Avast Premium pops-up JS:Miner-AV[Trj] continuously

[arrohith]

Hello,

I have been running Avast Free for more than a year now and recently switched to Avast Premium. This issue has been found in both the versions on two computers present on the same home Wi-Fi network.

I have been seeing the "Threat Secured" pop-up almost on a continuous basis when browsing or even when the computers are idle. In fact, many times these alert pop-ups show as soon as windows loads up. The window says that a connection was aborted to sites like ctldl.windowsupdate.com because it was infected with JS:Miner-AV[Trj]. I can’t connect to http://www.mcshield.net/ too! and the browser shows that the connection was reset.

Additionally, I have scanned the computers using Malwarebytes' latest version, Zemana, HitmanPro and finally FRST (I have attached the reports), but all these tools haven't been able to detect any Trojan or malware on the machines.

I would love to know how this issue can be resolved.

Regards,
Rohith

[Asyn]

You can report a suspected FP (File/Website) here: https://www.avast.com/false-positive-file-form.php

[arrohith]

Thank you for the prompt reply. I have tried reporting the issue using the form at the link provided by you. However, I wanted to upload a file with screenshots too, tried both .docx as well as .pdf, but to no avail. The page responds by saying that there was an internal error and I should try later.

[Asyn]

You're welcome. Allowed file types for screenshots are:  jpg, png, gif

[rocksteady]

Use a Paint program to paste in your screenshot and save as image file instead of using Word.
https://support.avast.com/en-us/article/Create-screenshot
If you have it already pasted in a word doc then right click the image and choose "Save as picture".

edit: fix typo

[arrohith]

Thanks for the support. I have posted a False Positive report with a screenshot; albeit only one screenshot of a dialog which pops-up in 100 variants! I hope there is infection on my computers and this is a "real" false positive.

[Asyn]

You're welcome.