Faults after some time

For unknown reason, it stops to work and IIS application pool restarts.

From event log:
Faulting application name: w3wp.exe, version: 10.0.17763.1, time stamp: 0xa7ccada2
Faulting module name: maodbc.dll, version: 3.1.6.0, time stamp: 0x5e26d430
Exception code: 0xc0000409
Fault offset: 0x000a119f
Faulting process id: 0xefa0
Faulting application start time: 0x01d5fd16e3b51a2b
Faulting application path: C:\Windows\SysWOW64\inetsrv\w3wp.exe
Faulting module path: C:\Program Files (x86)\MariaDB\MariaDB ODBC Driver\maodbc.dll
Report Id: 49e10147-5e93-4ad5-82d3-62e87d1077cf
Faulting package full name:
Faulting package-relative application ID:

And after this:
Aborted connection xxxx to db: 'xxxxx' user: 'xxxxuser' host: 'server' (Got an error reading communication packets)

Any ideas,

Thanks
Costis