Stramaccioni has admitted Moratti was left unimpressed by the 4-1 loss.
"The President is angry and regretful as we all are and rightly so," he told Sky Sport Italia.
"I still haven't had the chance to analyse this collapse with my players. Today is another day and the Inter we saw yesterday wasn't the real one.
"Now we have two important challenges coming up and we need to put yesterday's match behind us. I've never backed down.
"Our thoughts are on getting a result in Romania and winning the derby."