Add a doc on Windows anti-malware submission procedure (#2546)

Author: Gedochao

.github/release/img/submit-for-malware-analysis-1.png

@@ -34,8 +34,8 @@
       git push origin v1 -f
       ```
 - [ ] Submit Scala CLI MSI installer `scala-cli-x86_64-pc-win32.msi` for malware analysis. The Msi file must be uploaded
-  using this [service](https://www.microsoft.com/en-us/wdsi/filesubmission). If you have any questions, please contact
-  with [lwronski](https://github.com/lwronski).
+  using this [service](https://www.microsoft.com/en-us/wdsi/filesubmission). For more information on this process, refer
+  [here](windows-antimalware-analysis.md).
 - [ ] Unmark release as `pre-release`.
 - [ ] Announce the new release
     - [ ] announce on Twitter

.github/release/img/submit-for-malware-analysis-2.png

@@ -0,0 +1,66 @@
+# Microsoft anti-malware analysis
+
+As new Scala CLI are (wrongly) assumed to be PUA (potentially unwanted applications) by Microsoft Defender SmartScreen 
+on Windows, we need to submit them for analysis to Microsoft after release.
+
+Note: the analysis may take time, and the results may not be immediately available. 
+Sometimes it's days, sometimes it's weeks.
+It may even occur that the new release gets analysed while the previous one is still in the pipeline 
+due to reasons unknown to us. 
+As those eventually do pull through, we can't do much about it.
+
+## Submitting a file for analysis
+
+After going through the [release procedure](release-procedure.md), we need to submit the MSI installer for analysis.
+Download the `scala-cli-x86_64-pc-win32.msi` and upload it using this [service](https://www.microsoft.com/en-us/wdsi/filesubmission).
+
+You will need to log in using your company account authorised by the VirtusLab IT division. 
+If you don't have one or if the one you do have doesn't have the right permissions 
+(even though you are a maintainer of the Scala CLI repository), be sure to reach out to IT.
+
+## Submission form
+
+When reaching https://www.microsoft.com/en-us/wdsi/filesubmission, you will be presented with a form to fill out.
+
+![image](img/submit-for-malware-analysis-1.png)
+
+Submit file as a `Software Developer` and click continue.
+
+![image](img/submit-for-malware-analysis-2.png)
+
+Make sure to grant your team members access to the submission by adding their emails 
+in the `Give additional user s access to the submission` section.
+You can find the current Scala CLI team listed in the [Scala CLI publish module definition](../../project/publish.sc)
+You might also want to add the `[email protected]` group email address.
+
+Select `Windows Server Antimalware` as the security product used to scan the file.
+Fill in `VirtusLab` as the `Company Name`.
+
+![image](img/submit-for-malware-analysis-3.png)
+
+#### What do you believe this file is?
+Select `Incorrectly detected as PUA (potentially unwanted application)`.
+
+#### Detection name 
+Microsoft Defender SmartScreen prevented an unrecognised app from starting.
+
+#### Definition version
+The version number for the Scala CLI release.
+
+#### Additional information
+Paste the following, fixing swapping out the version number and release link accordingly.
+```text
+This is the Scala CLI v<version number> installer for Microsoft Windows. 
+Scala CLI is the official runner of the Scala programming language. 
+For more information check https://github.com/VirtusLab/scala-cli/releases/tag/v<version number>
+```
+
+Click continue.
+
+![image](img/submit-for-malware-analysis-4.png)
+
+You might have to verify that you're a human, after which the submission should proceed.
+
+![image](img/submit-for-malware-analysis-5.png)
+
+Double-check the submission details are correct, ending the process.