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.Stantiko is the detection for the Backdoor associated with the Stantiko botnet.
Trojan.Stantiko can be used to execute certain operations such as searches, filling out forms, signing up for email lists you’re unaware of, and even allow other backdoor activities. The backdoor has a loader to execute any executable, allowing the threat operators to execute any code on the thousands of machines that belong to this botnet. It contains two malicious Windows services that can reinstall the other if one is deleted. At the moment, it is mainly used for Adfraud.
Malwarebytes protects users from Trojan.Stantiko by using real-time protection to block the bundlers that install it.
Because the two malicious Windows services can reinstall the other if one is deleted, both must be deleted at the same time—Malwarebytes can do this.Malwarebytes can detect and remove Trojan.Stantiko without further user interaction.