Trying to clone fob mifare "classic" 1k

Hello, i have problem with clonning proxy-card Mifare Classic 1k . I work trough device Proxmark3 Easy.
UID: A9 0F 9C 98
[+] ATQA: 00 04
[+] SAK: 08 [2]
[+] Possible types:
[+] MIFARE Classic 1K
[=] proprietary non iso14443-4 card found, RATS not supported
[#] 1 static nonce 01200145
[+] Static nonce: yes

By doing a staticnested attack , I can’t remove the block dump normally - the trailer is encrypted