my new favorite modules (for today) are the snmp_enumusers and snmp_enumshares modules that work against windows hosts that have snmp running.
msf > use auxiliary/scanner/snmp/
use auxiliary/scanner/snmp/aix_version
use auxiliary/scanner/snmp/snmp_enumshares
use auxiliary/scanner/snmp/cisco_config_tftp
use auxiliary/scanner/snmp/snmp_enumusers
use auxiliary/scanner/snmp/cisco_upload_file
use auxiliary/scanner/snmp/snmp_login
use auxiliary/scanner/snmp/snmp_enum
use auxiliary/scanner/snmp/snmp_set