"Developers behind an Android banking Trojan have fortified the malware with an exploit to help it gain root privileges; this is the first time a mobile banker that tries to obtain root privileges has been seen in the wild. Researchers detected the Tordow Trojan in February, but attackers have apparently tweaked it over the last several months in order to help it gain root privileges..." https://threatpost.com/android-banking-trojan-first-to-gain-root-privileges/120707/