Files from third-party ROM sites like Romslab are frequently flagged by users for potential malware. If the archive contains an .exe file instead of an .nsp once extracted, it is almost certainly a virus.
Before opening any downloaded files, it is highly recommended to upload the download link or the file itself to VirusTotal to scan it against multiple antivirus engines. Technical & Legal Risks ORI-AND-THE-WILL-OF-THE-WISPS-NSP-ROMSLAB.rar
To use this file, you would need a modified Switch running custom firmware (CFW). Connecting to official Nintendo servers while running such software or pirated games often leads to a permanent ban from the eShop and online play. Files from third-party ROM sites like Romslab are