WannaCrypt ransomware has resumed spreading

There seems to be a lot of confusion about versions without killswitches. This guy says he made a mistake: https://twitter.com/craiu/status/863718940870139904

To be more specific, all samples without killswitch were samples of just the ransomware, not the worm spreading it.

Interesting for context:

New domains are just trivial modifications of the old one. Still hardcoded. That's unlikely to be a new version, but rather people playing around.

This guy just found a new kill switch and registered the domain already:

He's talking about versions with nop'ed kill switches.

EDIT: not nop, but with a jnz +2, still similar to a nop-nop.

Was only a matter of time. What's it doing to detect anti-virus sandboxing now, if that was the original purpose of the fixed domain?