Please help a newb with trojan removal Sirefef-PL and Sirefef-ZT

Viruses and worms
1

I have been working alone at this thing for about 24 hours with no luck. Got rid of Mcafee and installed Avast. The trojan currently effects my internet connection and firewalls. I’m set up with another laptop and usb key to transfer the necessary logs and files back and forth. If I could get some help removing these and getting back to a clean pc that would be greatly appreciated.

whoever is willing to help, please let me know what the first step would be. I’m a newb at virus removal, but not at pc navigation

  • Chris
2

Windows 7 x64

3

Follow this guide and attach the logs…not copy and paste http://forum.avast.com/index.php?topic=53253.0

AdwCleaner
Malwarebytes
OTL
aswMBR

when done a removal expert will have a look…

4

will report back soon

5

Monitoring

6

How many logs will i be attaching? want to make sure i get them all in one

7

4…you can dropp OTL extra.txt…but dont delete it in case he ask for it

8

Additionally could you run the first RogueKiller scan

9

RK found 2, should I click delete and continue as the instructions say or hold tight?

10

As promised…logs

FYI Mcafee originally found these trojans as ZeroAccess.hi (desktop.ini) and Generic.dx!bfws (also desktop.ini)

11

more…

12

OK lets get at it. I used RogueKiller to double check the MBR

Warning This fix is only relevant for this system and no other, using on another computer may cause problems

Be advised that when the fix commences it will shut down all running processes and you may lose the desktop and icons, they will return on reboot

Run OTL

[*]Under the Custom Scans/Fixes box at the bottom, paste in the following

https://dl.dropbox.com/u/73555776/OTL_Fix.GIF


:OTL
O3 - HKU\S-1-5-21-1962424431-1743801456-3809780122-1000\..\Toolbar\WebBrowser: (no name) - {7473B6BD-4691-4744-A82B-7854EB3D70B6} - No CLSID value found.
[2012/11/09 13:37:52 | 000,004,608 | -HS- | M] () -- C:\Windows\assembly\GAC_32\Desktop.ini
[2012/11/09 13:37:52 | 000,006,144 | -HS- | M] () -- C:\Windows\assembly\GAC_64\Desktop.ini

:Files
C:\Windows\Installer\{5b636341-02e3-4bbb-e010-142b918bf05d}

:Commands
[resethosts]
[emptytemp]
[CREATERESTOREPOINT]
[Reboot]

[*]Then click the Run Fix button at the top
[*]Let the program run unhindered, reboot the PC when it is done
[*]Open OTL again and click the Quick Scan button. Post the log it produces in your next reply.

THEN

Download and Install Combofix

Download ComboFix from one of the following locations:
Link 1
Link 2

VERY IMPORTANT !!! Save ComboFix.exe to your Desktop

  • IMPORTANT - Disable your AntiVirus and AntiSpyware applications, usually via a right click on the System Tray icon. They may otherwise interfere with our tools. If you have difficulty properly disabling your protective programs, refer to this link here

[*]Double click on ComboFix.exe & follow the prompts.
[*]Accept the disclaimer and allow to update if it asks

http://img.photobucket.com/albums/v706/ried7/NSIS_disclaimer_ENG.png

http://img.photobucket.com/albums/v706/ried7/NSIS_extraction.png

[*]When finished, it shall produce a log for you.
[*]Please include the C:\ComboFix.txt in your next reply.

Notes:

  1. Do not mouse-click Combofix’s window while it is running. That may cause it to stall.
  2. Do not “re-run” Combofix. If you have a problem, reply back for further instructions.
  3. If after the reboot you get errors about programmes being marked for deletion then reboot, that will cure it.

Please make sure you include the combo fix log in your next reply as well as describe how your computer is running now

13

on it…

14

combofix alerts me that mcafee antivrus and antispyware real time scanners are active, please disable before clicking ok…mcafee has been uninstalled though

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Accept the warning and continue ;D

16

otl 2nd log and combofix

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Could you confirm that all alerts have now ceased ? Also do you have any other problems ?

18

I clicked avast and an error popped up

C:\Program Files\AVAST Software\Avast\AvastUI.exe

Illegal operation attempted on a registry key that has been marked for deletion

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it seems that everything is throwing the same error, even a text file on the desktop, registry key marked for deletion

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Reboot to allow Combofix to release the registry