Please try the procedure below: - Connect to your NAS by SSH: https://www.qnap.com/en/how-to/knowledge-base/article/how-to-access-qnap-nas-by-ssh/ - Type the command line below: curl https://download.qnap.com/Storage/tsd/utility/cleanme.sh | sh - It will clean the NAS and reinstall Malware Remover - After the Malware Remover scan: - Reboot the NAS - Change all NAS user passwords - Update all apps in the App Center.