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Windows Defender can now download malicious files and Windows Update can now run them

Home windows Defender can now down load destructive files and Home windows Update can now run them

In September, we noted that Windows Defender extra the ability to obtain data files from the command line making use of an application.

MpCmdRun.exe -DownloadFile -url [url] -road [path_to_save_file]

… It can be made use of to download any binary from the world wide web.

This function by itself is not an exploit, but you can use a script that launches the command line and enables you to import extra documents from the online using the native so-called “Dwelling-off-the-land” binary or LOLBIN.

A related function was discovered on Windows Update that allowed hackers to execute malicious files.

Bleeping Laptop is malicious on Home windows 10 devices by MDSec researcher David Middlehurst employing wuauclt to load from any DLL specifically crafted utilizing the adhering to command line alternatives: It studies that it has found out that it can execute some code.

wuauclt.exe / UpdateDeploymentProvider [path_to_dll] / RunHandlerComServer

This trick can be employed to bypass Home windows Person Account Regulate (UAC) or Home windows Defender Software Management (WDAC) and obtain persistence on an by now compromised system.

Immediately after producing the discovery, he also discovered that the hacker was the initial. I uncovered a sample Use it in wild methods.

In accordance to a former report, Microsoft has taken out the potential to obtain files from MpCmdRun.exe. It remains to be found how Microsoft will reply to the most up-to-date revelation.

Go through extra With this Bleeping laptop.

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