Published Dec 06, 2016 | Updated Sep 15, 2017

Trojan:Win32/Petya.G

Severe |Detected with Windows Defender Antivirus

Aliases: No associated aliases

Summary

Windows Defender Antivirus  detects and removes this threat.

This ransomware can stop you from using your PC or accessing your data. It might ask you to pay money to a malicious hacker.

It may be installed by malicious documents with embedded macro, such as Trojan:O97M/Goldeneye.A.

Our ransomware page has more information on this type of threat.

Note: On June 27, 2017, a new variant of Ransom:Win32/Petya was observed spreading in several countries. The new variant added a worm-like capability that allows it to spread across affected networks. Read about the Petya outbreak here:

Microsoft doesn’t recommend you pay the ransom. There is no guarantee that paying the ransom will give you access to your files.

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.

You can also ask for help from other PC users at the Microsoft virus and malware community.

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

Use cloud protection

Use cloud protection to help guard against the latest malware threats. It’s turned on by default for Microsoft Security Essentials and Windows Defender for Windows 10. 

Go to All settings > Update & security > Windows Defender and make sure that your Cloud-based Protection settings is turned On.

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