Hi, i have this in log
https://prnt.sc/somztx
I changed password but have the same,
when i delete this file from mikrotik in downloaded automatically again.

They are not proud of this but it does exists at least:

https://blog.mikrotik.com/security/

This is the last one who's router was hacked:
viewtopic.php?f=2&t=161521

thanks