How to permanently remove Trojan:Win32/NSteal.SA from my computer. Defender blocks and removes but it returns on every boot.

If the trojan returns on every boot, it suggests that it may be hiding in a location that Defender is not scanning or it is being reinstalled by another process. Here are steps you can take:

1. Safe Mode: Boot your computer in Safe Mode and run a full scan with Microsoft Defender.
2. Update Defender: Ensure Microsoft Defender is fully updated.
3. Check Startup Programs: Use Task Manager to check for suspicious startup programs and disable them.
4. Use Additional Tools: Consider using additional malware removal tools like Malwarebytes for a second opinion.
5. System Restore: If possible, restore your system to a point before the infection occurred.
6. Reinstall OS: As a last resort, consider reinstalling your operating system to ensure complete removal.

If the issue persists, you may want to consult with a professional for further assistance.

Hello @Bruce Kronberg ,

Here is a guide on what to do when Defender Detects Trojan:Win32/NSteal.SA threat.

https://www.microsoft.com/en-us/wdsi/threats/malware-encyclopedia-description?Name=Trojan:Win32/NSteal.SA

I hope this helps to answer your question. If you find the answer above helpful, please Accept the answer to help anyone in the community who might have a similar question to quickly find the solution.