You have been re-routed to the TrojanDropper:Win32/Sirefef write up because TrojanDropper%3aWin32%2fSirefef has been renamed to TrojanDropper:Win32/Sirefef



This threat is a member of the Win32/Sirefef family.

Microsoft security software detects and removes this threat.

This trojan can install other malware or unwanted software onto your PC.

Find out ways that malware can get on your PC.

What to do now

Use the following free Microsoft software to detect and remove this threat:

You should also run a full scan. A full scan might find other, hidden malware.

Get more help

You can also see 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.

The summary tab has all the available details for this threat.

Alert level: Severe
First detected by definition: 1.109.666.0
Latest detected by definition: 1.185.3011.0 and higher
First detected on: Jul 29, 2011
This entry was first published on: Jul 29, 2011
This entry was updated on: Not available

This threat is also detected as:
No known aliases