CETRAINER is a file extensions associated with files created by DVBM software tool, also known as Cheat Engine. DVBM is a virtual machine that allows running virtualized operating systems and access various applications (including games) in kernelmode in order to modify them.

CETRAINER files store information about modification that can be applied to Windows-base games. CETRAINER files store data in XML format and can be encrypted with XOR algorithm and compressed using Zlib method.