Wallpapers Blur HD and Booster & Cleaner Pro apps contained a new strain of ransomware known as LeakerLocker. Rather than encrypting files, the ransomware in question locked the device and threatened to spread sensitive data. The new breed of ransomware was discovered in a wallpaper changer app and a memory-boosting app. The malware attempts to extort a $50 ransom from the victim to prevent the spreading of private information to his or her contacts. Google has removed both apps from the Google Play store.”]
Source: https://securityintelligence.com/news/new-leakerlocker-ransomware-puts-android-users-at-risk/