Malware
Starfighter
According to the author, this is a JavaScript based Empire launcher that runs with its own embedded powershell host to not be dependent on local powershell availability.
Starfighter is a VBScript malware family.
Background
According to its author, this is a JavaScript-based Empire launcher that carries its own embedded PowerShell host so it does not have to rely on PowerShell being available locally.
Source: Malpedia (Fraunhofer FKIE).