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Published Mar 26, 2015 | Updated Sep 15, 2017

Ransom:Win32/Isda

Detected by Microsoft Defender Antivirus

Aliases: FileCryptor.ANH (AVG) Trojan.Win32.FileCoder (Ikarus)

Summary

Windows Defender detects and removes this threat.

The threat encrypts your files and asks you to contact the email provided in order to receive instructions on how to decrypt your files.

This threat can be bundled with other malware. It can also be downloaded when you click on a link in a spam email.

Find out ways that malware can get on your PC.  

You can read more on our ransomware page.

If you are asked to pay a fee or fine to unlock your files, Microsoft doesn’t recommend you pay it.

If you've already paid, see our ransomware page for help on what to do now.

Run antivirus or antimalware software

Use the following free Microsoft software to detect and remove this threat:

You should also run a full scan. A full scan might find hidden malware.

Advanced troubleshooting

To restore your PC, you might need to download and run Windows Defender Offline. See our advanced troubleshooting page for more help.

Get more help

You can also visit our advanced troubleshooting page or search the Microsoft virus and malware community for more help.

If you’re using Windows XP, see our Windows XP end of support page.

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