New Android Trojan Stole Millions From Android Users

The ‘Joker’ Virus: All the things You Want To Know – Up to date November 2021

The ‘Joker’ virus has been round since 2017, it has been a recurring thread to Android OS to at the present time. You’ve most likely heard of this virus on multiple event. Contemplating that it surfaced two instances within the final couple of months, we’ve determined to offer you extra detailed details about it.

We’ll begin from the start, and clarify to you what precisely is the ‘Joker’ virus / trojan. That may, hopefully, provide help to keep away from it transferring ahead. We’ll additionally replace this text as new occurrences occur, as they’re turning into extra frequent.

What’s the ‘Joker’ virus?

The ‘Joker’ virus or malware, because it’s typically referred to, is malicious code that hides in Android functions. These functions are normally positioned within the Google Play Retailer, and the malware stays undetected at first. That’s sufficient for it to do some main harm. This malware is assessed as ‘spyware Trojan’, and it belongs to a household of malware often called “Bread”. Their complete purpose is to authorize operations with out the consumer’s information or consent, and create monetary harm by doing so.


What does it do, precisely?

There are all kinds of misdeeds that this virus / malware can do. It may possibly steal your SMS messages, contact checklist, and system data. Primarily based on that, it may possibly work together with commercial web sites, and subscribe you to premium providers with out you realizing about it. That means, it creates monetary harm to you, straight. It first relied on SMS frauds, however that wasn’t sufficient, because it developed, and it now does on-line funds within the background.

When did the ‘Joker’ virus first seem?

The ‘Joker’ malware first popped up again in 2017. Again then, it relied on SMS frauds, but it surely shortly developed to do some vital harm within the background, by subscribing customers to varied providers, and affecting their financial institution accounts.

What different occurrences are value noting?

This malware appeared in September 2020 as nicely, when it was present in 24 Android functions. Collectively, these apps registered over 500,000 downloads, earlier than Google eliminated them. The malware, at this level, affected folks in additional than 30 nations all over the world, together with the US, Brazil, and Spain, amongst others.


In June 2021, it was present in 8 new apps. By the point the report went out, all of these apps had been faraway from the Google Play Retailer. This report additionally clarified that the app normally spreads by scanner, wallpaper, and message functions that find yourself within the Play Retailer.

Quickly after the earlier incident, the ‘Joker’ malware appeared in August 2021. This time round, it was present in 16 functions that had been accessible within the Play Retailer. As soon as once more, these had been principally PDF scanner apps, SMS apps, and messaging apps generally. This time round it wasn’t clarified how many individuals downloaded these apps earlier than they had been eliminated.

In October 2021, a Squid Recreation-related app with Joker malware was noticed within the Google Play Retailer. The app’s identify is “Squid Wallpaper 4K HD”, and it was eliminated after round 5,000 folks downloaded it.


In November 2021, the malware resurfaced. It was noticed in 7 functions within the Play Retailer. One in every of them had over 50,000 downloads.

What number of apps had been contaminated because the inception of this virus?

Again in January 2020, Google reported that it eliminated over 1,700 apps that contained this malware. So, the corporate did many of the heavy lifting within the course of, because it eliminated most of these apps earlier than cybersecurity corporations even seen. We had been unable to discover a more moderen quantity, however contemplating that the malware is being talked about extra incessantly by cybersecurity corporations, we worry that many extra apps bought contaminated.

What can I do to guard myself?

Keep away from downloading new apps that appear fishy. As already talked about, this malware normally hides in apps that faux to be SMS apps, functions for messaging, scanning PDF information, and related. It’s, in fact, attainable to seek out it in picture enhancing apps, and so forth. Earlier than you obtain an app, be sure that to test the critiques, and if attainable, don’t obtain apps the second they’re despatched to the Google Play Retailer. This will have an effect on the builders, sadly, however at the least you’ll have a while to verify it’s not a rip-off. Or, alternatively, test the place the app is coming from. If it’s a developer that you simply belief, then be happy to obtain it. Additionally, be sure that to consider the permissions a selected app asks for you. If they appear unrealistic for that sort of app, you could assume twice prior to installing it.


What are the signs of an infection with the ‘Joker’ malware?

More often than not, you received’t discover something, at the least primarily based on what we’ve seen to date. Effectively, you’ll discover the harm when you discover a change in your funds, however contemplating that this virus operates within the background, it may possibly do plenty of harm with out your information. It would request some permissions upon app set up, although that’s what each app does. On some events, you could discover that your system slowed down a bit, which could possibly be the case with telephones which might be inferior with regard to {hardware}. You may additionally discover new apps popping up in your telephone, although that may not often occur within the app launcher. If that occurs, will probably be hidden in your app checklist. This isn’t as possible although, on account of varied limitations put into place. Apart from, that’s not how the ‘Joker’ normally features.

Can apps outdoors of the Play Retailer be contaminated?

In fact. Although such apps normally goal on the Play Retailer as much more folks obtain apps that means. Relating to putting in apps outdoors of the Play Retailer, you ought to be extraordinarily cautious. Such apps haven’t been correctly checked by Google, and might comprise varied malware. So, be sure that to put in solely apps you belief in case you manually set up them, from a third-party supply.

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