Author Topic: Computer is Infected But Avast Can't Find Anything  (Read 6118 times)

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Offline MADman123

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Computer is Infected But Avast Can't Find Anything
« on: December 19, 2011, 05:35:22 AM »
I was subject to a phising attack, which avast! appeared to protect me from, however I began to recieve error messages, which made no sense if you comprehend computer terminology. I preformed a full scan, and recived more critical error reports, which I ignored, knowing they were reslut of the virus. Then I preformed a full boot-time scan, which found nothing. Upon the completion of startup, it appeared windows was running, in a sort of half state. No icons are visible, nothing appears to function. Avast appears to still be operational, and is requesting to run an executable in the sandbox, which clearly has trojan in the directory, and is originated from an a webpage, I suspect was where the attack originaly tried to send me. Task manager has been disabled, and I no longer appear to be the administrartor. Does anyone know what I can do?

Offline Pondus

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Re: Computer is Infected But Avast Can't Find Anything
« Reply #1 on: December 19, 2011, 07:25:15 AM »
follow this guide and attach all logs...not copy and paste
http://forum.avast.com/index.php?topic=53253.0

Offline MADman123

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Re: Computer is Infected But Avast Can't Find Anything
« Reply #2 on: December 19, 2011, 05:38:33 PM »
Very sorry to trouble you further, but as it says at the bottom, I am unable to view my files, etc. It says that I should not use any of the temporary file cleaners is Malwarebytes considered one of these?

Offline Pondus

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Re: Computer is Infected But Avast Can't Find Anything
« Reply #3 on: December 19, 2011, 05:48:15 PM »
Quote
It says that I should not use any of the temporary file cleaners is Malwarebytes considered one of these?
NO.....but this is what Rogue Killer will fix...as you see under that line

Offline essexboy

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Re: Computer is Infected But Avast Can't Find Anything
« Reply #4 on: December 19, 2011, 09:22:32 PM »
Once you have run RogueKiller option 6 and have attached the logs here can you let me know what the state of your icons/folders are please

Offline MADman123

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Re: Computer is Infected But Avast Can't Find Anything
« Reply #5 on: December 20, 2011, 12:17:10 AM »
I have attached some report files, and the scree-shot. I will post the rest in another reply, as there was a limit. All problems appear to be resolved, however I noticed that aswMBR found a suspicious file. After the completion of RogueKiller, all files and icons were restored, with access. Desktop icons appeared after Malwarebytes was run. Thankyou very much for your help.

Offline MADman123

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Re: Computer is Infected But Avast Can't Find Anything Report Files
« Reply #6 on: December 20, 2011, 12:21:51 AM »
The rest of the report files.

Offline Pondus

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Re: Computer is Infected But Avast Can't Find Anything
« Reply #7 on: December 20, 2011, 12:33:11 AM »
there may be some leftovers to kill...
Essexboy will do that tomorrow when he has seen the OTL log   ;)

Offline essexboy

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Re: Computer is Infected But Avast Can't Find Anything
« Reply #8 on: December 20, 2011, 08:31:21 PM »
Avast is reporting one system file as suspicious so I will need to check that out

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
    Quote
    :OTL
    O3 - HKU\S-1-5-21-1659004503-179605362-682003330-1004\..\Toolbar\WebBrowser: (no name) - {2318C2B1-4965-11D4-9B18-009027A5CD4F} - No CLSID value found.
    O3 - HKU\S-1-5-21-1659004503-179605362-682003330-1004\..\Toolbar\WebBrowser: (no name) - {D4027C7F-154A-4066-A1AD-4243D8127440} - No CLSID value found.
    [2011/09/13 09:47:57 | 000,000,000 | ---D | M] -- C:\Documents and Settings\Dawn\Application Data\WhiteSmoke

    :Files
    ipconfig /flushdns /c
    C:\WINDOWS\tasks\At*.job
    xcopy %Temp%\smtmp\1 "%AllUsersProfile%\Start Menu" /H /I /S /Y /C
    xcopy %Temp%\smtmp\2 "%UserProfile%\Application Data\Microsoft\Internet Explorer\Quick Launch" /H /I /S /Y /C
    xcopy %Temp%\smtmp\3 "%AppData%\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar" /H /I /S /Y /C
    xcopy %Temp%\smtmp\4 "%AllUsersProfile%\Desktop" /H /I /S /Y /C

    :Commands
    [purity]
    [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, also allow the installation of the recovery console




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

Offline MADman123

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Re: Computer is Infected But Avast Can't Find Anything
« Reply #9 on: December 21, 2011, 03:20:18 AM »
I have attached all the logs. My computer is running faster, than before the infection, and I think it has also improved a bit from the last set of scans I preformed. Thankyou again for all your help.

Offline essexboy

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Re: Computer is Infected But Avast Can't Find Anything
« Reply #10 on: December 21, 2011, 09:11:44 PM »
Can you confirm that all your icons/files and folders are back

Also what problems are you experiencing now ?

Please download Malwarebytes' Anti-Malware[/b]
 
Double Click mbam-setup.exe to install the application.
  • Make sure a checkmark is placed next to Update Malwarebytes' Anti-Malware and Launch Malwarebytes' Anti-Malware, then click Finish.
  • If an update is found, it will download and install the latest version.
  • Once the program has loaded, select "Perform Quick Scan", then click Scan.
  • The scan may take some time to finish, so please be patient.
  • When the scan is complete, click OK, then Show Results to view the results.
  • Make sure that everything is checked, and click Remove Selected.
  • When disinfection is completed, a log will open in Notepad and you may be prompted to Restart.(See Extra Note)
  • The log is automatically saved by MBAM and can be viewed by clicking the Logs tab in MBAM.
  • Copy&Paste the entire report in your next reply.

Extra Note:
If MBAM encounters a file that is difficult to remove, you will be presented with 1 of 2 prompts, click OK to either and let MBAM proceed with the disinfection process, if asked to restart the computer, please do so immediately.[/b]

Offline MADman123

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Re: Computer is Infected But Avast Can't Find Anything
« Reply #11 on: December 22, 2011, 02:30:22 AM »
I attached the quick scan report file. I cant confirm, but I am almost certain that all my folders have returned, and I am certain that all icons have returned. I can not find anymore issues with my machine, it's working almost as well as when I first used it. Thanks again for all your help.

Offline essexboy

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Re: Computer is Infected But Avast Can't Find Anything
« Reply #12 on: December 22, 2011, 08:56:14 PM »
Subject to no further problems   :)

I will remove my tools now and give some recommendations, but, I would like you to run for 24 hours or so and come back if you have any problems 

Now the best part of the day ----- Your log now appears clean  :thumbsup:

A good workman always cleans up after himself so..The following will implement some cleanup procedures as well as reset  System Restore points:

Run OTL
  • Under the Custom Scans/Fixes box at the bottom, paste in the following
    Quote
    :Commands
    [resethosts]
    [emptytemp]
    [CLEARALLRESTOREPOINTS]
     [Reboot]
  • Then click the Run Fix button at the top
  • Let the program run unhindered, reboot the PC when it is done
Remove ComboFix
  • Hold down the Windows key + R on your keyboard. This will display the Run dialogue box
  • In the Run box, type in ComboFix /Uninstall
     (Notice the space between the "x" and "/")
    then click OK



  • Follow the prompts on the screen
  • A message should appear confirming that ComboFix was uninstalled
Run OTL and hit the cleanup button.  It will remove all the programmes we have used plus itself. 

We will now confirm that your hidden files are set to that, as some of the tools I use will change that
  • Click Start.
  • Open My Computer.
  • Select the Tools menu and click Folder Options.
  • Select the View Tab.
  • Under the Hidden files and folders heading select Do not show hidden files and folders.
  • Click Yes to confirm.
  • Click OK.
   Your Java is out of date.
Older versions have vulnerabilities that malware can use to infect your system.
Please follow these steps to remove older version of Java components and upgrade the application.

 Upgrading Java:
  • Go to this site  and click Do I have Java
  • It will check your current version and then offer to update to the latest version
Now that you are clean, to help protect your computer in the future I recommend that you get the following free programmes:

Malwarebytes.

Update and run weekly to keep your system clean

Download and install FileHippo update checker and run it monthly it will show you which programmes on your system need updating and give a download link

It is critical to have both a firewall and anti virus to protect your system and to keep them updated. To keep your operating system up to date visit To learn more about how to protect yourself while on the internet read our little guide  How did I get infected in the first place ?Keep safe  :wave:

Offline MADman123

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Re: Computer is Infected But Avast Can't Find Anything
« Reply #13 on: December 30, 2011, 02:30:58 AM »
Sorry for taking so long, but the removal went well, and my computer is still functioning perfectly. Thanks  ;D