Diagonal Box Stitch
The pattern of the stitches look a little bit like corner-to-corner crochet, also called diagonal box stitch, but the effect is achieved when working in rows rather than on the diagonal. Some designers have mixed up the two, so there are occasionally patterns that describe the crazy stitch instructions but call it the c2c stitch. If it's worked on the diagonal (with the first "row" being just one box, the next two boxes, etc.") then it's the corner-to-corner stitch; if it's worked in true rows then it's the crazy crochet stitch.