: Use a reputable anti-malware tool (like Malwarebytes or Windows Defender) to scan your entire system.
What is your (Windows 10, Windows 11, etc.)?
cryptdll.dll is a legitimate, native Microsoft Windows module responsible for cryptographic management functions. Because it handles encryption routines, malware authors frequently target this DLL name. They either bundle a malicious, modified version inside a .zip archive (DLL hijacking) or use the name to mask ransomware components that encrypt user files.