PowerISO VHD File Format parsing CXSPARSE record memory corruption vulnerability

Talos Vulnerability Report TALOS-2022-1644 PowerISO VHD File Format parsing CXSPARSE record memory corruption vulnerability December 7, 2022 CVE Number CVE-2022-41992 SUMMARY A memory corruption vulnerability exists in the VHD File Format parsing CXSPARSE record functionality of PowerISO PowerISO...

Frostbyte - FrostByte Is A POC Project That Combines Different Defense Evasion Techniques To Build Better Redteam Payloads

FrostByte Progolue: In the past few days I've been experimenting with the AppDomain manager injection technique had a decent success with it in my previous Red Team engagements against certain EDRs. Although, this is really good for initial access vector, I wanted to release a POC which will help...

The Hermit Kingdom’s Ransomware Play

The Hermit Kingdom’s Ransomware play By Trellix · May 3, 2022 With a special thanks to @ValidHorizon who helped and shared information In February 2016, news broke about what is now known as the ‘Bangladesh Bank Heist’. Hackers attempted to transfer nearly one billion USD through the SWIFT system...

How to use vhd-util to Scan for Orphaned or Bad VHD Files

This article details how to use vhd-util to scan for Orphaned/Bad VHD Files. Requirements CLI connection to XenServer host, preferably through an SSH client Basic CLI command usage grep, less, tail LVM, EXT, or NFS storage type...

Ventoy - A New Bootable USB Solution

Ventoy is an open source tool to create bootable USB drive for ISO/WIM/IMG/VHDx/EFI files. With ventoy, you don't need to format the disk over and over, you just need to copy the image files to the USB drive and boot it. You can copy many image files at a time and ventoy will give you a boot menu...

Russian APT28 Hackers Using COVID-19 as Bait to Deliver Zebrocy Malware

A Russian threat actor known for its malware campaigns has reappeared in the threat landscape with yet another attack leveraging COVID-19 as phishing lures, once again indicating how adversaries are adept at repurposing the current world events to their advantage. Linking the operation to a...

Russian APT28 Hackers Using COVID-19 as Bait to Deliver Zebrocy Malware

A Russian threat actor known for its malware campaigns has reappeared in the threat landscape with yet another attack leveraging COVID-19 as phishing lures, once again indicating how adversaries are adept at repurposing the current world events to their advantage. Linking the operation to a...

Citrix App Layering 4.x: PVS Connector Script to Convert VHD to VHDX

Introduction When publishing an image to PVS the Citrix App Layering PVS Connector allows for running a PowerShell script after an image in uploaded to the PVS Store and Added as a vDisk. This sample script is intended to show Citrix customers how this scripting can be used to increase...

Lazarus Group Brings APT Tactics to Ransomware

Targeted ransomware attacks are on the rise, usually perpetrated by financially motivated threat gangs, which often work in concert together. However, researchers said that a recent strain of ransomware, called VHD, can be linked to an unusual source: The Lazarus Group APT. According to researche...

Lazarus on the hunt for big game

We may only be six months in, but theres little doubt that 2020 will go down in history as a rather unpleasant year. In the field of cybersecurity, the collective hurt mostly crystallized around the increasing prevalence of targeted ransomware attacks. By investigating a number of these incidents...

Lazarus Group Surfaces with Advanced Malware Framework

The North Korea-linked APT known as Lazarus Group has debuted an advanced, multipurpose malware framework, called MATA, to target Windows, Linux and macOS operating systems. Kaspersky researchers uncovered a series of attacks utilizing MATA so-called because the malware authors themselves call...

Acquiring a VHD to Investigate

In a previous post we described some of the differences between on-premises/physical forensics and cyber investigations and those performed in the cloud, and how this can make cloud forensics challenging. That blog post described a method of creating and maintaining a VM image which can be...

Acquiring a VHD to Investigate

In a previous post we described some of the differences between on-premises/physical forensics and cyber investigations and those performed in the cloud, and how this can make cloud forensics challenging. That blog post described a method of creating and maintaining a VM image which can be...

Acquiring a VHD to Investigate

In a previous post we described some of the differences between on-premises/physical forensics and cyber investigations and those performed in the cloud, and how this can make cloud forensics challenging. That blog post described a method of creating and maintaining a VM image which can be...

Citrix Provisioning Console Error: 0x00000057 - Invalid Parameter

Citrix Provisioning does not support VHD based vDisks on 4K storage in any Citrix Provisioning product version. Microsoft's VHD file specification only supports a disk logical sector size of 512 bytes. A read/write access VHD on 4K disk will trigger read-modify-write emulation, which results in...

Backing Up Hyper-V Guest Cluster Based on VHD Set

Challenge VHD Set is a new shared Virtual Disk model for guest clusters in Windows Server 2016 and later. VHD Set files can be included in application-consistent checkpoints and backed up, but there are some limitations. Cause Please make sure the following requirements are met: Each guest VM...

Update Rollup 13 for System Center 2012 R2 Virtual Machine Manager

Update Rollup 13 for System Center 2012 R2 Virtual Machine Manager Introduction This article describes the issues that are fixed in Update Rollup 13 for Microsoft System Center 2012 R2 Virtual Machine Manager. There are two updates available for Virtual Machine Manager, one for the Virtual Machin...

Description of Update Rollup 2 for System Center 2012 R2 Service Provider Foundation

Description of Update Rollup 2 for System Center 2012 R2 Service Provider Foundation Summary This article describes the issues that are fixed in Update Rollup 2 for Microsoft System Center 2012 R2 Service Provider Foundation SPF. Additionally, this article contains the installation instructions f...

Update Rollup 4 for System Center 2012 R2 Virtual Machine Manager

Update Rollup 4 for System Center 2012 R2 Virtual Machine Manager Introduction This article describes the issues that are fixed in Update Rollup 4 for Microsoft System Center 2012 R2 Virtual Machine Manager VMM. There are two updates available for System Center 2012 R2 Virtual Machine Manager. On...

Update Rollup 3 for System Center 2012 R2 Virtual Machine Manager

Update Rollup 3 for System Center 2012 R2 Virtual Machine Manager Introduction This article describes the issues that are fixed in Update Rollup 3 for Microsoft System Center 2012 R2 Virtual Machine Manager. Two updates are available for System Center 2012 R2 Virtual Machine Manager. One update i...