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By Wednesday, the clip, shared on Nine News' Facebook page, had been viewed more than 1.2 million times.
In a Facebook post Wednesday, the Port Macquarie Koala Hospital, which is caring for the koala, identified the rescuer by only her first name, Toni.
"She is an absolute legend for capturing this male koala who was so disorientated by the flames and unfortunately was burnt further as he headed back into the active fire," the post read.
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Rescuers are calling him Ellenborough Lewis, a nod to Toni's grandchild, the hospital added.
"He has been treated and is now in the five star accommodation at the Koala Hospital," according to the post.
Nine News, citing a spokesperson for the facility, reported that the approximately 14-year-old koala has a "50-50" chance of survival.
If you'd like to contribute to the hospital, check out its GoFundMe campaign here.
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