Hey HeathenJeff, I posted this in the general thread too, but wanted to respond to you directly, hope this helps!
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I wanted to follow up to this solution b/c this solution ultimately saved me. However, it's a year later and the malware has different app names and file names, and the policies are all different. So I wanted to update with my solution. Thanks to @Skanson for the original help with the Terminal commands, I wouldn't have known how to do that.
With inspiration from many different forums, I did several things which seem to have gotten rid of the problem entirely (fingers crossed):
1) Immediately delete/uninstall whatever malicious program you downloaded that ended up taking over Chrome. Mine was called "Macbook Cleaner Pro." I got a message from a website saying I needed to install the most up to date Adobe Flash Player, which was a clever trick b/c I actually have gotten legitimate updates like that several times throughout the last year, so I immediately downloaded it without thinking. Big mistake.
2) I used Malwarebytes to find any remaining files linked to Macbook Cleaner Pro (MCP). Although people are skeptical of Mac malware programs for good reason (I was using Dr. Cleaner for a while which eventually removed critical launch files that allowed my computer to restart and shutdown and I ended up having the wipe the computer and reinstall everything), Malwarebytes identified 5 additional MCP files through its normal scan function and deleted them. Happy about that b/c I wouldn't have found them myself.
3) The next thing I did was reset Chrome settings to default after exporting my bookmarks, which I didn't actually have to do b/c it is saved in the cloud, but just for good measure. Quit Chrome and reopen.
4) The final issue is all of the Chrome policies the malware installed automatically on Chrome that make it impossible to sign in to Chrome and show the message saying "Chrome is managed by your organization" or something similar, essentially cutting you out from changing settings, extensions, signing in, etc. And of course the malware is probably reading all of your movements and information and selling it to someone. I was on a bunch of different websites that warned against deleting policies that might be critical to the functioning of Chrome. But I eventually came across a blog that said that policies aren't necessary, that you only have them if Chrome is being managed by someone else or if you put them there yourself. Which I never have.. So, my conclusion was that Chrome shouldn't have any policies running. Into your address bar in Chrome, type in chrome://policy. Then use the following command online that you should plug into the Terminal app on Mac one by one with the name of the policy at the end:
defaults write com.google.Chrome [POLICYNAME]
Put that into Terminal, hit enter, paste again and change the policy name, hit enter, etc. This process is deleting the policy you type in every time you hit enter. Do that one by one for every policy you see listed. When you're done, quit Chrome and reopen. Should fix it! If you can't see the entire policy name, click on it, it'll open a new tab that should read the entire policy name.
That solved the problem for me! Can't speak for anyone else, and I'm definitely not a computer whiz, but I wanted to throw this on here for other Mac users like me who are struggling.
