Yes. There are a couple scams going on. You need to NOT give money to somebody saying that they are going to modify your loan upfront. If they are legitimate they may ask for money at the end of the modification process but not upfront. Several people have lost thousands of dollars.
The US Trustees office is investigating this and helping to cooperate with the Attorney General's offices both in Kansas and Missouri.
The new scam that is currently going on is to get an accountant to do a forensic accounting of your mortgage. That ususally is a scam.