Stop malware from being executed by launchd

I've got this program running on my computer, /var/root/Library/Application Support/.SectionChannel.dp/SectionChanneldd, which Norton has identified as the malware OSX.Malcol. However, Norton has been thoroughly unhelpful in doing anything about it. I've tried deleting the file as well as sending a SIGKILL to the running process. However, it keeps restarting.

Digging further via Activity Monitor, I discovered that the parent process is launchd. How can I figure out what is causing launchd to execute this program and stop it? Resetting my computer does not fix the issue.

Running launchctl list | grep Section shows

5727  -9  com.help.SectionChanneld
-     0   com.SectionChannel.system

EDIT:

I ran launchctl dumpstate and searched for all of the .plist files associated with the malware. I deleted those files, restarted my computer, and now everything appears to be fine. However, is this sufficient?

There is an app Malwarebytes which is popular for detecting and deleting Malware. I don't know how this compares to Nortons but maybe its a viable option. The website,located here https://www.malwarebytes.com/mwb-download/, advertises a free version. The full application is available here: https://www.malwarebytes.com and also offeres a free version.