These are suppose to be ketupat. The rice is supposedly wrapped in woven palm leave pouch and boiled but since this is the 21st century, things gets to be less complicated (and making the leave pouch takes skills man) they invented ketupat in a pastic casing. Tadah. Problem solved and easy to cook. Although the art of ketupat making is diminishing.
Ketupat or packed rice is a type of dumpling from Brunei, Indonesia, Malaysia, the Philippines (where it is known by the name pusô in Cebuano, bugnóy in Hiligaynon, patupat in Kapampangan, or ta’mu in Tausug), and Singapore. (wikipedia)