Suspicious folder in the phone
''I have a folder in my Samsung note5 with name :
Z3FiWGhmQmwya2VVTWdBUWpwdTAxNjhmMDc1
Inside the folder the following 3 files are there; What are these.. even if I delete them, they appear back !!
1. QUNpNlZMVVVnQUNpcDcwMWVkMg
2. QURqS2xLVVlsQUhpcHYwMWMxODM
3. This directory is very important. Please do not delete
Please advise: