For SPOT 5 images, you could use the Airbus DS GeoStore directly:

http://www.intelligence-airbusds.com/geostore/

But Airbus already has a few partners within Malaysia, maybe you find a way to cooperate with any of them for your needs:

http://www.remotesensing.gov.my/portalarsm/index.php

http://www.jpsurveys.com/

Depending on your exact need for resolution and repeat cycles, you could also give the freely available Sentinel-2 or Landsat-8 data a chance to fulfill your needs:

http://sentinel-pds.s3-website.eu-central-1.amazonaws.com/browser.html

https://landsatlook.usgs.gov/

Here's one paid option

http://eyefind.rapideye.com/

You may also try the google earth engine (https://explorer.earthengine.google.com). You need to sign up and get a key in a couple of hours or days to work their data. They have many satellite images available from different sensors around the world.

Hope this helps!

Consider this link: http://www.slideshare.net/Atiqa_khan/open-sources-for-satellite-imagery-2016. It may help you in finding open sources + purchasing options for satellite imagery. 

Thank you so much