We're gradually updating threat actor names in our reports to align with the new weather-themed taxonomy. Learn about Microsoft threat actor names
Ransom:JS/CryptoRaa.A
Aliases: No associated aliases
Summary
Windows Defender detects and removes this threat.
The threat renames and encrypts some files on your PC. It might ask you to pay money to a malicious hacker.
Our ransomware FAQ page has more information on this type of threat.
Read our latest report: Ransomware 1H 2017 review: Global outbreaks reinforce the value of security hygiene.
There is no one-size-fits-all response if you have been victimized by ransomware. There is no guarantee that paying the ransom will give you access to your files.
If you've already paid, see 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:
- Windows Defender for Windows 10 and Windows 8.1, or Microsoft Security Essentials for Windows 7 and Windows Vista
- Microsoft Safety Scanner
You should also run a full scan. A full scan might find hidden malware.
Close your browser with Task Manager
You can regain control of your web browser by closing it using the Task Manager.
When you reopen your browser, make sure you don't click 'restore previous session'.
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.
- Windows Defender for Windows 10 and Windows 8.1, or Microsoft Security Essentials for Windows 7 and Windows Vista
- Microsoft Safety Scanner
