Cybersecurity researchers from ESET found a handful of malicious Android apps that were spying on people and stealing sensitive information from their mobile devices.
The researchers said that a new threat actor group, which they dubbed Virtual Invaders, was active from late 2021, creating a number of Android apps posing as communications products, which also came with the open-source XploitSPY malware.
The hackers called their campaign “eXotic Visit.”
Low download count
On the surface, the apps worked as intended, offering rudimentary communications services. However, behind the curtain lay malware that extracted people’s contact lists and files, the device’s GPS locations, file names listed in specific directories related to the camera, downloads, and different messaging apps such as Telegram, or WhatsApp.
If some file names showed promise, the attackers could extract them as well, it was said.
To build the malware, the attackers seem to have taken the open-source Android Remote Access Trojan (RAT), XploitSPY, and modified it. While the apps offered rudimentary services, they came with a number of fake functionalities, too. Throughout the years, the attackers added new features, including better obfuscation techniques, emulator detectors, and more.
There were more than a dozen apps, ESET said, with the three biggest ones being called Dink Messenger, Sim Info, and Defcom. All were being distributed via standalone websites, as well as Google Play, but all were subsequently removed from Google’s app repository.
Still, the chances of being infected by any of these are relatively low. Apparently, the attackers only targeted individuals in Pakistan and India, and were quite specific in their attacks. In total, there were roughly 380 downloads from the websites and the Play store. Each app has had up to 45 downloads. The distribution methods were not discussed, but they were most likely phishing and social engineering.
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