Silver Sparrow is the first malware to include native code for Apples new M1 chips. The malware was installed via Apple installer packages named update.pkg or updater.pkg. Malwarebytes researchers collaborated with Red Canary researchers on their find, and have collected significant data about the infection at this point. At the time of this writing, weve seen 39,080 unique machines with components of Silver Sparrow detected. These detections are primarily clustered in the US, with more than 25,000 having Silver Sparrow detections.”]
Source: https://blog.malwarebytes.com/mac/2021/02/the-mystery-of-the-silver-sparrow-mac-malware/