Description of Sirefef.O and consequences of its residing on your PC’s

Sirefef.O (Trojan:Win32/Sirefef.o) has been marked as extra severe threat instantly due to high number of samples submitted by users along with descriptions of its activities. The described by victims consequences of its activities such as numerous software failures and connectivity issues have been proved in the course of follow-up examination carried out in IT labs.
To remove Sirefef.O malware you may need enhanced security solution. Click here to guarantee disposal of the trojan as a part of total memory purification without detriment to harmless entries and without mercy for parasites.

Technical Details and screenshots:

  • Full name: Sirefef.O, Trojan:Win32/Sirefef.o
  • Type: Trojan horse
  • Origin: China

Signs of being infected with Sirefef.O

Downloading free movies, codec on demand, software, e-books are the main methods for the adware dissemination. These also serve as signs by which one can judge whether the rogue is inside one’s PC.
If you have seen alerts urging you on the trojan, that still might a false positive. The infection could protect itself in a novel way as its copies could be produced from encrypted source into variable folder. Your AV software would report it recurrently reassuring you that it has managed to get rid of Sirefef.O, but then it goes on with these alerts so that users often believe their security tool is adware and uninstall it.
In order to clean your PC of the trojan and its tricky supplement, click here so that your computer memory would be set free of any kind of malware and protected from further invasions.

Sirefef.O automatical removal:

A huge number of trojans can be downloaded in the same way as the sirefef malware. The anti-trojan and anti-virus solution below free-scan computers comparing memory entries against the most extended database of threat descriptions, as well as point out potential threats applying alternate approaches such as behavior analyzes.

Sirefef.O Removal Tool

Manual Removal of Sirefef.O:

There might be no manual routine available for the trojan or such routines are too numerous as the trojan is a family specific detection. The above remark is not subject to amendments whether the method is provided below.

Remove Sirefef.O files and dll’s:


Unregister Sirefef.O registry values:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run “.exe”
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run “”
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings “CertificateRevocation” = ’0′
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings “WarnonBadCertRecving” = ’0′
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop “NoChangingWallPaper” = ’1′
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Associations “LowRiskFileTypes” = ‘/{hq:/s`s:/ogn:/uyu:/dyd:/c`u:/bnl:/ble:/sdf:/lrh:/iul:/iulm:/fhg:/clq:/kqf:/`wh:/lqf:/lqdf:/lnw:/lq2:/l2t:/v`w:/rbs:’
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Attachments “SaveZoneInformation” = ’1′
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System “DisableTaskMgr” = ’1′
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system “DisableTaskMgr” = ’1′
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Download “CheckExeSignatures” = ‘no’
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main “Use FormSuggest” = ‘yes’
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced “Hidden” = ’0′
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced “ShowSuperHidden” = 0′

Sirefef.O removal