Zombie ZIP is a technique used by attackers to hide malware within ZIP archives. It exploits a discrepancy between how different programs read the ZIP file format.
If you are not referring to the security vulnerability, "B66zip" might be a typo for: B66zip
Are you currently dealing with a file that or one that was flagged by your antivirus ? Zombie ZIP is a technique used by attackers
: An archive is created with a header that falsely claims the content is uncompressed. B66zip