Google's App Store - Full Of Spyware

A significant number of Android Apps have been discovered to contain a potentially dangerous software development kit that is being used as spyware. The antivirus company Dr. Web has discovered spyware in over 100 Android applications with over 421 million downloads in Google Play.

They found malicious Software Development Kit (SDK) is hiding in more than a hundred Android Apps, many of which were previously available on the Google Play store. The SpinOK module offers mini games, and apparent prizes to gain users’ interest in downloading.

This module scrapes data from files on your device and sends that information back to bad actors, which is the antithesis of the privacy policy you want from the apps on your smartphone. Dr. Web has named it SpinOk which,  when downloaded to a device, can collect information about files, can send files to the attackers, and can steal clipboard content.

SpinOK also bypasses your device’s proxy settings, which enables it to hide its network connections. It can then serve you ads thanks to the connection to its remote server, which kicks off the scraping of your device’s data, including listing the files on your device, the location of a specific file or directory, stealing a specific file, and even copying or replacing the contents of your clipboard.

SDK connects to the command-and-control server and sends a trove of device information, including data from sensors, which allows it to detect emulator environments. The server response contains numerous URLs used to display advertising banners via WebView.

Additionally, the module can collect a list of files in specified directories, check for the presence of specific files and directories, upload files from the device, and copy or substitute clipboard content. “This allows the trojan module’s operators to obtain confidential information and files from a user’s device, for example, files that can be accessed by Apps with Android.Spy.SpinOk built into them... For this, the attackers would need to add the corresponding code into the HTML page of the advertisement banner,” Dr. Web explains.

Google has been notified and has removed some of the apps. In some cases, only certain versions contained the malicious SDK.

So far, the malicious module and various modifications have been identified in a total of 101 applications in Google Play and some of the most popular applications containing the malicious module include Noizz (over 100 million installations), Zapya (over 100 million installations the code was present in versions 6.3.3 to 6.4), VFly (over 50 million downloads), MVBit (more than 50 million installations), and Biugo (over 50 million downloads). Doctor Web has published a list of infected applications.

Protect Your Smartphone From SpinOK

It looks Google has responded to threat and has removed a majority of these Apps from the Play Store, with the notable exception of Zapya, which since the introduction of version 6.4.1 no longer contains the malicious SpinOK module.

However, while users can no longer download the module, that does not help users who have already installed it on their device. That’s why it’s important to look through the official list and see if you have any of those Apps on your device. If so, delete it immediately.

If you have Zapya on your device, update it now. Google removing an app from the Play Store won’t affect any Apps you have on your phone and users are advised to un-install it themselves.

Dr. Web:   GitHub:    Techradar:     LifeHacker:     Security Week:   GHacks:    SCMagazine

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