Shortly after Miraiwas attributed to massive DDOS on OVH and Brian Krebsthe source code for Mirai was released on Github. This was a double edged sword. It gave security researchers insight into the code, but it also made it more available to those who may want to use it for nefarious purposes. Within days Mirai variants were detected. Now chinese researchers Network Security Research Labsare reporting that recent samples of Miraihave a domain generation algorithm (DGA) feature. The DGA is somewhat limited in that it will only generate one domain per day, so a total of 365 total domains are possible and they are all in the .techor .support TLDs. " />
Definitely something to have your Intrusion Detection and DNS sensors watch for.
Thedetailed analysis of the malware sample is a fun read...if you are into such things.
-- Rick Wanner MSISE - rwanner at isc dot sans dot edu - http://namedeplume.blogspot.com/ - Twitter:namedeplume (Protected)
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