DarkSide is a relatively new ransomware strain that made its first appearance in August 2020. DarkSide follows the RaaS (ransomware-as-a-service) model, which means the threat actors not only encrypt the users data, but first exfiltrate the data and threaten to make it public if the ransom demand is not paid. The ransom demand ranges between US$200,000 to $2,000,000. According to their website, the group has published stolen data from more than 40 victims, which is estimated to be just a fraction of the overall number of victims.”]
Source: https://www.cybereason.com/blog/research/cybereason-vs-darkside-ransomware