They are WhatsApp chat files. They contain either an archive of your WhatsApp messages or a backup of your WhatsApp settings. You can prevent the creation of them, open WhatsApp, and tap 3 dots top rh corner. Tap Settings. Tap Chats. Tap Chat backup. Tap Frequency. Toggle on Never.
I want to backup chat lets say i want to change phone i want old chat as well But i dont want these files in my phone Because it looks like some virus files lol