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Published Apr 07, 2014 | Updated Sep 15, 2017


Detected by Microsoft Defender Antivirus

Aliases: Trojan.Win32.Sefnit (Ikarus)


Windows Defender detects and removes this threat.

This threat is a part of the Win32/Sefnit family of trojans. It can give a malicious hacker access to your PC, download files, and use your PC and Internet connection for click fraud.

It can also use your PC to mine Litecoins.

This type of threat can be downloaded by other malware, or bundled with other software and downloaded through peer-to-peer file sharing networks.

If you have this detected on your PC, then it's likely you're infected with other parts of the Win32/Sefnit family.

The following free Microsoft software detects and removes this threat:

Even if we've already detected and removed this particular threat, running a full scan might find other malware that is hiding on your PC.

Get more help

You can also see our advanced troubleshooting page for more help.

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

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