The FTC says watch out for:
Fees that are not disclosed clearly or prominently. Scam lenders may say you've been approved for a loan and then call or email demanding a fee before you can get the money.
Any up-front fee that the lender wants to collect before granting the loan is a cue to walk away especially if you're told it's for "insurance" "processing" or just "paperwork."
Legitimate lenders often charge application appraisal or credit report fees but they disclose those fees clearly and prominently; they take their fees from the amount you borrow; and the fees usually are paid to the lender or broker after the loan is approved.
A loan offered by phone. It is illegal for companies doing business in the U.S. by phone; to promise you a loan; and ask you to pay for it before they deliver.
Always check a company's phone number from an outside source and verify they are who they say they are. And get a physical address too -- company that advertises a PO Box as its address is one to check out with the appropriate authorities.
Lenders not registered in your state. Lenders and loan brokers are required to register in the states where they do business. To check registration call your state Attorney General's office or your state's Department of Banking or Financial Regulation.
A lender who asks you to wire money or pay an individual; legitimate lenders don't ask anyone to do that. And don't use a wire transfer service or send money orders for a loan -- legitimate lenders don't pressure their customers to wire funds.