You can install VirusTotal App your Splunk using the Splunk Web:

1. Log in to your Splunk instance: Access to your Splunk instance by logging in.
2. Go to the Applications menu: In the Applications menu, select Find More Apps.
3. Select VirusTotal App: On the Browse More Apps page, search for VirusTotal App or select it from the search results.
4. Install VirusTotal App: Click Install to add the app to your Splunk environment.
5. Log in with your splunk.com credentials: Enter your splunk.com login credentials to authenticate.
6. Accept the license terms: Read and accept the application’s license agreement.
7. Complete the installation: Click Login and Install to finish the installation process.