A new malicious campaign is using a legitimate but old and vulnerable Avast Anti-Rootkit driver to evade detection and take control of the target system by disabling security components. [...]
source https://www.bleepingcomputer.com/news/security/hackers-abuse-avast-anti-rootkit-driver-to-disable-defenses/
source https://www.bleepingcomputer.com/news/security/hackers-abuse-avast-anti-rootkit-driver-to-disable-defenses/