Trojan.Agent refers to a generic Trojan malware detection. It is used for detections that are either associated with no specific malware families or not enough information is available to pinpoint the malware family.
Trojan.Crypt is the generic detection for Trojans that are obfuscated in any way.
Malwarebytes protects users from Trojan.Crypt by using real-time protection.
Malwarebytes can detect and remove Trojan.Crypt without further user interaction.