They create apps and capture victims once they have downloaded and installed the app. And the next what happens are the things that you mentioned. People are looking for ways to watchout the situation of the world for this pandemic.
Yes, that operation is really conventional, they always do that if there's an event where they can seize the opportunity to lure people. The apps that they created can be used as their platform for those victims, that's why we should be very knowledgeable in checking the apps that we are using. Some apps and websites are obviously a fraud so just check its website appearance if it seems legit. Also, those apps will give you some stressful times as if you want to subscribe to their platform, the money that you will pay to them will be scammed quickly.
But before installing, they have to verify the source and its authenticity. Not everything that they see are legit, they need to check it and everyone must be aware that scammers don't take rest even if we are in this dire situation.
Always check the legitimacy of a certain apps or website, because that two is the most useful platform for them to fool people. Most especially, we are experiencing a pandemic and many people are building some organization that will help people to donate money for poor people, that is the key to them to make a scam.
Be knowledgeable about that so you prevent losses to your money, also, never trust easily and be the first one to stand so that those scammers will be noticed. If you suspect some fraud fundraisers, learn to investigate and report it to the authority.