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#WEBROOT REMOVAL TOOL FOR UEFI INFECTION WINDOWS 10#
#WEBROOT REMOVAL TOOL FOR UEFI INFECTION SOFTWARE#
#WEBROOT REMOVAL TOOL FOR UEFI INFECTION CODE#

Second-stage attack (OS Kernel-Mode) – The payload with elevated privileges runs the next part of the attack which infects the Hardware Abstraction Services.

#WEBROOT REMOVAL TOOL FOR UEFI INFECTION CODE#

These are remote code exploits which trigger an escalation of privileges for the virus.

First-stage of attack (OS User-Mode) – The first-stage attack comes from an app exploit which delivers a dangerous payload that starts the infection process.

The demonstrated infection route follows this complex strategy:

#WEBROOT REMOVAL TOOL FOR UEFI INFECTION SOFTWARE#

One of them includes several code execution vulnerabilities which breaks the virtualization isolation provided by the Intel Software Guard Extensions (SGX) and other related technologies.ĭuring a complex multi-stage payload delivery the UEFI ransomware can infect via several layers of exploits that deliver the dangerous payload.

The infection can be performed via different complex methods. Fortunately, to this date, no actual attack campaigns have reported.

This virus illustrates that even with different security features enabled such dangerous attacks are possible. It’s interesting to note that one of the main reasons for implementing the UEFI firmware over the old BIOS standard was the heightened security measures. The shown proof-of-concept code displays a ransomware note when the computer boots with the following message:

Hardware Persistence – By infecting the UEFI firmware the virus code can be very difficult to remove.

Sabotage – Such ransomware can modify vital settings which can destroy hardware components.

The UEFI firmware is in control of the hardware and it is responsible for a lot of low-level system functions.

Deep Malware Infections – Such infections can be extremely difficult to remove after a succesful intrusion.

A succesful UEFI ransomware attack can lead to the following consequences: Still the use of specialist anti-malware solutions can enforce a strng protective layers that can prevent such virus infections. There are several defense mechanisms that are going to be unveiled in the upcoming talk that can guard against possible intrusions. All of them allow computer hackers to compromise the security of their targets and as a consequence gain a very deep access to the machines. Over the last few years, there have been numerous publications and warnings of UEFI vulnerabilities which can lead to such infections. In addition, all security features have been activated: Secure Boot, Virtual Secure Mode (VSM) and the Device Guard running with its default policy.

#WEBROOT REMOVAL TOOL FOR UEFI INFECTION WINDOWS 10#

Proof-of-concept demonstrations were made available in which we can see victim machines that run an Intel Skylake CPU with Microsoft Windows 10 Enterprise (build 1607) with all updates installed.

This is the next-generation replacement for the BIOS (Basic Input/Output System) which initializes the hardware during the boot process.īy infecting this part of the system the hackers can potentially even cause physical damage to the hardware components by configuring dangerously high voltages to the memory or processor (overclocking them). First of all, all security experts should consider that the virus is based on the concept of infecting the UEFI firmware. However, with the currently known data about it, we have constructed a removal guide which will help users protect themselves from any possible abuse. Further details about the virus are going to be disclosed in an upcoming conference. The UEFI Ransomware is a concept virus which has been demonstrated as part of a specialist security conference.