Unwanted Apps (Maybe malware) downloaded and installed on Android device

Question

Off late, I have been observing some unwanted apps getting downloaded and installed on my Android device without my knowledge. Upon noticing I uninstalled those apps. However, the next time I switch on my data or connect to Wi-Fi, in no time does it re-install those apps. Is there a way in which I can troubelshoot this ?

Below are the couple of apps that are getting installed (please not none of these are available on Play Store):

• Content Visual
• VedioZone
• UC News
• WhatsApp (This is not the original WhatsApp with a slightly different icon)

I tried doing a Factory Reset with no success

I also tried resetting the device by going into the recovery mode with no success.

I disabled allowing apps to installed from unknown sources.

The Quick Heal anti-virus does not detect any threats.

Edit 1: I could see multiple instances of the above listed app as shown in below image:

Answer 1

I think some malicious process running on your device so go to

Settings->App->Running (Tab)

and try to identify unwanted process and if you get it stop the process and try to uninstall belonging application of respective process.

Answer 2

This is some kind of virus that has worked its way into the operating system. The only solution is to flash the default operating system again.

Since you did not specify the phone model, I'll be generic about my answer.

Reflashing the stock operating system is a process where you download the default operating system from the phone manufacturer website and load it into the phone, overwriting the existing operating system which is infected. A factory reset will not work in this case. Doing this involves unlocking the bootloader, which will void the warranty. Contact your phone's manufacturer and ask if there is a way to repair the phone without voiding the warranty. If there isn't, google your device name and "flash a custom ROM", or a custom operating system that many Android professionals prefer over the stock one. In your case, instead of writing the alternate operating system, we are simply rewriting the default one from the manufacturer.