

Show notes

This week I’m talking about SRUM, a Windows artifact that you don’t hear that much about. It has a lot of great potential as evidence and it is something worth the time to check it out and see how it fits into your daily DFIR work.

DFSP # 322 - Live evidence integrity Apr 19, 2022

Show notes

This week is some thoughts on live evidence integrity. Years ago evidence validation was fairly standard with few exceptions. Nowadays it’s more of a challenge when considering live evidence collections either on scene, remotely or even in lab environments where physical level access to your evidence is becoming more the exception. It is something that needs to be part of your collection process as it may impact the reliability of your results.

DFSP # 321 - URL Leaks Apr 12, 2022

Show notes

This week I will talk about investigating data spill cases involving exposed URLs. This is a typical privacy investigation many incident response teams handle and I thought it would be useful to go over some standard guidelines for handling such cases. To be effective with these investigations you need to know how to determine liability and responsibility, a little Google foo, and a number of odds and ends concerning mitigation, containment and remediation strategies depending on what you are dealing with.

DFSP # 320 - Lateral MM and Event Logs Apr 05, 2022

Show notes

This week I’m going to cover detecting lateral movement using Windows event logs. This is not the Windows fast triage method I covered in previous episodes. This is more in-depth and focuses on specific attack tools and strategies seen in actual cases. Going into this level of detail is beyond the scope of a typical episode, however there is some research that has very granular details on the tools and methods you can use. I’ll have that coming up right after this.

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