Android Malware And The Way You Are Infecting Yourself

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adroid malwares

Android is used by 328 million users worldwide, the operating system has dominated the smartphone market. Android, by 3rd quarter of 2016 covered 88% of the smartphone market.

Being so popular, the developers showed huge interest in building applications for the platform, in a result of which, the android play store (google play store) now hold 2.8 million of Android application, being the biggest application store, in second stands the Apple App Store consisting of 2.2 million applications for IOS users.

The number of Android applications increased much faster in the last 4 years, which is around 1.8 million apps came after the year 2013.

Judy Malware: Auto-Clicking Adware

Android play store consists of 2.8 million apps and are being regularly scanned for malware in them, recently The researchers at Check Point found 41 Android apps infected with Judy Malware which is an auto-clicking adware.

 

“The malicious apps reached an astonishing spread between 4.5 million and 18.5 million downloads.” says Check Point’s Mobile Research Team.

 

The apps were developed by a Korean Company and were available on the play store from a very long time, It is not yet clear that whether the malware already existed or was given as an update, however, it is clear that the malware was residing in play store for a pretty long time.

They also found some more apps infected by the same malware developed by other developers.

These apps also had a lot of downloads between 4 and 18 million, meaning the total spread of the malware may have reached between 8.5 and 36.5 million users. Similar to previous malware which infiltrated Google Play, such as FalseGuide and Skinner, Judy relies on the communication with its Command and Control server (C&C) for its operation.” said the CPMRT in their blog post.

The purpose of the Judy malware is to launch browser applications, load an URL and using javascript detect the ad campaigns and click on them, which in result brings profit to the owner.

Here is the list of applications:

 

Package nameApp nameDateMinMax
air.com.eni.FashionJudy061Fashion Judy: Snow Queen style24.3.17100,000500,000
air.com.eni.AnimalJudy013Animal Judy: Persian cat care14.4.17100,000500,000
air.com.eni.FashionJudy056Fashion Judy: Pretty rapper24.3.1750,000100,000
air.com.eni.FashionJudy057Fashion Judy: Teacher style24.3.1750,000100,000
air.com.eni.AnimalJudy009Animal Judy: Dragon care14.4.17100,000500,000
air.com.eni.ChefJudy058Chef Judy: Halloween Cookies10.4.17100,000500,000
air.com.eni.FashionJudy074Fashion Judy: Wedding Party7.4.1750,000100,000
air.com.eni.AnimalJudy036Animal Judy: Teddy Bear care16.4.175,00010,000
air.com.eni.FashionJudy062Fashion Judy: Bunny Girl Style24.3.1750,000100,000
air.com.eni.FashionJudy009Fashion Judy: Frozen Princess7.4.1750,000100,000
air.com.eni.ChefJudy055Chef Judy: Triangular Kimbap10.4.1750,000100,000
air.com.eni.ChefJudy062Chef Judy: Udong Maker – Cook10.4.1710,00050,000
air.com.eni.FashionJudy067Fashion Judy: Uniform style24.3.1710,00050,000
air.com.eni.AnimalJudy006Animal Judy: Rabbit care14.4.17100,000500,000
air.com.eni.FashionJudy052Fashion Judy: Vampire style24.3.17100,000500,000
air.com.eni.AnimalJudy033Animal Judy: Nine-Tailed Fox18.4.17100,000500,000
air.com.eni.ChefJudy059Chef Judy: Jelly Maker – Cook10.4.1750,000100,000
air.com.eni.ChefJudy056Chef Judy: Chicken Maker10.4.1750,000100,000
air.com.eni.AnimalJudy018Animal Judy: Sea otter care14.4.17100,000500,000
air.com.eni.AnimalJudy035Animal Judy: Elephant care16.4.175,00010,000
air.com.eni.JudyHappyHouseJudy’s Happy House10.4.17100,000500,000
air.com.eni.ChefJudy036Chef Judy: Hotdog Maker – Cook29.3.1750,000100,000
air.com.eni.ChefJudy063Chef Judy: Birthday Food Maker10.4.1750,000100,000
air.com.eni.FashionJudy051Fashion Judy: Wedding day20.4.17100,000500,000
air.com.eni.FashionJudy058Fashion Judy: Waitress style24.3.1710,00050,000
air.com.eni.ChefJudy057Chef Judy: Character Lunch10.4.17100,000500,000
air.com.eni.ChefJudy030Chef Judy: Picnic Lunch Maker10.4.175000001000000
air.com.eni.AnimalJudy005Animal Judy: Rudolph care14.4.17100,000500,000
air.com.eni.JudyHospitalBabyJudy’s Hospital:pediatrics10.4.17100,000500,000
air.com.eni.FashionJudy068Fashion Judy: Country style24.3.1710,00050,000
air.com.eni.AnimalJudy034Animal Judy: Feral Cat care16.4.1710,00050,000
air.com.eni.FashionJudy076Fashion Judy: Twice Style20.4.17100,000500,000
air.com.eni.FashionJudy072Fashion Judy: Myth Style20.4.1750,000100,000
air.com.eni.AnimalJudy022Animal Judy: Fennec Fox care14.4.17100,000500,000
air.com.eni.AnimalJudy002Animal Judy: Dog care14.4.17100,000500,000
air.com.eni.FashionJudy049Fashion Judy: Couple Style24.3.17100,000500,000
air.com.eni.AnimalJudy001Animal Judy: Cat care14.4.17100,000500,000
air.com.eni.FashionJudy053Fashion Judy: Halloween style7.4.17100,000500,000
air.com.eni.FashionJudy075Fashion Judy: EXO Style7.4.1750,000100,000
air.com.eni.ChefJudy038Chef Judy: Dalgona Maker28.3.17100,000500,000
air.com.eni.ChefJudy064Chef Judy: ServiceStation Food10.4.171000050000
air.eni.JudySpaSalonJudy’s Spa Salon10.4.171,000,0005,000,000
Total  4,620,00018,420,000

 

List of apps Developed by other developers.

 
Package nameApp nameDateMinMaxDeveloper
com.CoupleDday커플디데이 (커플기념일, 위젯)2-Apr-17100,000500,000Neoroid
com.DogSoundDog Music (Relax)29-Jun-1610,00050,000Neoroid
com.kakaotalkchatanalyst.ks카카오톡 대화분석기25-Feb-161,000,0005,000,000DeepEnjoy
com.PeriodCalendar황금기 알리미 (여성달력)20-Apr-16100,000500,000Neoroid
com.MoneyBook100억 가계부2-Apr-17100,000500,000그린 스튜디오
com.lee.katocpicKatocPic(카톡픽) – 카톡프로필23-Aug-165,00010,000Wontime
com.appnapps.app77필수추천 무료어플 775-Feb-171,000,0005,000,000App&Apps
com.sundaybugs.spring.freeSpring-It’s stylish, it’s sexy30-Sep-161,000,0005,000,000Sundaybugs
com.lx5475.craftingbox2Crafting Guide for Minecraft4-May-17500,0001,000,000JIZARD
Total  4,215,00018,060,000

 

The Check Point Mobile Research Team has already reported to Google about the application in the result of which Google removed the applications from the play store.

Google’s new service is using machine learning to check the behavior of an application, if any activity is found suspicious then it will remove the application from the phone, by which smartphones are more likely to become safer than now.

ZTorg Trozan: Gives you 5 cents to infect yourself

People have become crazy thinking about how to earn money from the internet, people do several things, some become bloggers, vloggers, photographers and some end up installing applications.

Yes, installing an application, ever seen an ad campaign saying earn from home using your Android device, just install applications and earn money.

A security blogger at Kaspersky named John Snow explains how this mechanism works, He explains in his blog post saying that in google play there are much application which acts as an app exchanger, after downloading such apps you see a list of apps in them, which if you download you will get paid. All you need to do is download and open the listed application for a couple of mins and get paid.

You can find such applications just by having a look at reviews of the apps.

ztorg android malware
source:kaspersky

“Such app exchanges may urge you to download malware, in particular, the infamous Ztorg Trojan.” says John in his blog post.

What is Ztorg?

Ztorg Trojan once installed on your phone, it collects information of your phone and sends it to its command-and-control (C&C) server. The server responds with the files which are used to enable the malware to gain root access to the device. After which the malware developer can do whatever he wants. Ztorg does every activity anonymously so that the victim is not able to notice it.

Ztorg also spreads when you click on ads. When you click on an ad banner and download the app and install it, you will get infected.

What should you do?

You should make sure that you always download the application from trusted developers, not from any third party ones.

Having a good antivirus program in your smartphone is a plus to your security.

 

If you have any doubts or questions feel free to leave us a comment below.

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