Being a good listener is normally considered an admirable quality in a person; however, it isn’t a quality you necessarily want to find in a piece of malware. The latest variant of the Android ransomware threat Android.Lockdroid.E is a great listener. In fact, if you say the right things it might even give you back access to your phone. The threat uses speech recognition APIs and requires its victims to speak an unlock code instead of the traditional method of typing it in.
Once Android.Lockdroid.E infects a device it locks the user out using a SYSTEM type window and then displays a ransom note. The ransom note is written in Chinese and gives instructions on how to unlock the device. The note provides a QQ instant messaging ID to contact in order to receive further instructions on how to pay the ransom and receive an unlock code. Since the user’s device is locked, another device must be used to contact the cybercriminals behind the threat.