The win moves moves Usuthu up to the third in the Betway Premiership standings, four points behind league leaders Orlando Pirates, who have two games in hand.
Arrows, meanwhile, remain tenth on the table - three points behind eighth-placed Durban City.
It was Abafana Bes'thende that applied pressure and they were awarded a penalty in the first-half stoppage-time when Siyanda Ndlovu was fouled in the box.
Junior Dion stepped up for the spot-kick but his effort hit the crossbar as the teams went into the halftime break with the game goalless.
Amazulu then took the ascendancy early after the interval and, in the 56th minute, took the lead when Hanamub received the ball on the left, cut in and unleashed a stunning shot that left goalkeeper Xolani Ngcobo with no chance.
Arrows coach Manqoba Mngqithi looked to his bench to turn things around and introduced Brandon Theron with 20 minutes remaining.
The move almost paid off but Usuthu shot-stopper Olwethu Mzimela produced a brilliant double save deny Theron and then Angelo Van Rooi.
Amazulu then held out in the closing stages to make sure they ended their fixtures for the calendar year on a high note.
Orlando Pirates brought the curtain down on their 2025 campaign in style after dethroning the Carling All-Stars with a deserved 2-0 victory in the Carling Cup final at Moses Mabhida Stadium on Saturday.
Former Bafana Bafana striker Shaun Bartlett believes South Africa may finally have found a player capable of threatening the national team's long-standing goal-scoring records.
Mamelodi Sundowns stars Iqraam Rayners and Bathusi Aubaas have earned a major career boost after signing a lucrative endorsement deal with global sportswear giant Puma.
Former Kaizer Chiefs midfielder Mandla Masango believes the club is showing clear signs of progress this season, even as questions continue over their co-coaching structure and inconsistency in front of goal.
