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ComboFix issue


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#1 ludo2

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Posted 16 January 2011 - 11:31 AM

Hello dear knowledged users,

ComboFix helped me a lot some time ago for a malware issue.

Today, I'm facing some small issues but don't know from where it's coming.
So, I tried first complete scan with my McAfee, Malwarebytes and Spybot.
I've made a defrag, chkdsk, and launched CCleaner. But nothing changed.

So I launched again Combofix (just in case). But maybe I was wrong.

I first well desactivated McAfee and Windows Defender, and let Combofix auto-update.
Then it started but stopped as quick. No time setup change and no step executed.
It turned for some hours before I reboot my computer manually.
On drive c:, it created a Combofix directory wich is in fact a mirror of "My computer" with all drives. SOLVED

What can I do to solve this ?
Should I just delete this mirror and will it erase everything ? SOLVED
Why Combofix do not start ? Is it an issue on my hard disk (due to the 4Ko bad sectors) ?
Is there any good software I could use to monitor my hard drive and repair it if needed ?


thanks a lot for your comments.

Ludo2

Edited by Orange Blossom, 16 January 2011 - 07:02 PM.
Moving to AV forum. ~ OB


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#2 quietman7

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Posted 16 January 2011 - 10:12 PM

As a general policy, Bleeping Computer does not offer advice on how to run ComboFix unless we asked someone to run it or if there is a problem with the computer caused by running the tool. This is because people should not be using ComboFix without being advised to do so by a trained expert (i.e. Malware Response Team) who is assisting a member deal a malware issue on that system. When issues arise due to complex malware infections, possible false detections, problems running ComboFix or with other security tools causing conflicts, experts are usually aware of them and can advise what should or should not be done while providing individual assistance. Those attempting to use ComboFix on their own do not have such information and are at risk when running the tool in an unsupervised environment.

Further, using ComboFix is only one part of the disinfection process. Preliminary scans from other tools like DDS, RSIT and GMER should be used first because they provide comprehensive logs with specific details about files, folders and registry keys which may have been modified by malware infection. Analysis of those logs allows planning an strategy for effective disinfection and a determination if using ComboFix is necessary.

With that said, what you describe is expected behavior by design. This is a working folder for ComboFix which is created when ComboFix is interrupted while running or fails to run properly.

Download a fresh copy of ComboFix and save it to your Desktop.

Click Posted Image > Run... and type in the run dialog box: ComboFix /Uninstall
  • Press OK.
    -- Vista/Windows 7 users refer to these instructions: How to Enable Run Command in Windows 7 or Vista
  • If you encounter any problems using the switch from the Run dialog box, just rename ComboFix.exe to Uninstall.exe, then double-click on it to remove.
  • This will delete ComboFix's related folders/files, reset the clock settings, hide file extensions/system files, clear the System Restore cache and create a new Restore point.

Afterwards, please do NOT run ComboFix again unless asked to by a member of the Malware Removal Team.
Why? Please read the pinned topic ComboFix usage, Questions, Help? - Look here.
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#3 ludo2

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Posted 17 January 2011 - 01:16 PM

Yes, I understood and I fully agree that I launched Combofix at my own risks.
I know it's a very powerfull tool and there is not the question.

I made a combofix after a lot of other things as written before, including GMER without any positive results.
The aim was to give first the log to a friend working in an internet company for analysing by knownlegded people before posting here if needed.

The issue is that if someone would asked me to launch ComboFix (Malware Response Team or someone else), the result would be the same : Combofix is not starting the process and I don't know why.

The Dell Support Center tells me the disk failed at the reading test in the short SMART autotest (due to 4 Ko bad clusters ?).
Could it be the reason ? I'm forecasting to mirror disk data and partition to another disk.


Thanks

Ludo2

#4 quietman7

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Posted 17 January 2011 - 02:19 PM

The issue is that if someone would asked me to launch ComboFix (Malware Response Team or someone else), the result would be the same : Combofix is not starting the process and I don't know why.

Not necessary as the MRT have alternative ways to get CF to run when it encounters problems.
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