It's none other than Joshua Little.
The same guy who bowled so well against both England and Australia in his previous games. He has been exceptional in the ongoing world cup to say the least.
His performances against some top teams in the tournament are as follows -
3–0–16–2 vs England. It was majorly responsible for Ireland's victory against England.
4–0–21–2 vs Australia. Amazing bowling yet again across all stages of the game.
4–0–22–3 vs New Zealand. Yet another amazing display of fast bowling.
Against New Zealand, he claimed the much impressive hat-trick. He first dismissed a well set Kane Williamson. He then got rid off a dangerous James Neesham. He further followed it up by claiming the wicket of Mitchell Santner.
Enroute, he became the first ever Irish bowler to claim a T20 world cup hat-trick in the Super 12 stages.