US rapper Soulja Boy has been targeted by cyber vandals who defaced his MySpace profile and published his email and YouTube passwords on the internet.

The hackers, reportedly part of the popular online community 4chan, contacted Soulja Boy demanding he hand over $US2500 in order to regain control over his account.

The rapper, who published tracks on the internet before becoming a mainstream star in September last year with the number one hit Crank That (Soulja Boy), refused.

His MySpace page was then wiped out and replaced with obscenity-laden messages where Soulja Boy purportedly declared his homosexuality and told fans to "go f--- yourselves".

The miscreants also published the rapper's passwords - including to his email, souljaboytellem@mac.com - on the internet, and flooded his website's online chatroom.

The saga ended when Soulja Boy's record label, Interscope, contacted MySpace and demanded the account be returned.

His YouTube and email accounts have also been returned, Soulja Boy said in a recent YouTube video.