"Milkshake.rar" and similar files use specific techniques to avoid detection by traditional antivirus software:
Software that records every keystroke, allowing attackers to capture login credentials as they are typed. Milkshake.rar
Before opening any archive, upload it to VirusTotal, which checks the file against over 70 different antivirus engines. "Milkshake
The actual malware may be buried several folders deep within the archive to confuse automated sandbox analysis. upload it to VirusTotal
If you encounter a file named "Milkshake.rar" or any unexpected archive from an unverified source: