SANS Digital Forensics and Incident Response Blog: Category - Evidence Analysis

6 Hex Editors for Malware Analysis

Hex editors allow examining and modifying a file at the low-level of bytes and bits, usually representing the file's contents in hexadecimal form. Some editors distinguish themselves at helping the user derive meaning from the examined file, extracting ASCII and Unicode contents, searching for patterns, recognizing common structures, and so on. There are lots of hex editors out there; I want to mention a few that I find particularly useful for analyzing malware and examining malicious document files.

FileInsight

FileInsight is a free hex editor from McAfee Labs that runs on Microsoft Windows (download zip file). As expected, it can perform

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How To - Digital Forensics Copying A VMware VMDK

Having recently seen a number of requests on the security and forensic list servers that I participate in requesting recommendations / procedures for copying the disk (VMDK) for a specific Virtual Machine (VM) within a VMware environment for analysis in an incident response, I put together a quick How To in effort to provide some insight in to a few of the methods that I have used.

The Game Has Clearly Changed With Virtualization

Most often the files associated with a given VM are not stored locally on the physical server running ESX or ESXi and the respective VM. It is important to understand that in order to use many of the more powerful features of VMware such as vMotion and DRS the files for the VM's must reside on shared storage that is reachable from each ESX or ESXi server that needs to interact with it. Hence, when

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Did Las Vegas Police Fumble Critical Digital Forensics in High Profile Shooting Case?

While in a re-certification class at SANS Network Security, a local news story catches my attention. It's a coroner's inquest into the death of Erik Scott, who was shot here in July outside a Costco store by officers of the Las Vegas Metropolitan Police (LVMP) after a store employee spotted Scott's firearm, which he had a permit to carry.

There's limited time while we drink from the SANS fire hose to absorb the day's news events. But I picked up the following from an op-ed piece by Scott's father in the Las Vegas Sun. The dead man's family is harshly critical the investigative process, and not without justification, if William Scott's account is accurate.

The elder Scott says the investigation has been entirely internal, conducted by LVMP. Scott is an aerospace journalist who notes that if an airline pilot has an accident that results in a

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Quick Look - Cellebrite UFED Using Extract Phone Data & File System Dump

It is not the intent of this blog post to be an all-encompassing guide to the forensic analysis of an iPhone. Rather it is a look at some of the tools I use in my practice and how they can be applied to iPhone forensic analysis. That being said lets get to it.

Why would you use the Cellebrite File System Dump instead of the traditional Extract Phone Data ?

If the subject of your forensic analysis is collecting information regarding the telephone such as call logs, phone book, SMS, pictures, video and audio/music then you will find what you need using the standard Cellebrite processing found under "Extract Phone Data". However if you want to do a deep dive in to the file structure, Internet usage or look deep in to the applications that are being used on the device and perhaps run some of your "favorite forensic tools" against it, I highly recommend complimenting your traditional

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Dealing with Split Raw Images in Digital Forensics

Hal Pomeranz, Deer Run Associates

Lately I've been working with images from a client whose policy is to create their dd type images as a series of 2GB chunks- the so-called split raw format. While commercial forensic tools will typically handle this format easily, split raw images can present challenges for examiners using Open Source utilities and Linux command-line tools. With image sizes constantly increasing, recombining the individual chunks of a split raw image into a single, monolithic image file is not really practical either in terms of analyst time or disk space. Happily, there are some Open Source utilities that can make dealing with split raw images considerably easier.

The Sleuth Kit

The Sleuth Kit utilities have actually supported split raw format since v2. The trick is to use the "-i split" option

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