Sure enough there is a fair bit of TCP 445 scanning occuring. The first column of IPs are the sources; these can now be reported to the system owners. What has compromised these hosts? Unclear, but what is clear is that something is wrong - remember, no legitimate packets should ever enter a Darknet.
Slammer was a worm that sent packets to UDP 1434. Argus and a Darknet can spot these easily enough.