Hello, unfortunately my PC has recently been infected with the sirefef trojan. I’ve tried the regular ways of removing this, but that doesn’t seem to help. I’d love to get some additional advice on how to remove it. I think I’ve attached all the logs needed (due to a limit of 4 attachments i didn’t attach OTL.txt. If you really need this one, let me know and i’ll see if i can attach it in a reply). Just as a precaution I’ve unplugged my ethernet cable in case you’re wondering why i don’t have a connection. (I got spammed with warnings that Avast had prevented a malicious website from opening).
i didn't attach OTL.txt. If you really need this oneyes please......that is the most important log
in that case, here it is 
Monitoring 8)
Hi,
I will be working on your Malware issues 
Step1
Download AVZ Antiviral Toolkit from the following link:
http://support.kaspersky.com/downloads/utils/avz4.zip
[*] Extract the archive to a folder.
[*] Run AVZ (double click on
http://amf.mycity.rs/pg/images/avz.png
icon);
[*] Click on File > Custom Scripts ;
[*] In the new window that opens, Copy/Paste everything inside the field code:
begin
ShowMessage('AVZ will close all network connections.' + #13#10 + 'After the computer restarts the network connection will be restored automatically');
ExecuteFile('net.exe', 'stop tcpip /y', 0, 15000, true);
if not IsWOW64
then
begin
SearchRootkit(true, true);
SetAVZGuardStatus(True);
end;
QuarantineFile('C:\Windows\assembly\GAC_32\Desktop.ini','');
QuarantineFile('C:\Windows\assembly\GAC_64\Desktop.ini','');
QuarantineFile('C:\Windows\Installer\{a6ee8942-16f1-3415-3c82-a7a2fe486eeb}\U\80000064.@','');
QuarantineFile('C:\Windows\Installer\{a6ee8942-16f1-3415-3c82-a7a2fe486eeb}\@','');
DeleteFile('C:\Windows\assembly\GAC_32\Desktop.ini');
DeleteFile('C:\Windows\assembly\GAC_64\Desktop.ini');
DeleteFile('C:\Windows\Installer\{a6ee8942-16f1-3415-3c82-a7a2fe486eeb}\U\80000064.@');
DeleteFile('C:\Windows\Installer\{a6ee8942-16f1-3415-3c82-a7a2fe486eeb}\@');
DeleteFileMask('C:\Windows\Installer\{a6ee8942-16f1-3415-3c82-a7a2fe486eeb}\U', '*', true);
DeleteFileMask('C:\Windows\Installer\{a6ee8942-16f1-3415-3c82-a7a2fe486eeb}', '*', true);
DeleteFileMask('%Tmp%' , '*.*' , true) ;
DeleteDirectory('C:\Windows\Installer\{a6ee8942-16f1-3415-3c82-a7a2fe486eeb}\U');
DeleteDirectory('C:\Windows\Installer\{a6ee8942-16f1-3415-3c82-a7a2fe486eeb}');
BC_ImportAll;
ExecuteSysClean;
BC_Activate;
RebootWindows(true);
end.
[*] Click the Run and wait to execute the script.
Step2
Download ComboFix from here and save it to your Desktop.
If you are unsure how ComboFix works please read this guide carefully.
note: ComboFix must be downloaded to your Desktop.
Temporarily disable your AntiVirus program.
If you are unsure how to do this please read this Instruction.
How to disable avast:
[*]Right-click on the avast! icon in the lower right corner of the screen and choose Open Avast! User Interface.
[*]In the window that opens on the top right corner, click Settings.
[*]In a new window that opens, choose the option Troubleshooting, Uncheck Enable avast! self-defense, and click OK.
[*]Right-click on the avast! icon in the lower right corner of the screen and select avast! shield controls .
[*]In the menu that appears, choose Disable Permanently. When you are prompted to turn off security, click Yes.
Note: Do not forget to turn on this option after the cleaning.
Run ComboFix. Click on I Agree!
ComboFix will check if there is a newer version of ComboFix available.
Click Yes if prompted to download.
ComboFix will display DISCLAIMER OF WARRANTY ON SOFTWARE.
Click Yes to allow ComboFix to continue.
If Recovery Console is not installed, ComboFix will offer download & installation.
Click Yes to allow ComboFix to install Recovery Console.
Note:Do not mouse-click Combofix’s window while it is running.
When the tool is finished, it will produce a log report for you. (typical location: C:[b]ComboFix.txt[/b] )
Attach log reports ( ComboFix.txt) back to topic.
Re-run FSS as before and attach here fresh FSS.txt log
Looks like it’s gone now, i attached the requested logs to be sure.
Open notepad and copy/paste the text present inside the code box below:
RegLock::
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{A483C63A-CDBC-426E-BF93-872502E8144E}]
@Denied: (A 2) (Everyone)
@="FlashBroker"
"LocalizedString"="@c:\\Windows\\SysWOW64\\Macromed\\Flash\\FlashUtil32_11_3_300_270_ActiveX.exe,-101"
.
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{A483C63A-CDBC-426E-BF93-872502E8144E}\Elevation]
"Enabled"=dword:00000001
.
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{A483C63A-CDBC-426E-BF93-872502E8144E}\LocalServer32]
@="c:\\Windows\\SysWOW64\\Macromed\\Flash\\FlashUtil32_11_3_300_270_ActiveX.exe"
.
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{A483C63A-CDBC-426E-BF93-872502E8144E}\TypeLib]
@="{FAB3E735-69C7-453B-A446-B6823C6DF1C9}"
.
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D27CDB6E-AE6D-11cf-96B8-444553540000}]
@Denied: (A 2) (Everyone)
@="Shockwave Flash Object"
.
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D27CDB6E-AE6D-11cf-96B8-444553540000}\InprocServer32]
@="c:\\Windows\\SysWOW64\\Macromed\\Flash\\Flash32_11_3_300_270.ocx"
"ThreadingModel"="Apartment"
.
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D27CDB6E-AE6D-11cf-96B8-444553540000}\MiscStatus]
@="0"
.
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D27CDB6E-AE6D-11cf-96B8-444553540000}\ProgID]
@="ShockwaveFlash.ShockwaveFlash.11"
.
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D27CDB6E-AE6D-11cf-96B8-444553540000}\ToolboxBitmap32]
@="c:\\Windows\\SysWOW64\\Macromed\\Flash\\Flash32_11_3_300_270.ocx, 1"
.
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D27CDB6E-AE6D-11cf-96B8-444553540000}\TypeLib]
@="{D27CDB6B-AE6D-11cf-96B8-444553540000}"
.
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D27CDB6E-AE6D-11cf-96B8-444553540000}\Version]
@="1.0"
.
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D27CDB6E-AE6D-11cf-96B8-444553540000}\VersionIndependentProgID]
@="ShockwaveFlash.ShockwaveFlash"
.
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D27CDB70-AE6D-11cf-96B8-444553540000}]
@Denied: (A 2) (Everyone)
@="Macromedia Flash Factory Object"
.
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D27CDB70-AE6D-11cf-96B8-444553540000}\InprocServer32]
@="c:\\Windows\\SysWOW64\\Macromed\\Flash\\Flash32_11_3_300_270.ocx"
"ThreadingModel"="Apartment"
.
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D27CDB70-AE6D-11cf-96B8-444553540000}\ProgID]
@="FlashFactory.FlashFactory.1"
.
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D27CDB70-AE6D-11cf-96B8-444553540000}\ToolboxBitmap32]
@="c:\\Windows\\SysWOW64\\Macromed\\Flash\\Flash32_11_3_300_270.ocx, 1"
.
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D27CDB70-AE6D-11cf-96B8-444553540000}\TypeLib]
@="{D27CDB6B-AE6D-11cf-96B8-444553540000}"
.
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D27CDB70-AE6D-11cf-96B8-444553540000}\Version]
@="1.0"
.
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D27CDB70-AE6D-11cf-96B8-444553540000}\VersionIndependentProgID]
@="FlashFactory.FlashFactory"
.
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E3F2C3CB-5EB8-4A04-B22C-7E3B4B6AF30F}]
@Denied: (A 2) (Everyone)
@="IFlashBroker4"
.
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E3F2C3CB-5EB8-4A04-B22C-7E3B4B6AF30F}\ProxyStubClsid32]
@="{00020424-0000-0000-C000-000000000046}"
.
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E3F2C3CB-5EB8-4A04-B22C-7E3B4B6AF30F}\TypeLib]
@="{FAB3E735-69C7-453B-A446-B6823C6DF1C9}"
"Version"="1.0"
.
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}\0000\AllUserSettings]
@Denied: (A) (Users)
@Denied: (A) (Everyone)
@Allowed: (B 1 2 3 4 5) (S-1-5-20)
"BlindDial"=dword:00000000
.
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}\0001\AllUserSettings]
@Denied: (A) (Users)
@Denied: (A) (Everyone)
@Allowed: (B 1 2 3 4 5) (S-1-5-20)
"BlindDial"=dword:00000000
.
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}\0002\AllUserSettings]
@Denied: (A) (Users)
@Denied: (A) (Everyone)
@Allowed: (B 1 2 3 4 5) (S-1-5-20)
"BlindDial"=dword:00000000
.
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}\0003\AllUserSettings]
@Denied: (A) (Users)
@Denied: (A) (Everyone)
@Allowed: (B 1 2 3 4 5) (S-1-5-20)
"BlindDial"=dword:00000000
.
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\PCW\Security]
@Denied: (Full) (Everyone)
Save this as CFScript.txt
http://img.photobucket.com/albums/v666/sUBs/CFScriptB-4.gif
Close all browser windows and refering to the picture above.
Referring to the screenshot above, drag CFScript.txt into ComboFix.exe.
ComboFix will will re-run. When finished, it will produce a log for you.
Attach the contents of the log in your next reply. (typical location: C:[b]ComboFix.txt[/b] )
Delete current FSS and download fresh one:
I need you to re-run FSS and attach here fresh FSS log
And here they are
Thats look good. How is your computer running now?
Everything looks fine, no more pop-ups of blocked malicious websites.
So i guess it’s time to thank you guys for all the help and the quick responses. I really appreciate it 
It is necessary to uninstall AVZ Antiviral Toolkit .
[*] Re-run AVZ (double click on
http://amf.mycity.rs/pg/images/avz.png
icon);
[*] The menu choose File > Scripts Standard ;
[*] In the window that opens check the 6 and click Execute Selected Scripts;
[*] Click Yes ;
[*] After the procedure you will receive notification: Script Executed ;
[*] Quit the program and delete the folder where is program.
It is necessary to uninstall the ComboFix :
[*] Click Start (or
http://amf.mycity.rs/pg/images/VistaStartButton.png
) then Run.
On Windows7 or Vista you may use Start Search field if Run is not available.
[*] In the line of text type in (Copy) the following:
ComboFix /Uninstall
Note that there is a space between " ComboFix " and " /Uninstall " .
[*] then click OK (or press Enter ).
Wait for the uninstall process is complete.
Re-run OTL and click on CleanUp! button.
And… done!
Thanks a lot for the help everyone.