This Android Ransomware Packs a Punch with Pseudorandom Passcodes

A new Android ransomware is using pseudorandom passcodes in the hope that users will give in and pay the ransom.Once Android.Lockscreen infects a device, it creates a custom System Error window that asks the user to enter in a passcode. Victims can obtain that passcode by talking with the ransomware’s authors.


SYSTEM_ERROR_WINDOW with instructions on how to unlock the device (Source: Symantec)It wasn’t always this way. As Symantec senior threat analysis engineer Dinesh Venkatesan notes in a blog post:

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