That's your bog standard 0.156" Molex KK series 5 position (only 3 are used). Housing is Molex P/N 09-50-3051 and suitable contacts are 08-50-0106. Those contacts only accept down to AWG18, but AWG16 can probably be crammed in. If you just grab an old IEC PC power cable and hack the end off, it's usually AWG18 inside which is sufficient for a monitor.
You can buy both the housings and contacts at Digi-Key as well as other places. Make sure you get some extra contacts since you'll probably mess a few up if you've never done this before.