Here at the ISC we provide access to a number of bits of data which can be used to dig into problems or even as an early warning system of unusual activity. Well today’s data has revealed a confounding one. Port 62234, which traditionally has zero on near zero sources attempting to access it suddenly has hundreds of sources.
This port is not one I have seen as a target before, and none of my sources show any traffic on this port. A check of Shodan shows only 3 hits, and two of those appear to be BitTorrent related. I am at a loss. If any of you has further information, firewall logs, or better yet, packet captures of this activity it would be appreciated if you could send it over for analysis.
— Rick Wanner MSISE – rwanner at isc dot sans dot edu – http://namedeplume.blogspot.com/ – Twitter:namedeplume (Protected)
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