"Skrilla" is slang for money: www.urbandictionary.com/define.php?term=skrilla
See also the lyrics for "Cash in My Pocket" by Wiley:
> All I really want is money in my pocket
> Cash in my hand, oh, skrilla in my wallet
> All I really want is money in my pocket
> Cash in my hand and skrilla in my wallet, yeah
http://www.metrolyrics.com/cash-in-my-pocket-lyrics-wiley.ht...
NB: This doesn't stop it still being an awful name, but it might explain why they chose it.