Photos showed these wierd tracks in the Martian surface. A mystery. Finally, one of the landers captured a picture of a dust devil, mystery explained. So there is wind. The atmosphere is mostly CO2, and thin, but enough to have some wind. So you need some whooshy whirly wind sounds.

Also there are Marsquakes. Rocks are the same density as the sand, but when things shake a little, some sand slips down from above a rock to underneath. This has the effect that rocks buried in sand gradually rise to the surface. So you need some sandy streamy sounds, with occasional somethings as a rock comes to the surface.

Also the sand gets ripples and trails as the wind swirls around rock formations.

In my opinion, Mars has never had life. It was created bare, and will have life at some point. Right now it's in a holding orbit while God works with the earth. So your composition should look to the exciting future...