The SOVA Android banking trojan is continuing to be actively developed with upgraded capabilities to target no less than 200 mobile applications, including banking apps and crypto exchanges and wallets, up from 90 apps when it started out.
That’s according to the latest findings from Italian cybersecurity firm Cleafy, which found newer versions of the malware sporting functionality to intercept two-factor authentication (2FA) codes, steal cookies, and expand its targeting to cover Australia, Brazil, China, India, the Philippines, and the U.K.
SOVA, meaning Owl in Russian, came to light in September 2021 when it was observed striking financial and shopping apps from the U.S. and Spain for harvesting credentials through overlay attacks by taking advantage of Android’s Accessibility services.
In less than a year, the trojan has also acted as a foundation for another Android malware called MaliBot that’s designed to target online banking and cryptocurrency wallet customers in Spain and Italy.
The latest variant of SOVA, dubbed v4 by Cleafy, conceals itself within fake applications that feature logos of legitimate apps like Amazon and Google Chrome to deceive users into installing them. Other notable improvements include capturing screenshots and recording the device screens.
“These features, combined with Accessibility services, enable [threat actors] to perform gestures and, consequently, fraudulent activities from the infected device, as we have already seen in other Android Banking Trojans (e.g. Oscorp or BRATA),” Cleafy researchers Francesco Iubatti and Federico Valentini said.
SOVA v4 is also notable for its effort to gather sensitive information from Binance and Trust Wallet, such as account balances and seed phrases. What’s more, all the 13 Russian and Ukraine-based banking apps that were originally targeted by the malware have since been removed from the version.
To make matters worse, the update enables the malware to leverage its wide-ranging permissions to deflect uninstallation attempts by redirecting the victim to the home screen and displaying the toast message “This app is secured.”
The banking trojan, feature-rich as it is, is also expected to incorporate a ransomware component in the next iteration, which is currently under development and aims to encrypt all files stored in the infected device using AES and rename them with the extension “.enc.” The enhancement is likely to make SOVA a formidable threat in the mobile threat landscape.
“The ransomware feature is quite interesting as it’s still not a common one in the Android banking trojans landscape,” the researchers said. “It strongly leverages on the opportunity that has arisen in recent years, as mobile devices became for most people the central storage for personal and business data.”
