Where i can get DGA (Domain Generation Algorithm) based malware files for analysis? And,Can I get malware family names which is using Domain Generation Algorithm?
I know of no collection of malware samples, focusing specifically on DGAs. However, there are some resources that generally concentrate on DGAs and may provide you enough pointers to identify a reasonable number of different samples yourself.
There is Johannes Bader's github repository which features several reimplementations of DGAs found in malware, along with detailed write-ups and reference hashes.
If you are looking for some more background (more than in my BotConf talk) check out our USENIX paper, we listed many of the primary characteristics for a selection DGAs.
I also run DGArchive - the referenced database of algorithmically generated domains (69 DGAs, 617 seeds, 63,699,402 unique domains). Other similar databases are John Bambenek's OSINT feed and 360.cn Netlab's DGA project.
I will likely provide tags on samples (such as "c2_dga" or similar) on the corpus of my current pet project malpedia.