APK files

A report from DomainTools LLC reveals that cybercriminals are using newly registered domains to distribute the SpyNote Android remote access trojan (RAT) by creating fake websites that resemble legitimate Google Play app installation pages. These counterfeit pages often include familiar visual elements to deceive users into downloading harmful APK files, such as a site mimicking the TikTok installation page. The downloaded files typically contain variants of SpyNote, which can conduct surveillance, harvest sensitive information, and execute remote commands on compromised devices. The delivery mechanism involves a two-stage process where a dropper APK installs a secondary APK with core spyware functionalities, utilizing JavaScript to trigger downloads from fake install buttons. Common characteristics of the domains distributing SpyNote include registration with NameSilo LLC and XinNet Technology Corp., hosting on infrastructure linked to Lightnode Ltd and Vultr Holdings LLC, and the presence of SSL certificates. The malware delivery sites contain code in both English and Chinese, suggesting a Chinese-speaking threat actor may be involved. SpyNote has been associated with advanced persistent threat groups targeting individuals in South Asia, including those in the Indian defense sector. Once installed, SpyNote requests intrusive permissions to access SMS, contacts, call logs, camera, microphone, and location services, and employs persistence mechanisms that make it difficult to remove. DomainTools advises users to be vigilant against spoofed app pages and avoid sideloading APKs from unverified sources.