Hemsworth, 29, hired "disso queen" Laura Wasser to represent him in the split.
Sources told TMZ that Cyrus, 26, and the "Hunger Games" star had a prenuptial agreement, so the division of property likely won't be an issue.
Insiders also claimed that Cyrus attempted to reconcile with Hemsworth as recently as this past week, but that he refused her overtures.
“They had many happy days together in Los Angeles and now Liam is not around. It’s hard for her to be back in LA without him,” a source previously told People. “This is not the situation that she wanted. She hoped they could figure things out.”
In a report released Wednesday, a source told People that despite Cyrus' over-the-top antics – including "basically having sex" in public with rebound Kaitlynn Carter and releasing a song hinting that Hemsworth's alleged penchant for "whiskey and pills" were to blame for their breakup – she "didn't want to hurt" Hemsworth.
“Her song was her way of telling her story without having to say anything at all. She isn’t trying to bash him, but she wants to be able to share what she’s been going through,” the source said.
Another insider alleged, “Miley doesn’t talk about Liam much and is not dwelling in the past. She doesn’t want to hide, and her mood has changed drastically. She seems much more relaxed and happy.”
Cyrus and Hemsworth tied the knot in December 2018 after losing their Malibu home in a wildfire. They announced their separation after eight months of marriage and more than a decade of on-again-off-again romance earlier this month — hours after photos were published of the "We Can't Stop" singer kissing Carter while vacationing in Italy.
Reps for Hemsworth and Cyrus did not immediately return Fox News' request for comment.