security patches

A new Android malware called NoVoice has been found in over 50 applications on Google Play, with more than 2.3 million downloads. The malware targets older Android versions, specifically those patched between 2016 and 2021, and attempts to gain root access by exploiting vulnerabilities. It conceals malicious components within the com.facebook.utils package and uses steganography to hide an encrypted payload within a PNG image file. NoVoice avoids infecting devices in certain regions and has checks to detect emulators and VPNs. Once activated, the malware contacts its command-and-control server to gather device information and polls it every 60 seconds for tailored exploits aimed at rooting the device. It can exploit 22 vulnerabilities, including kernel bugs, and establishes persistence by replacing key system libraries and installing recovery scripts. The malware injects code into applications, particularly targeting WhatsApp to extract sensitive data for session replication, which is then exfiltrated to the C2 server. The malicious apps containing NoVoice have been removed from Google Play, but users who installed them should consider their devices compromised. Upgrading to devices with later security patches is recommended to mitigate the threat.