The winner of the $1.5 billion Mega Millions jackpot has been identified as a "she," but is still choosing to remain anonymous, according to a press release from her attorney.

The anonymous winner is a South Carolinian who was visiting Greenville from out of town and chose to take a "scenic drive during some down time" when she passed the KC Mart in Simpsonville. She decided to purchase a ticket there after the sign advertising the huge jackpot "caught her eye," the release said.

When she realized she was the winner the morning after the drawing, "complete shock and disbelief" set in and she jumped in joy, the release said.

Her prize, which she opted to take her winnings as a one-time payment of $877,784,124, was the largest jackpot in U.S. history.

After drawing the ticket in Simpsonville last October, it wasn't until a few weeks ago that the winner claimed her prize, sparking widespread speculation over why a winner hadn't come forward. According to the release, the anonymous woman was researching how to remain anonymous and manage her sudden influx of cash.

She is donating some of her winnings to the City of Simpsonville Arts Center, among other charities to "show her appreciation" to South Carolina and Simpsonville, according to the release. The others include:

Ronald McDonald House of Charities of Columbia, S.C.

One S.C. Fund – for Hurricane Florence Relief

In The Middle, Columbia, S.C.

American Red Cross Alabama Region - Tornado Relief Fund

The anonymous winner is being represented by New York attorney Jason Kurland, who specializes in lottery winning, according to his firm's website. Some of his other large-lottery winning clients include: