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Microsoft Security Intelligence
Published Nov 06, 2016 | Updated Jan 29, 2018


Detected by Microsoft Defender Antivirus

Aliases: Virus.Win32.Nimnul.a (Kaspersky) W32/Ramnit.a (McAfee) W32/Ramnit-A (Sophos) W32.Ramnit.B!inf (Symantec) PE_RAMNIT.DEN (Trend Micro)


Microsoft Defender Antivirus detects and removes this threat.

This threat downloads and installs other programs, including other malware, onto your PC without your consent.

This threat is a fileless malware. To read more information about fileless malware and how Microsoft security technologies mitigate these evasive threats, read: Now you see me: Exposing fileless malware.

Find out ways that malware can get on your PC.  

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.

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.

Get more help

You can also see our advanced troubleshooting page for more help 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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