Guarding Against Fileless Malware: Types and Prevention

Fileless malware uses legitimate programs in a system to avoid detection by traditional defense systems such as antivirus software. These stealthy attacks operate directly in a system’s RAM, with no identifiable code or signature. Major types include memory resident malware, Windows registry resident malware, rootkits, exploit kits, fileless ransomware, and false credentials. Organizations should update systems regularly, monitor native tools for unusual activity, and look for signs of unusual activity instead of malicious files for protection.