Malaysians are required to obtain a VISA to enter Australia.
Please check for a suitable VISA by visiting the Department of Home Affairs of Australia's website at https://immi.homeaffairs.gov.au/visas/getting-a-visa/visa-listing. Kindly note that VISA grant is the sole prerogative of the Australian Government.
Non-Australian citizens may also check the latest advice on VISA applications from the Department of Home Affairs at https://immi.homeaffairs.gov.au/check-twice-submit-once
(Update: Malaysian passport holders are advised to obtain a visa early as the current processing is around one (1) month for subclass 601 - Electronic Travel Authority, ETA)