Malicious viruses: Rootkit.Sirefef.Spy and Trojan.FakeAV-Download. A short and misleading pop-up message you may get if your Android phone or tablet is infected with adware. It will display this pop-up when you use your web browser and it doesn’t matter which one, native or Chrome for instance. Rootkit.Sirefef.Spy doesn’t even exist. It’s a made up threat because Sirefef rootkit can only infect Windows machines and it can’t really spy on you.
I got this fake pop-up when I was redirected to a bogus website with even more ridiculous URL info.nq.com.recommend-apps.fantasiticads. Of course, if you don’t know the fact that it’s no an Android malware you might be scared that your device is infected. After all, the fake pop-up claims that your SIM card may be infected and you will soon lose your contacts and other important date. Scary, isn’t it? but down’t worry. It’s just a popup message or an advert if you want. The real problem is the adware app that displays such pop-ups on your device.
The fact is that every time you download something – be it a lifestyle app, an instant messenger application, or a TV series, you could also potentially be downloading a little hidden – and not entirely pleasant – extra. The clue is in the name when it comes to Potentially Unwanted Apps and adware – that’s not the $60 billion dollar question, but what is, is what Potentially Unwanted Apps can do once they are installed on your smartphone or tablet. A PUA’s most common tactic is to display adverts and pop-ups while you browse the net or simply use your device. Some of the pop-ups may be very misleading and claim that you are infected with Rootkit.Sirefef.Spy and Trojan.FakeAV-Download.
If you got this “Malicious viruses: Rootkit.Sirefef.Spy and Trojan.FakeAV-Download” pop-up once and you managed to close it then you are probably fine. But if you keep getting it constantly then there’s probably some app installed on your device which has to be removed. To do so, please go to the Application Manager in Settings, find your web browser and clear both cache and data. See if that gets rid of the pop-up ad. If it does you will also lose your history, bookmarks etc. but that’s the price you’ll have to pay. If the clear operation doesn’t work you may need to do a factory reset, but back up your important data first.