“Month in february 2017. We had the rsa conference and one of the big things things that the rsa conference was the disclosure of a proof of concept uefi ransomware malware in bios. What else is new it turns out there is a vulnerability in a lot of current generation firmware that allows injecting this kind of malware ransomware into your bios. I think the demonstration used gigabyte bios.
But the vulnerability might exist with other manufacturers. So this is what the whole system looks like you have the os user mode. Which is where you exit the app let s say it s malicious payload embedded in an email attachment and then the first payload executes launching the application into os kernel mode. Which is where the second payload is executed and finally it s able to get into uefi firmware and embed a rootkit in your system.
So flashing. The bios is something that should be very highly protected and the reason for that is if any kind of malicious software is present in your bios. It just stays. There no antivirus program is going to scan your bios.
It s not an easy process and that s the first thing that loads up when you start your computer. I still think that ransomware is a very odd kind of payload to execute over here because usually bios malware tries to stay covert because that s one of the biggest advantages of placing a rootkit over there you can basically have your system and not have any clue that you have malware running and you re going to do your regular activities and let s say if the malware is a backdoor or spyware. It can steal your data give the attacker access to your system. While you re not aware.
And do all sorts of things like that that it turns out it is possible to run ransomware. There so even though it kind of beats. The point because having ransomware would mean that the malware gives us the way..
It is still a very enticing opportunity for cyber criminals. Who want to feel more menacing and want to ensure they get their payment. So a lot of users might be able to boot into safe mode and remove the rent or whatever. That s blocking their screen and restore their backups.
But once it gets into the bios. It s game over for a lot of people not to mention. It s going to scare off the everyday user in a way that s unprecedented because this is something you can fix by rebooting installing a new os. It s at the closest to hardware level of your system.
If you want you can go ahead and watch the entire rsa conference. I would recommend that if any of you are enthusiastic about security. You ll find a lot of good stuff here. They did talk about a lot of these points in their presentation.
And as you can tell there are a lot of manufacturers involved here so what s your takeaway from this what do you do to protect yourself from these kind of threats first of all the regular stuff still applies because they have to launch the malicious payload on your operating system. While you re using it but beyond that you should also make sure that your bios is fully up to date. And i know a lot of people don t do that some people just buy a computer and they just used whatever bios. It came with until the end of time.
And that s not a smart idea especially in this day. A so what you want to do is go to your manufacturers website check for the latest. Bios version and download that and flash..
Your bios upgrade your firmware. Because there might be a lot of fun durability x. . Like this that are being patched like in this case.
Gigabyte is already working on a pad. So i think it should be out soon. And as a little bonus since this is a short video here s something interesting that popped up lately the sanctions ransomware so there s nothing really special about this one other than the fact that it asks for a huge bitcoin payment. But i just thought the context was really funny.
So obviously. Russians don t give a rat s star star star about the us. And so this ransomware demonstrates that so this is the screen you get beware my sanctions and then there s this huge bear chomping down on the. Sanctions holding presumably this.
Us. Politician in his. Grasp so oh russians taking another shot at the us back to the cold war anyway. I just thought the cartoon was funny so i hope you enjoyed this video.
This is leo thank you for watching and as always ” ..
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“UEFI Ransomware infects your BIOS firmware. A major vulnerability has discovered in Gigabyte motherboards u0026 firmware from several other manufacturers. Update u0026 Flash your BIOS. (Announced at RSA conference, Feb, 2017)nnhttps://www.cylance.com/en_us/blog/uefi-ransomware-full-disclosure-at-black-hat-asia.htmlnn——————————————-nnThanks for watching! If you like what you see, check out the links below.nnPatreon: https://www.patreon.com/tpscnForum: https://forum.thepcsecuritychannel.com/nTwitter: https://twitter.com/leotpscnFacebook: https://www.facebook.com/tpscytnnAmbiment – The Ambient by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)nSource: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100630nArtist: http://incompetech.com/”,
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