- Vhd to iso converter zip file#
- Vhd to iso converter windows 7#
- Vhd to iso converter zip#
- Vhd to iso converter windows#
To help understand what that means, I created a video that demonstrates several differences between a MOTW-tagged (in a ZIP) file and one that does not contain the MOTW tag (in a VHD): VHD/VHDX Files and Antivirus
Vhd to iso converter windows#
What does this mean from the end user's perspective? Any file contained within a VHD or VHDX file will not receive the same protections that Windows provides against files that originated from the Internet. The important difference is that the files contained within a VHD or VHDX container do not retain the MOTW of the container file. That is, the user double-clicks on the file to show its contents in Windows Explorer.
Vhd to iso converter zip#
VHD/VHDX Files and MOTWįrom a user experience perspective, starting with Windows 8, VHD and VHDX files can have a function similar to ZIP files.
Vhd to iso converter zip file#
If Windows Explorer or other compliant ZIP utilities are used to extract the contents of a ZIP file, each file contained within a ZIP file carries the MOTW of the ZIP file container. How does Windows know if a file originated from the Internet? It uses the MOTW tag associated with the file in question. Here's what a user might see when SmartScreen blocks an unsafe executable: Starting with Windows 10, Windows Defender SmartScreen restricts the execution of certain file types if they originated from the Internet. Here's what a user might see when opening a document in Protected View: Documents in Protected View are restricted in what they can do, thus reducing the attack surface of potentially dangerous documents. The recurring theme is that files that came from the Internet (e.g., a web page or an email) may be dangerous, and therefore should be treated with more caution.įor example, starting with Microsoft Office 2010, documents tagged with an MOTW that indicated that they came from the Internet are opened in Microsoft Office Protected View. This MOTW feature has evolved to handle more and more file types and scenarios. Mark of the Web (MOTW) was introduced in Windows XP SP2 and allowed Windows to tag files on the local file system with information about the Internet Explorer security zone from which the files originated. If a user simply double-clicks on a VHD or VHDX file that contains a specially crafted file system, they risk crashing Windows or worse, as illustrated below. VHD and VHDX files eliminate the requirement for physical access to a victim system.
![vhd to iso converter vhd to iso converter](http://kb.macrium.com/Uploads/Images/p2v/createisoimage.png)
However, many security concepts are negated when physical access to a system is granted. Physically plugging in a USB mass storage device with a corrupted file system was the obvious attack vector. VHD/VHDX and File System CorruptionĪfter fuzzing file system images with BFF, I was able to find several different ways to crash Windows as the result of it mounting a corrupted disk. VHDX (Virtual Hard Disk v2) images are functionally equivalent to VHD images, but they include more modern features, such as support for larger sizes and disk resizing. Once mounted, a VHD disk image appears to Windows as a normal hard disk that's physically connected to the system. Starting with Windows 8, a user can mount a VHD by simply double-clicking on the file.
Vhd to iso converter windows 7#
Windows 7 and newer systems include the ability to manually mount VHD files. Eventually, Microsoft Hyper-V adopted this disk image format. The VHD (Virtual Hard Disk) file format, originally introduced with Connectix Virtual PC, can store the contents of a hard disk drive.
![vhd to iso converter vhd to iso converter](https://www.w3xue.com/files/a20191/20190107093640272.png)
In this post, I describe some of the risks associated with these two file types. In particular, I focused on VHD and VHDX files on Windows systems. (The slides from my presentation are available in the SEI Digital Library.) Although my primary goal was to find bugs in kernel file-system-parsing code, a notable part of my research was investigating attack vectors.
![vhd to iso converter vhd to iso converter](https://jackstromberg.com/wp-content/uploads/2016/06/Convert-WindowsImage-and-Windows-Server-ISO-PowerShell-Execute-Function-Completed.png)
Recently, I gave a presentation at BSidesPGH 2019 called Death By Thumb Drive: File System Fuzzing with CERT BFF.