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How to remove Sirefef.AH and Sirefef.AC infections

Sirefef.AH (Sirefef.AC), also referred to as Trojan:Win32/Sirefef.AH (Trojan:Win32/Sirefef.AC), often comes bundled  with AC version of Sirefef virus, or other infections of its strain.
The trojan propagation is based on  Java runtime vulnerabilities. It is a common  opinion of all  malware experts that removal of Sirefef.AH (Sirefef.AC) needs to  be performed    in combination with relevant updating of Java vulnerabilities, or else the trojan is very likely to reoccur. The conclusions has already been proved by a number of case studies and user’s  complaints.
Get rid of Sirefef.AH (Sirefef.AC) and fix  the errors  in your operating system that  has  led to the  malware invasion.  Free scanner for  relevant extermination and system repair action is available here.

Sirefef.AH and Sirefef.AC behaviour and details:


  • Sirefef.AH and Sirefef.AC may seriously slow your computer;
  • Sirefef.AH and Sirefef.AC may be difficult to remove manually;
  • Sirefef.AH and Sirefef.AC may generate other fake alerts;
  • Sirefef.AH and Sirefef.AC is the consequence of other malware infections;
  • We recommend to remove Sirefef.AH and Sirefef.AC automatically.

Automated removal:

It is critically important to remove Sirefef.AH and Sirefef.AC, yet there might be a number of other threats to deal with. Without a doubt, presence of one infection on your PC increases the odds of having more than one threat, other things being equal, for every infection definitely weakens computer system.

The tool to get rid of Sirefef.AH and Sirefef.AC takes the above consideration into account as it detects the infections through entire hard and removable memory submitted in order that it can delete the specified parasites. It is a multi-purpose solution to satisfy the variety of your computer protection needs. In the meantime, its ability to perform the extermination of rogue in question has been tested specifically, and empirical evidence available that it does cope with the task.

Sirefef.AH and Sirefef.AC Uninstaller

Sirefef.AH and Sirefef.AC manual removal instructions:

Incorrect or incomplete deletion happens when one or more constituents of deleted rogue are omitted and/or harmless files and registry values are abolished instead. Such improper act rather harms than cures. If you stand for the manual procedure and is about to apply it, please completely delete the rogue in a strict accordance with the list below.

Remove Sirefef.AH and Sirefef.AC files:

%System%\drivers\[RANDOM CHARACTERS].sys


C:\WINDOWS\system32\[random name].dll

Remove Sirefef.AH and Sirefef.AC registry entries:

HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main “Use FormSuggest” = ‘Yes’

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” = ‘.zip;.rar;.nfo;.txt;.exe;.bat;.com;.cmd;.reg;.msi;.htm;.html;.gif;.bmp;.jpg;.avi;.mpg;.mpeg;.mov;.mp3;.m3u;.wav;.scr;’

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Attachments “SaveZoneInformation” = ’1′

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer “NoDesktop” = ’1′

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System “DisableTaskMgr” = ’1′

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run “[random].exe”

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run “[random]”

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\Windows\CurrentVersion\Explorer\Advanced “Hidden” = ’0′

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced “ShowSuperHidden” = ’0′

Related removal guides:

  1. Remove Trojan.Sirefef.BV virus
  2. Get rid of Trojan:Win32/Sirefef.P as is or as a part of larger infection
  3. Get rid of Win32/Sirefef.CH browser oppressor and the peril of drawing your PC into botnet
  4. Remove Win32/Sirefef.DT to let useful apps run properly and delete malicious program that wears skin of fair system utility
  5. Removal of TR/Sirefef.BP.1 in spite of its attempts to get its removers confused

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