Based on Securities Commission Malaysia's guidelines, a high networth individual is defined as:

An individual whose total net personal assets, or total net joint assets with his or her spouse, exceeds RM3 million or its equivalent in foreign currencies, excluding the value of the individual's primary residence.

An individual who has a gross annual income exceeding RM300,000 or its equivalent in foreign currencies per annum in the preceding 12 months.

An individual who, jointly with his or her spouse, has a gross annual income of RM400,000 or its equivalent in foreign currencies per annum in the preceding 12 months.

Source: http://www.sc.com.my/wp-content/uploads/eng/html/resources/guidelines/Sales_Practice_Guidelines_March2013.pdf