In a malicious manner, or for malicious reasons(adverb)
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Use "maliciously" in a sentence
"MoveOn. org is joining Barack Obama and the DNC in maliciously misquoting John McCain, said Republican National Committee spokesman Alex Conant."
"“Little rooster,” she called maliciously to him in zenyan, “little cock, where is your crow?"
"And only this word maliciously is in the Statute material, as this term forcible is in the statute of forcible entries; by which statute if a man enter peaceably, and put not his adversary out forcibly, it is no offence, but if he put him out forcibly, then by that statute it is an offence."