Hi krumbll,
The log looks clean. Malwarebytes seem to have eliminated the rogue task and the corresponding PS1 script. As to how the infection happened, I'm not sure, but there have been some software downloads (including a torrent app) on 2023-06-21 and later that may have caused it.
In a recent case, the log was clean, but reinfection happened whenever Minecraft was launched. It was due to a bad Minecraft mod. If threat alerts appear again, please vet your programs and keep everything updated.