Malware spam: "I have attached a revised spreadsheet.."

This spam has a malicious attachment:

From:    Britney Hart
Date:    16 May 2016 at 13:15
Subject:    Re:

hi [redacted]

I have attached a revised spreadsheet contains customers. Please check if it's correct

Regards,
Britney Hart

Other variations of the body text seen so far:

I have attached a revised spreadsheet contains general journal entries. Please check if it's correct
I have attached a revised spreadsheet contains estimates. Please check if it's correct

Attached is a ZIP file with three identical malicious .js files. The ones I have seen so far download from

fundaciontehuelche.com.ar/897kjht4g34
thetestserver.net/fg45g4g
technobuz.com/876jh5g4g4

There are probably other download locations. Each one downloads a slightly different binary (VirusTotal prognosis [1] [2] [3]) and automated analysis [5] [6] [7] [8] [9] shows the malware phoning home to:

188.127.231.124 (SmartApe, Russia)
31.184.197.72 (Petersburg Internet Network, Russia)
92.222.71.26 (RunAbove / OVH, France)
149.202.109.202 (Evgenij Rusachenko aka lite-host.in, Russia / OVH, France)

The payload is Locky ransomware.

Recommended blocklist:
188.127.231.124
31.184.197.72
92.222.71.26
149.202.109.202