The notorious Russian cybercrime group FIN7 is marketing a new tool called AvNeutralizer on dark web forums. This tool, which is designed to evade security solutions, is being used by ransomware groups such as Black Basta. AvNeutralizer is a custom Endpoint Detection and Response (EDR) killer tool that can bypass the security defenses of enterprises. The tool's capabilities have raised alarms among cybersecurity experts, including those at Microsoft and SentinelLabs, who warn that it represents a significant threat to enterprise security.