Malware
PipeSnoop
aka TOFUPIPE
Cisco Talos states that PipeSnoop can accept arbitrary shellcode from a named pipe and execute it on the infected endpoint.
PipeSnoop, also known as TOFUPIPE, is a Windows malware family.
Background
Per Cisco Talos, PipeSnoop reads arbitrary shellcode from a named pipe and runs it on the compromised endpoint.
Source: Malpedia (Fraunhofer FKIE).