graylog-stealthwatch
Here you can find graylog extractor and sample dashboard what you can use in your Stealthwatch configuration.
EXTRACTOR_STW.json is used to parse incoming syslog message. Graylog-stealthwatch_dashboard.json is simple dashboard example. You need to edit query DOMAIN:PUT-YOUR-OWN-DOMAIN-HERE to DOMAIN:acme.local if acme.local is your domain.