How can I find out if the threat is false positive?

Avast Mobile Security detects malwares in the four bottom listed items. Each of the items offers two choices: 1. solve the problem through deactivation or 2. ignore the problem. I cannot deactivate them in the settings. I don´t want ignore the problems. I tried to scan smartphone through AVG Antivirus, which didn´t find any problem. I cannot locate these files in folders of my smartphone. How should I find out if the threat is really dangerous or is only false positive? Thank you for your help.

Intent Filter Verification Service 1.0 com.android.statementservice installation date 2017/12/23 10:21:00 update date 2018/03/15 21:36:20, there is no possibility for deactivation or termination of the application
One Time Init 7.1.2 com.android.onetimeinitializer installation date 2017/12/23 10:21:00 update date 2018/03/15 21:36:20, there is no possibility for deactivation or termination of the application
ProxyHandler 7.1.2 com.android.proxyhandler installation date 2017/12/23 10:21:00 update date 2018/03/15 21:36:20, there is no possibility for deactivation or termination of the application
WMService 1.0.2 com.miui.wmsvc installation date 2017/12/23 10:21:00 update date 2018/03/15 21:36:20, there is no possibility for deactivation, but I can terminate the application

Smartphone: Xiaomi Redmi 4x (Android 7.1.2, MIUI 9.5.2.0 (NAMCNFA))

Hi,

Please report it here:
https://www.avast.com/false-positive-file-form.php

Thank you for your message. I cannot locate affected files in folders - my phone is not rooted and some folders can be hidden, I only found one file of them (WMService.apk), I tried to copy it to another folder and the Avast warned, that it contains Evo-Gen Virus. I will try to send it to Avast through the form. Thank you for your help.

I hope that the file was sent (I did it twice and got not confirmation that the “infected” file passed through).