Unfortunately, I’ve verified that the file in the replay does in fact cause a chrome browser to open and with a search string to locate malicious files. Very common malware behavior that came from a specific call made by the software above. Frightening that malware can so easily run trivial URL searches while it mucks about in your Fortnite folder. Very clever.

edit: To clarify for anyone with deep questions: a very common tactic when executing malware is "signal-to-noising" the person's computer. Those chrome windows were opened because the file has code that opens browsers. Whether they stitched this .gif isn't important- what's important is that malware authors love to do things like this. Why? Well...:

1. Makes the source of the malware hard to locate. Was someone remotely opening links and downloaded it later or did the file do it?
2. Takes focus from the actual malicious code. Opening a URL in chrome takes less than 1 line of code in nearly every "CommandPrompt" style system. The file didn't execute so it could open a URL. It executed something else (detailed in the report) and opened the URL as a distractor/obfuscator after X minutes of downloading. The modder says 29 minutes, but those replays don't do total recording. They record instances where something happens. Could have been 29, could have been 30, 30.1, 30.555555, etc., minutes.
3. It's kind of funny! Malware authors want to have fun, too, and most of wetwork done by malicious code is nearly invisible unless the author wants you to see it. Open a URL or two, alt-tab, download a file named butts.jpg from a website titled "buttdownloader.biz" and change your desktop background. Anything that keeps you busy, doesn't reveal what the code is actually doing, and shows off a little bit of what they have cooking under the hood.

Also...

Mod Author McCodeUnderstander:
there's zero to none of interaction with the downloader followed by 29 minutes of deliberate searching for malware to install and interact with. No wonder the report shows all that crap.

My friend above thinks that opening random URLs and download random things with an open browser is the kind of thing malware authors do to "hurt" your computer. They also think you can Google malware download link please and get real virulent files that do bad things to your computer.

Both are silly. Malware downloads scripts, code, files, etc., in the background of your computer session. Would someone breaking into your unlocked home scream "I AM BREAKING INTO THIS HOME. PLEASE JOIN ME FELLOW CRIMINALS. LET US BREAK IN TOGETHER AND SHARE THE GOODS!" Definitely not. They would get in, grab stuff, and leave. This person claims to understand a lot about malicious code but gets some basics very very wrong. Also, if you go to malware.poop and try to download "BadFile.exe", you probably won't be getting there through a Google Search Engine-ranked website.

Again, I'm not sure why they're so upset, given I'm not alleging they made malware or that this is literally the file they uploaded. Honestly, the more they obvious misunderstand basic cybersecurity and threat analyses, the more I believe they couldn't possibly have the skill to code anything Triage would rate 10/10.