Fullback Tuivasa-Sheck came up into the attacking line and threw a lovely cut-out ball for Daniel Tupou to score the Roosters' second try.
When Maloney kicked a penalty conversion at the 15-minute mark, the Roosters were completely dominating the contest, enjoying 82 per cent possession.
Despite the Roosters having the ascendancy for the first stanza, the Storm went into the sheds only down 12-2 and would have considered themselves very much in the contest.
However when Ryan Hinchcliffe got disorientated after a tackle and played the ball straight back to the opposition, it seemed to set the tone for Melbourne's second half.
Another Maloney penalty soon after pushed the Roosters' lead back out to 12.
The Roosters right side then proceeded to put the contest to bed.
First they put the ball through some speedy hands to send Aubusson over.
He turned provider 11 minutes later when after producing a lovely flick pass for Kenny-Dowall's second as the Roosters completed a dominant performance.
Roosters coach Trent Robinson praised his side for a near-faultless performance.
"I think we've been good since the rep round," he said.
"I'm not too sure where Melbourne were at tonight but I thought we were pretty good ... It was our third good performance in a row.
"We've just got to keep building and keep improving."
The Storm botched their opportunity to jump into top spot on the ladder with coach Craig Bellamy describing his side's performance as "soft as butter".
"I'm not sure why we would start like that," Bellamy said.
"We probably started both halves like that and the only times we were really competitive was in the last 10 or 12 minutes of the first half.
"At the end we were lucky to score two and they were unlucky to only score 24.
"I'm not quite sure why we would lack that sort of intensity and aggression."
- AAP