Windows 10: Blocked Threat?

Windows 10 secyrity has been notifying me of the following blocked threat once a day for the past few days:


TrojanDownloader:JS/Vdehu.A


It says the following file is affected:


file: C:\Users\billm\AppData\Local\Microsoft\Windows\INetCache\IE\8Q5WLG5V\afr[1].htm


This is happening while websurfing and not from a scan, either Windows Defender nor Malwarebytes. I ran Windows Defender offline without results.


In looking at my C: file structure, I cannot find a file INetCache.


Any suggestions as to what is going on?

:)

 

Windows Defender is blocking too much saying it viruses

Hi Sam,

Based on the screenshot that you've provided, Controlled Folder Access is turned on, blocking most apps that you're using. We suggest that you turn it off to allow blocked apps in Windows Defender. Follow the steps below:

• Select Start > Settings.
• Choose Update & security > Windows Defender.
• Select Open Windows Defender Security Center.
• Select Virus & threat protection, and then choose Virus & threat protection settings.
• Under Controlled folder access, turn it on or off.
• Once done, try accessing the apps and see if you can now access them.

Should you need further assistance, feel free to post back.

 

Windows defender false positive - forced to allow threat

Windows defender has started to identify C:\Windows\System32\mshta.exe as a threat [normally reported as a Trojan Powessere.G]. I use mshta.exe to run an hta custom MsgBox - I have been hoping to keep using my current CustomMsgBox tool [batch file calling a vbs-hta file] until later this year when I hope to have had enough time to replace it with a PowerShell alternative.

Windows defender's notification lets me "allow the threat" but that seems to me to be a bigger security hole than is necessary - it will now ignore a potentially real intrusion when all I want to run is a genuine Windows component. My immediate problem is fixed but I would prefer to fix the false positive using the exclusions list.

I cleared the 'Allowed threats history' so I could use the exclusions list instead. I added C:\Windows\System32\mshta.exe to the file exclusions list and I checked that it had taken properly by checking the exclusions list both in the UI & in the Registry. But the exclusion made no difference, it continued to detect and block the exe.

I have repeated the attempt several times [by clearing the allowed threats list & exclusions list beforehand] and the results are the same every time
- allowing the threat works,
- using the exclusions list has no effect.

I studied the relevant tutorial but have not spotted an error in what I have been doing - Add or Remove Windows Defender Exclusions

Does anybody with experience of using the exclusions list to counter false positives have any suggestions for me?

Denis

 

blocking apps

Hi,

Thank you for posting your query on Microsoft Community.

I suggest you to follow the below steps and check if it helps:

• Log in to https://familysafety.microsoft.com/ using your Microsoft Email account.
• Find the user that is correspond to the computer account on the Windows that you are having issue with.
• Click on "App Restrictions".
• Under App Restrictions, click on "App list".
• Here, you can Allow or Block the Apps/Games that you want.

Please let us know if you need further assistance.

Thank you.