A new version of cryptolocker has emerged that affects Android systems.

Dubbed Android/Simplocker by ESET, the malware scans the SD card in a handset for certain types of file, encrypts them, and demands a ransom to decrypt the data.

Unlike Cryptolocker, this malware only demands about $21 dollars to unlock your system.

It's not immediately clear how the malware spreads. Eset found the sample in an application called "Sex xionix" - which suggests the malware is a Trojan that poses as a legit smut-viewing app.

A full write-up of the threat can be found in a blog post by ESET here.