I also had this crash today. MBARW had been running fine for the past month.
It shows version 0.9.17.661 (Beta)
Description
Faulting Application Path: C:\Program Files\Malwarebytes\Anti-Ransomware\MB3Service.exe
Problem signature
Problem Event Name: APPCRASH
Application Name: MB3Service.exe
Application Version: 3.0.0.571
Application Timestamp: 57bcde7b
Fault Module Name: ntdll.dll
Fault Module Version: 10.0.14393.206
Fault Module Timestamp: 57dac931
Exception Code: c0000005
Exception Offset: 00000000000351d3
OS Version: 10.0.14393.2.0.0.768.101
Locale ID: 4105
Additional Information 1: 5dd3
Additional Information 2: 5dd3417b7258741beffcddc272869a60
Additional Information 3: 7ef2
Additional Information 4: 7ef24a6048b5cd53097ac723e1eeccc6