Windows 10: Windows defender deletes "trojans" even though it's off.

I went into regedit and disabled windows defender but it still deletes files that I download that it deems to be malicious. I've also tried adding exclusions but that doesn't seem to do anything and my exclusions list is still empty despite me repeating the process. I'm on the beta channel of the windows insider program fyi.

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:)

 

Brocoiner!rfn trojan and windows defender

Good Evening,

I started getting messages yesterday that Windows Defender had found malware and was removing it. Windows Defender is green, check marked and has the latest update. I have run quick and full scans and Defender says it is happy. However, in the history section
I found Brocoiner!rfn listed many times as quarantined and deleted it. Every few minutes I get a new message and the trojan is back in the quarantine section. How do I permanently get rid of this malware and hopefully the ongoing notifications? Thank you.

 

Trojans

Windows Defender is not getting rid of the Trojans. Does anyone have suggestions?

Thank you

 

Trojan Found and Deleted....but it Returns (Trojan: HTML/Phish.AB!MSR)

Windows defender periodically finds a Trojan in a .htm file in my Windows Communications appdata area (see attachment). You will notice that the file is in the Attachments folder. Windows defender seems to delete this threat but after a few days or a couple
weeks, the threat will return in the exact same location.

I have no evidence that the Trojan is actually running on my computer. I believe it is just sitting in the file waiting to be executed. I have not knowingly run this file and am usually careful about phishing attacks.

Only Microsoft Defender will find it. I tried using Malwarebytes, Bitdefender and Microsoft Safety Scanner. None of these even finds it.

MS-Defender says that it is successful at removing it and a scan immediately after the clean will not find the Trojan.

A few troubleshooting actions to date:

• Have removed the threat and immediately opened all known Microsoft communications programs (Outlook, Windows Calendar/Mail, Skype, Skype-Biz, Teams). I then reran a scan but did not find the Trojan. Nevertheless, it did return a couple weeks later.
• I have started my computer in Safe Mode and deleted the entire package folder. After rebooting, the Trojan is no longer found by Defender. However, the folder and its content is eventually recreated along with the Trojan threat.
• I had a case opened at Microsoft (who more-or-less had me repeat everything I had already done). MS ultimately recommended that I rebuild/refresh my entire computer. I am not adverse to doing this but I am worried that since the Trojan appears to be in
  an attachment within Windows communications, it will simply return. I do not want to waste my time.

I currently run a daily scan of the appdata\package folder so that I can identify when the file returns.

MS-Surface Pro i7/16GB/512GB with all Windows 10 Pro updates completed.

Office 365 environment with most all files stored in OneDrive or SharePoint.

Thank you for any further thoughts on this issue.

-bs