Here there is a collection of Mirai samples we have collected for different platforms.

b0803b91933fe61b1abc91b001699058  mirai.arm
d2273df4dcff8cca812104cf17a23bca  mirai.arm7
c16ea02487ddcdfbae313f45de23d064  mirai.mips
edeb470ad89d81dfcf72e5c9d7a9eb6c  mirai.ppc
1cb8051b5a220b12a913048a23490f02  mirai.sh4

They can be downloaded in a bundle here
mirai-2016-09-28

And if you wonder what passwords are good to choose to get compromised, here it is a list of frequencies

enable:system	33.78%
shell:sh	33.43%
admin:admin	2.93%
root:xc3511	2.39%
root:vizxv	1.81%
root:admin	1.61%
root:xmhdipc	1.28%
root:123456	1.28%
root:888888	1.27%
support:support	1.26%
root:54321	1.21%
root:juantech	1.18%
root:anko	1.10%
root:12345	1.08%
admin:	1.03%
root:default	1.01%
admin:password	1.00%
root:root	0.96%
root:	0.93%
user:user	0.81%
admin:smcadmin	0.76%
root:pass	0.75%
admin:admin1234	0.70%
root:1111	0.67%
guest:12345	0.59%
root:1234	0.55%
root:password	0.50%
root:666666	0.45%
admin:1111	0.40%
service:service	0.35%
root:system	0.35%
supervisor:supervisor	0.32%
root:klv1234	0.31%
administrator:1234	0.31%
root:ikwb	0.30%
root:Zte521	0.28%
Administrator:meinsm	0.28%
admin:pass	0.27%
admin:4321	0.27%
ubnt:ubnt	0.25%

Update: 1st October 2016! Anna-senpai released the source code of Mirai. As part of the release Anna-Senai confirms that he/she is using 3x 10gbps NForce servers for loading (distributor distributes to 3 servers equally)

The command and control of the botnet has rotated by the IPs

103.1.210.27
103.1.210.28
185.130.225.65
185.130.225.66
185.130.225.83
185.130.225.90
185.130.225.94
185.130.225.95
185.70.105.161
185.70.105.164
185.93.185.11
185.93.185.12
200.170.143.5
46.249.38.145
46.249.38.146
46.249.38.148
46.249.38.149
46.249.38.150
46.249.38.151
46.249.38.152
46.249.38.153
46.249.38.154
46.249.38.155
46.249.38.159
46.249.38.160
46.249.38.161
80.87.205.10
80.87.205.11