The home side, now without a win at One Call Stadium in 10 games, made a promising start and had three great chances before Paul Hayes opened the scoring.
Iron goalkeeper Sam Slocombe made a great diving save to his right to thwart Matt Rhead after three minutes and saw Rhead and Lee Stevenson miss the target in other good early chances for the Stags.
But the visitors rarely looked in danger after that as they made it seven wins and two draws in this nine-game purple patch.
Mansfield were again booed off at the end and Murray admits they need extra quality.
"You could see what we are up against," he said.
"But the frustrating thing is we did have chances. At half time we were only losing to a wonder strike while we could have had three goals. That's the fine lines you are dealing with and that's why they are where they are and why we are where we are.
"You will probably see that goal on Sky Sports News for a few days as he put it into the top corner. We had a couple of chances down the other end when we could have done that.
"That is the bit of X-factor we are missing right now. We know we need extra quality - the question is can we get it?
"We keep saying the same thing the last two months. We let ourselves down. If they had come here and dominated the whole game then fair enough, you hold your hands up.
"But our defending is sloppy at times and we make bad decisions.
"We have got to be realistic. Anyone can run round and give 110 per cent. No one can question these boys worked hard and ran around and gave 110 per cent. But we sometimes run without thinking about it. So is that just down to the standard of the players?
"Now's the time for the players to stand up and be counted. We are looking for characters.
"The crowd were brilliant in spells. But we can't expect them to be behind us the whole game when we are not winning here.
"I was a bit upset about individuals getting a bit of abuse coming off at the end.
"I know people are frustrated, but we are a team and we stick together."