A New Google Play Store Android Malware called “ExpensiveWall” Discovered that can able to Control the Android Mobile wallet by sending fraudulent premium SMS messages which leads to charge for fake services.
“ExpensiveWall” Infected almost 50 + Android Application and Downloads of this Apps Estimated Around 1 million and 4.2 million.
This New Variant Family has Discovered on earlier time of 2017 and the entire malware family has now been downloaded between 5.9 million and 21.1 million times.
This Expensive Malware Is Completely Packed . Malware authors are Encrypt the Source code and also used Advanced obfuscated Technique to Evade the Google Play Security.
Also Read : Beware!! All Android Versions Up to 7.0 are Vulnerable to Toast Overlay Attack
ExpensiveWall is Specially designed for Generating Profits from its Targeting Victims and also using Google Play Store, that is the fastest way to Targeting huge number of Victims.
Initially, Once Expensive Malware is Downloaded, it asks Permission from users to access Internet, Message, and other Sensitive Permissions.
Most of the User will give Permissions without thinking the security. In This Case, Many of the Applications seeking Permission for Legitimate Purpose but Few of them are performing Malicious Activities.
App Permissions Leads to connect its C&C server – and SMS permissions – which enable it to send premium SMS messages and register users for other paid services all without the users knowledge.
Here, There is an Interface called WebView which helps to running the JavaScript code inside of the WebView that allow to trigger in-app activities by connecting App Activities and JavaScript Code.
According to Checkpoint Report, Once C&C Sever Connection has successfully Established then, the infected device to its C&C server, including its location and unique identifiers, such as MAC and IP addresses, IMSI, and IMEI.
This Malware Connect to C&C server whenever Infected Device Switched on and received an URL in the WebView interface that contains Malicious java script code.
Malicious code secretly click the link and subscribing them to premium services and sending SMS messages and generating revenue by silently clicking ads.
Checkpoint Report this Malware activities to Google and Google promptly removed the reported samples from its store.
But already Millions of users were Download this Malware which remains to do the Malicious activities unless the App get uninstalled.
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