Google Workspace does not support configuring labels (folders) that are inaccessible to end-users. This includes the Trash label, which Abnormal currently remediates malicious emails to. Google customers can opt-in to a feature that remediates malicious messages to an inaccessible location by purging the initial email and storing a copy of it in internal data sources in case it needs to be restored.
Remediate Messages to an Inaccessible Location for Google Customers
Google customers can now opt in to purge-based remediation, storing malicious emails internally while keeping them hidden from end users.