The CopyCat Malware is an auto ad-clicking malware, which automatically clicks ads when you're on the infected app. That said, they have managed to earn around $1.5 million in ad revenue.
Hackers are capable of rooting the device, serving fraudulent advertisements, installing fraudulent applications, and stealing app installation credits. The CheckPoint firm says that installing the apps directly from the Google Play Store should prevent the device from being infected.
So, to stay secured and away from these apps, check out the reviews for the app and game before downloading it. And if you find a bad review, then ignore the app.