Welcome to Android Central! Which phone? Where are you seeing this?
It looks like it's an OPPO system app:
https://www.apkmirror.com/apk/oppo/atmwifimeta/. Since it's a system app, I wouldn't worry about it. Don't trust everything you read on the web about malware -- if you did a search for any given system app, you'd probably find lots of unfounded scaremongering posts about how it's spyware or malware, which is virtually always untrue. Sure, there may be the occasional unscrupulous manufacturer that preinstalls a shady system app, but these are typically ones that serve up unwanted ads, not ones that steal your data or your firstborn.
EDIT: It's not only an OPPO system app, but it's also provided by Mediatek, which is the manufacturer of your phone's CPU:
https://apkcombo.com/atmwifimeta/com...k.atmwifimeta/
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