Malware
Moriya
This tool is a passive backdoor which allows attackers to inspect all incoming traffic to the infected machine, filter out packets that are marked as designated for the malware and respond to them.
Moriya is a Windows malware family.
Background
Moriya is a passive backdoor that monitors all inbound traffic on a compromised host, singling out packets flagged for the malware and replying to them. This mechanism establishes a covert channel through which operators can run shell commands and retrieve their output.
Source: Malpedia (Fraunhofer FKIE).