MOVED FROM /r/Computerviruses
Recently, I had a problem with Discord, where it randomly stopped working, would not download without being corrupted and so forth. Thinking this was the only problem and having found backdoors on my system from what I 'thought' was from their website, I cleaned it all off my system, deleted all traces, used Malwarebytes adware and malware scanners and deleted everything I could find.
Today having gave up with Discord, went to download my latest BIOS upgrade and found that the issues persists.
In image 1: You can see this strange download screen I get whenever I download a file. I have also tested this in Edge etc. And get the same screen. With all extensions disabled in Chrome too.
In image 2: It is worth noting that this file downloads in .RAR despite it being a SINGLE .CPH file, which requries no .RAR/.ZIP storage. Inside these folder formats are .EXE files, which is not what I downloaded.
Image 3: Malwarebytes has found this, and I believe it to be the cause of these corrupt, dodgy virus and malware infected files. I've cleared this off my system before, but I cannot find any running programs, temp data, or local data that could be causing it.
If anyone could give me a hand it'd be much appreciated.
UPDATES AFTER POST:
Okay, well I've followed guides. Ran MB Anti-Rootkit, ran malware checks and virus checks and also the chrome adware removal tool and had no detections.
I removed WinRAR incase that was somehow infected but it isn't.
The new tab with the strange cloud download icon still appears when I download a file, and instead of going to winrar, it's just the .ZIP file with the virus .exe (When you click it, it wants to download files to a location you choose on your PC)
Hmm, it's as if downloads are hijacked but I'm unsure how.
Edited by Budapest, 20 November 2017 - 03:30 PM.
Moved from BSOD ~Budapest