County, who finished fifth in their maiden top-flight campaign last season, have lost all of their three matches so far this term.
The Highland club followed defeats to Celtic and Partick Thistle with a tepid 4-0 loss to St Johnstone on Saturday. It was the first time Derek Adams, their manager, had lost three matches in a row while in charge and he responded angrily to the performance afterwards.
"I was pleased to see Derek react in the manner he did to the result," said MacGregor. "He was proud of the standards set last season and Saturday fell short."
"It is difficult to see what has went wrong in the last couple of games but we will put it right."