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What to do with infected files


alex30
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Hi,

I hope I am in the right place, apologies if not.

I have just quarantined some files but note they are system 32 files which I presume are needed for the PC to run right.

Is it possible to replace or repair the said files or is it nothing to worry about ?

Any help would be appreciated as I haven't got a clue.

Here is the log

Malwarebytes' Anti-Malware 1.40

Database version: 2744

Windows 5.1.2600 Service Pack 3

05/09/2009 13:47:35

mbam-log-2009-09-05 (13-47-35).txt

Scan type: Quick Scan

Objects scanned: 86060

Time elapsed: 7 minute(s), 32 second(s)

Memory Processes Infected: 0

Memory Modules Infected: 1

Registry Keys Infected: 1

Registry Values Infected: 0

Registry Data Items Infected: 2

Folders Infected: 1

Files Infected: 3

Memory Processes Infected:

(No malicious items detected)

Memory Modules Infected:

C:\WINDOWS\system32\EqnClass32.dll (Trojan.Tracur) -> Delete on reboot.

Registry Keys Infected:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\b4d4b53d665 (Trojan.Tracur) -> Delete on reboot.

Registry Values Infected:

(No malicious items detected)

Registry Data Items Infected:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows\AppInit_DLLs (Trojan.Tracur) -> Data: c:\windows\system32\eqnclass32.dll -> Delete on reboot.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows\AppInit_DLLs (Trojan.Tracur) -> Data: system32\eqnclass32.dll -> Delete on reboot.

Folders Infected:

C:\WINDOWS\system32\LocalService (Worm.Archive) -> Quarantined and deleted successfully.

Files Infected:

C:\WINDOWS\system32\EqnClass32.dll (Trojan.Tracur) -> Delete on reboot.

C:\WINDOWS\system32\LocalService\67.tmp (Worm.Archive) -> Quarantined and deleted successfully.

C:\WINDOWS\system32\GroupPolicy000.dat (Malware.Trace) -> Quarantined and deleted successfully.

Regards Alex

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  • Root Admin

Please run the following.

Please download ComboFix from Here or Here to your Desktop.

**Note: In the event you already have Combofix, this is a new version that I need you to download. It is important that it is saved and renamed following this process directly to your desktop**

  1. If you are using Firefox, make sure that your download settings are as follows:
    • Tools->Options->Main tab
    • Set to "Always ask me where to Save the files".

[*]During the download, rename Combofix to Combo-Fix as follows:

CF_download_FF.gif

CF_download_rename.gif

[*]It is important you rename Combofix during the download, but not after.

[*]Please do not rename Combofix to other names, but only to the one indicated.

[*]Close any open browsers.

[*]Close/disable all anti virus and anti malware programs so they do not interfere with the running of ComboFix.

-----------------------------------------------------------

  • Very Important! Temporarily disable your anti-virus, script blocking and any anti-malware real-time protection before performing a scan. They can interfere with ComboFix or remove some of its embedded files which may cause "unpredictable results".
  • Click on this link to see a list of programs that should be disabled. The list is not all inclusive. If yours is not listed and you don't know how to disable it, please ask.

    -----------------------------------------------------------


  • Close any open browsers.
  • WARNING: Combofix will disconnect your machine from the Internet as soon as it starts
  • Please do not attempt to re-connect your machine back to the Internet until Combofix has completely finished.
  • If there is no internet connection after running Combofix, then restart your computer to restore back your connection.

-----------------------------------------------------------

[*]Double click on combo-Fix.exe & follow the prompts.

[*]When finished, it will produce a report for you.

[*]Please post the "C:\Combo-Fix.txt" along with a new HijackThis log for further review.

**Note: Do not mouseclick combo-fix's window while it's running. That may cause it to stall**

If you still cannot get this to run, try booting into Safe Mode, and run it there.

To boot into Safe Mode, tap F8 after BIOS, and just before the Windows logo appears. A list of options will appear, select "Safe Mode."

If this doesn't work either, try the same method (above method), but name Combofix.exe to iexplore.exe instead, or winlogon.exe..

This because It also happens in some cases that malware blocks EVERY process except for what is in its own whitelist, so this whitelist also includes system important processes such as iexplore.exe, explorer.exe, winlogon.exe...

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  • Root Admin

Due to the lack of feedback this Topic is closed to prevent others from posting here. If you need this topic reopened, please send a Private Message to any one of the moderating team members. Please include a link to this thread with your request. This applies only to the originator of this thread.

Other members who need assistance please start your own topic in a new thread. Thanks!

The fixes and advice in this thread are for this machine only. Do not apply the instructions from this thread to your own machine. Please start a new thread describing your issue and someone will be along to assist you.

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