On the IOS app store at this moment: A version 2.19.51 update for Whatsapp.
Description: "You can now see stickers in full size when you long press a notification".
So, Whatsapp knew about this vulnerability? That's meant to be the patched version.
Also the malware practically sounds as if it's got root access ("can alter your call logs"). What's to prevent it faking the update process when you do it and how do you know the malware is gone?