That's the reality of modern war. Many countries are likely planting malware on a wide scale. You can't even really prove where an attack originated from, so uninvolved countries would also be smart to take advantage of the current conflict. Like if you primarily wrote German, you would translate your malware to Chinese, Farsi, English, or Hebrew, and take other steps to make it appear to come from one of those warring countries. Any country who was making a long term plan involving malware would likely do it around this time.