Outbound data constantly blocked by malwarebytes

This behavior sounds a lot like the old Virtumonde virus. It would write itself into the Windows system so no matter how many pieces you found and removed it would essentially reinstall itself at every restart. The only answer for that was to reinstall Windows from scratch, and that may be your solution here.

- Bobby

Apparently Symantec has such info hence its AV should have signature to remove it. Also note, the Trojan creates a PowerShell script that runs once a day. It may have create batch job task.and to run itself even though it has been "cleaned". It probably has its registry not cleaned up. The iexplorer or svchost may be injected on the fly to make those callback.
https://www.symantec.com/security_response/writeup.jsp?docid=2016-020300-4629-99&tabid=2

If the Norton eraser did not help, with latest signature updated, then it is better you refurnish the machine instead trying to clean malware in specific as it is not clean slate anymore.
https://www.symantec.com/security_response/writeup.jsp?docid=2016-020300-4629-99&tabid=3

Can consider doing applocker to enforce only trusted application to run. Use process explorer to see process loading strange libraries and dll. There is also GMER to reveal rootkit.
If disk is not encrypted, try boot on cd and do the scan so that the malware is not running.

Thanks guys for the response, you were both very helpful in my pursuit. I've since solved the issue!

If you would be so kind, how did you finally resolve the issue?

- Bobby

Looks like some critical files may have been repaired. Thanks for sharing. Do rescan using AV just to make sure.

Part of discovery and sharing that makes this contribution worthy as now you shared those experiences : ) thanks

Even AV can have corrupted signature causing BSOD likewise for OS provider. Not be taken by surprise but always have backup and test in staged environment before production rollout.