This looks like someone releasing code too early. No mention of countermeasures, I’ll publish once I have details…:
[…] “Though we haven’t observed Silver Sparrow delivering additional malicious payloads yet, its global reach, relatively high infection rate, and operational maturity suggest Silver Sparrow is a reasonably serious threat, uniquely positioned to deliver a potentially impactful payload at a moment’s notice,” the researchers said.
Lisa Forte, from Red Goat Cyber Security, told BBC News the attack should be a wake-up call to Mac users who assumed they were not at the same risk as Windows users of being infected by malware.
“The malware doesn’t appear to have done anything nasty,” she said.
“But the fact it spread so fast and infected so many devices is alarming in itself.
“No device is immune from viruses.”
Computer security expert Alan Woodward said the attack appeared to be an effort to disprove this long-standing myth.
“It is as if someone was trying a proof of concept of how to move harmful code on to Macs and to control it once there,” he said.
“But they didn’t include the truly damaging elements.”