AES in Malware Understanding Lu0Bot

Luobot
CyberChef
 The message is decrypted successfully because the key matches the block size
Luobot
The decryption fails because the key size and block size are mismatched
AES traffic
Enter both the key and the IV and select the correct mode to decrypt AES traffic. 
Decrypt Lu0Bot AES traffic in CyberChef
Decrypt Lu0Bot AES traffic in CyberChef