[OwnedByJezebel]

That scam has been going on for years. They are usually in another country. Area code 626 is in Calilfornia, area code 801 is in Utah, the names and numbers are most likely ALL fake.

They often place ads for easy income and pull in a naive person in the US and get them to do the money laundering. They claim it is too difficult/expesive/whatever to open a US bank account and promise them a sizable cut to just take their money and forward it on to the person (you) to be "paid." People answer these ads not knowing they are becoming an accomplice in a scam. I suspect that is how you got a package with a fake check from Memphis. The scammer is doing everything they can to mask who they really are.

They always overpay, then ask for the difference via MoneyGram or Western Union. Those can be picked up from any agent anywhere in the world with just a number.

You are lucky that your bank recognized it right off the bat; lots of people have lost money because the check went in the bank, then a few days later the money shows up in the account, not because the check cleared but because it was the banks policy. Then several days later when the check comes back as fake, they have already sent back the overpayment via wire and that money is gone, as well as the item that the scammed person thought that they sold.

I've gotten to where the only time I post things for sale on Craigslist is for garage sales. The scammers come out of the woodwork within minutes, with very vague questions. Do you still have the item? Strange question when your ad was for a multi-family garage sale! Or if it was for a single item, their question does not mention the item at all or even quibble with the price, just something non-specific and odd.