[1][2] Brain Test was discovered by security firm Check Point and was available in the Google Play app store until 15 September 2015.
[1] Brain Test was uploaded on two occasions (com.zmhitlte.brain and com.mile.brain), starting in August 2015, both times Google's "Bouncer" failed to detect the malware.
Tim Erin of Tripwire said the "Bypassing the vetting processes of Apple and Google is the keystone in a mobile malware campaign."
[3] The malware is thought to have been written by Chinese actor, according to Shaulov of Check Point, based on the use of a packing/obfuscation tool from Baidu.
According to Check Point, it may be necessary to re-flash the ROM on a device if Brain Test has successfully installed a reinstaller in the system directory.