Worm
WORMHOLE
WORMHOLE is a TCP tunneler that is dynamically configurable from a C&C server and can communicate with an additional remote machine endpoint for a relay.
WORMHOLE is a Windows worm operated by Lazarus Group.
Background
WORMHOLE is a TCP tunneling tool whose configuration can be adjusted on the fly from a C&C server, and it is able to talk to a further remote machine endpoint to act as a relay.
Source: Malpedia (Fraunhofer FKIE).