Little Snitch on my laptop just caught an unusual connection attempt - /usr/sbin/rpcbind tries to connect to 18.104.22.168 (scan-06d.shadowserver.org). This looks suspicious to me as it has never happened before. How can I check why this happened? Are there any logs or command line utilities that can point me to the origin of this request?
macOS Sierra 10.12.1 (16B2555)