The industry has seen a sharp rise in a much more complex form of attack fileless malware. Fileless malware often injects its code into the memory of existing programs, making it very difficult for antivirus solutions to detect. At WatchGuard, we have registered more than 200,000 different malwares originating from scripts since 2020 (compared to less than 50,000 from browsers) This is an increase of 888% compared to 2019. The most prominent fileless cyberattacks are living-off-the-land attacks, such as the famous Astaroth case.”]
Source: https://www.cuinfosecurity.com/blogs/what-fileless-cyberattack-p-3169