Cromok is a thrash metal band from Malaysia. They are known to be the pioneers of thrash metal music in Malaysia. Consists of three members, Shamsudin Ali as Vocalist and Bassist, Khairul Anuar Shariff as Guitarist, and Tarmizi Mokhtar as Drummer. Cromok was formed in 1986 by four young students, Shamsuddin Ali (Sam), Khairul Anuar Shariff (Karl), Muhammad Khairuddin (Din), and Tarmizi Mokhtar (Miji).
They were studying at the University of Wollongong, in Australia. While in Australia, they decided to form a thrash metal band and they frequently perform their music in small concert and gigs. They got positive responses and steadily gaining their fans, made their name within the Australian Underground Thrash Metal scene rising the ranks along with Australian Godfather bands in the likes of Enticer, SSDC, Mortal Sin, Frozen Doberman, White Trash, Addictive and Detriment. Their single, 'Misty' was their most popular song among their fans in those days.