Patrick Wardle, a security expert, discovered the malware. “To me, the most notable thing is that it was found on almost 30,000 macOS endpoints… and these are only endpoints the MalwareBytes can see, so the number is likely way higher. That’s pretty widespread… and yet again shows the macOS malware is becoming ever more pervasive and commonplace, despite Apple’s best efforts.”
You can check your Mac for the Silver Sparrow infection. Specific directions are in the Red Canary report.