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Before proceeding with any removal process, ensure you back up all important data. This process might involve steps that could lead to data loss.
Several tools are specifically designed to detect and remove rootkits. For EFI rootkits, using a tool that can scan the firmware level is crucial.
-TDSSKiller by Kaspersky is a free tool that can detect and remove certain types of rootkits, including some that affect the boot process.
https://usa.kaspersky.com/content/custom/global...
-Malwarebytes Anti-Rootkit is another free tool that can be used to search for and remove rootkits from your computer.
https://www.bleepingcomputer.com/download/windo...
If the rootkit has compromised your UEFI firmware, resetting the firmware to its default settings might be necessary. This can often be done within your computer's BIOS settings. Look for an option to "Restore Defaults" or "Reset to Factory Settings." Note that the specific steps can vary depending on your device's manufacturer.
In some cases, merely resetting the firmware isn't enough. You might need to reflash the firmware with a clean version obtained from the device's manufacturer. This process can be complex and varies significantly between devices, so refer to your manufacturer's instructions for guidance.
After dealing with the firmware, it's a good practice to reinstall your operating system from a trusted source to ensure no malware remnants remain.
Enabling Secure Boot in your UEFI firmware settings can help prevent unauthorized code from running during the boot process, offering an additional layer of protection against future infections
https://learn.microsoft.com/en-us/microsoft-365...
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Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.