We spotted a malicious app (detected by Trend Micro as ANDROIDOS_BKOTKLIND.HRX) that appears to be the first developed using Kotlin—an open-source programming language for modern multiplatform applications. The samples we found on Google Play posed as Swift Cleaner, a utility tool that cleans and optimizes Android devices. The malicious app, which has 1,000-5,000 installs as of writing, is capable of remote command execution, information theft, SMS sending, URL forwarding, and click ad fraud. It can also sign up users for premium SMS subscription services without their permission.Read More
Mobile Threats Analyst
In early December, we found a total of 36 apps on Google Play that executed unwanted behavior. These apps posed as useful security tools under the names Security Defender, Security Keeper, Smart Security, Advanced Boost, and more. They also advertised a variety of capabilities: scanning, cleaning junk, saving battery, cooling the CPU, locking apps, as well as message security, WiFi security, and so on. The apps were actually able to perform these simple tasks, but they also secretly harvested user data, tracked user location, and aggressively pushed advertisements.Read More
Trend Micro researchers detected a new SLocker variant that mimics the GUI of the WannaCry crypto-ransomware on the Android platform. Detected as ANDROIDOS_SLOCKER.OPSCB, this new SLocker mobile ransomware variant features new routines that utilize features of the Chinese social network QQ, along with persistent screen-locking capabilities.
SLocker, an Android file-encrypting ransomware first detected and analyzed in July, was found mimicking WannaCry’s GUI. Although Chinese police already arrested the ransomware’s alleged creator, other SLocker operators clearly remained unfazed.Read More