download the new version for android Joker

The screenshot attached below depicts the encoded strings along with the decoding logic, which in this case is an XOR operation. Additionally, it employs several evasion techniques to remain undetected disguising as commonly downloaded applications like games, wallpapers, messengers, translators and photo editors. These are the four pivot points each Joker sample makes use of. In the following flowchart, the full attack chain is shown. The dex file performs malicious activities and communicates with the C&C server.Load the payload dex file using reflection techniques to invoke the DexClassLoader constructor.Download the payload dex file from the above URL.Decode or decrypt the strings to get the first stage URL.The malicious activities can be divided into the following categories: The trojan’s main functionality is to load a dex file and perform malicious activities like inspecting the notifications or sending SMS messages to premium subscriptions. Joker trojans are malicious Android applications that have been known since 2017 for notoriously performing bill fraud and subscribing users to premium services. In this blogpost, we’ll review the general functionalities of Joker trojans and the new techniques used by these variants. These variants were found using the same malware engine powering zIPS on-device detection and Google’s App Alliance, proving that on-device detection capabilities are a must to ensure full protection of an enterprises’ endpoints. Recently, Zimperium found 64 variants of “Joker” trojans unreported by the anti-malware industry. Detail how Zimperium found more than 60 Joker variants, most of them unknown by other security vendors.

Illustrate new evasion techniques used by these samples.Provide insights on Joker trojans that have been known since 2017 and keep evolving to avoid detection.However, malicious applications can find their way to user’s devices through third party stores, sideloaded applications and malicious websites that trick users into downloading and installing apps. As part of Google’s App Defense Alliance, Zimperium helps make the Android ecosystem safer by processing all apps before they reach Google Play.

Download the new version for android Joker