Microsoft security software
detects and removes this threat.
This threat is a member of the Win32/Sirefef family. Trojans in this family can do different things, including:
Sirefef variants can be installed by other malware, including members of the Trojan:Win32/Necurs 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.
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.
Note that as part of the cleaning, our software might change some Windows services back to their default settings. If you had previously changed these settings, you might need to change them again.
The services that are reset include:
You can also visit our advanced troubleshooting page or search the Microsoft virus and malware community for more help.
See the Win32/Sirefef family description for more information.
Alerts from your security software may be the only symptom.
Take these steps to help prevent infection on your PC.
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