Android devices with code from Ragentek contain a privileged binary that performs over-the-air (OTA) update checks. Additionally there are multiple techniques used to hide the execution of this binary. This behavior could be described as a rootkit. This binary which resides as /system/bin/debugs runs with root privileges and does not communicate over an encrypted channel. The binary has been shown to communicate with three hosts via HTTP: oyag.lhzbdvm.com oyag.prugskh.net oyag.prugskh.com Server responses to requests sent by the debugs binary include functionalities to execute arbitrary commands as root install applications or update configurations. Examples of a request sent by the client binary: POST /pagt/agent?data={\name\:\c_regist\ \details\:{...}} HTTP/1. 1 Host: 114.80.68.223 Connection: Close An example response from the server could be: HTTP/1.1 200 OK {\code\: \01\ \name\: \push_commands\ \details\: {\server_id\: \1\ \title\: \Test Command\ \comments\: \Test\ \commands\: \touch /tmp/test\}} This binary is reported to be present in the following devices: BLU Studio G BLU Studio G Plus BLU Studio 6.0 HD BLU Studio X BLU Studio X Plus BLU Studio C HD Infinix Hot X507 Infinix Hot 2 X510 Infinix Zero X506 Infinix Zero 2 X509 DOOGEE Voyager 2 DG310 LEAGOO Lead 5 LEAGOO Lead 6 LEAGOO Lead 3i LEAGOO Lead 2S LEAGOO Alfa 6 IKU Colorful K45i Beeline Pro 2 XOLO Cube 5.0