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"Application cannot be executed. The file wuauclt.exe is infected" and other problems


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#1 aphw

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Posted 07 September 2010 - 11:48 AM

Hello,

I was just doing some programming on my Vista laptop and suddenly a number of windows popped up, including three or so UAC dialogs, a Windows security dialog and something from whichever anti-virus I have (McAfee I think, oddly I can't remember). I clicked cancel etc. for the UACs. At some point Explorer, Opera and the dialogs closed, and I now have:
  • Microsoft Security Essentials Alert, with "Potential threat details" and a huge list of virus scanners, each with an empty progress bar under the heading "scan result"
  • Security Suite, an unbranded window suggesting I have a number of threats
  • Messages saying "Application cannot be executed" as I said in the thread title
  • The space key being `pressed` repeatedly - meaning that the occasional pop-up (other "Application cannot be executed" ones I think) gets closed immediately, except for some reason not the one mentioned above
I believe this means I can't run any .exe files, but I can't do anything at all anyway because the space key is being sent to Windows continuously. Task manager certainly won't start.

What to do? Restart in safe mode?

Thanks very much for any help.

Edited by aphw, 07 September 2010 - 11:49 AM.


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#2 boopme

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Posted 07 September 2010 - 09:02 PM

Hello,lets see if we can get in and at it like this. You are correct about Safe Mode.



Reboot into Safe Mode with Networking
How to enter safe mode(XP)
Using the F8 Method
Restart your computer.
When the machine first starts again it will generally list some equipment that is installed in your machine, amount of memory, hard drives installed etc. At this point you should gently tap the F8 key repeatedly until you are presented with a Windows XP Advanced Options menu.
Select the option for Safe Mode with Networking using the arrow keys.
Then press enter on your keyboard to boot into Safe Mode
.


>>>> Download this file and doubleclick on it to run it. Allow the information to be merged with the registry.

RKill....

Download and Run RKill
  • Please download RKill by Grinler from one of the 4 links below and save it to your desktop.

    Link 1
    Link 2
    Link 3
    Link 4

  • Before we begin, you should disable your anti-malware softwares you have installed so they do not interfere RKill running as some anti-malware softwares detect RKill as malicious. Please refer to this page if you are not sure how.
  • Double-click on Rkill on your desktop to run it. (If you are using Windows Vista, please right-click on it and select Run As Administrator)
  • A black screen will appear and then disappear. Please do not worry, that is normal. This means that the tool has been successfully executed.
  • If nothing happens or if the tool does not run, please let me know in your next reply
Do not reboot your computer after running rkill as the malware programs will start again. Or if rebooting is required run it again.


If you continue having problems running rkill.com, you can download iExplore.exe or eXplorer.exe, which are renamed copies of rkill.com, and try them instead.



Next run Superantisypware (SAS):

Download and scan with SUPERAntiSpyware Free for Home Users
  • Double-click SUPERAntiSpyware.exe and use the default settings for installation.
  • An icon will be created on your desktop. Double-click that icon to launch the program.
  • If asked to update the program definitions, click "Yes". If not, update the definitions before scanning by selecting "Check for Updates". (If you encounter any problems while downloading the updates, manually download them from here. Double-click on the hyperlink for Download Installer and save SASDEFINITIONS.EXE to your desktop. Then double-click on SASDEFINITIONS.EXE to install the definitions.)
  • In the Main Menu, click the Preferences... button.
  • Click the Scanning Control tab.
  • Under Scanner Options make sure the following are checked (leave all others unchecked):
    • Close browsers before scanning.
    • Scan for tracking cookies.
    • Terminate memory threats before quarantining.
  • Click the "Close" button to leave the control center screen.
  • Back on the main screen, under "Scan for Harmful Software" click Scan your computer.
  • On the left, make sure you check C:\Fixed Drive.
  • On the right, under "Complete Scan", choose Perform Complete Scan.
  • Click "Next" to start the scan. Please be patient while it scans your computer.
  • After the scan is complete, a Scan Summary box will appear with potentially harmful items that were detected. Click "OK".
  • Make sure everything has a checkmark next to it and click "Next".
  • A notification will appear that "Quarantine and Removal is Complete". Click "OK" and then click the "Finish" button to return to the main menu.
  • If asked if you want to reboot, click "Yes".
  • To retrieve the removal information after reboot, launch SUPERAntispyware again.
    • Click Preferences, then click the Statistics/Logs tab.
    • Under Scanner Logs, double-click SUPERAntiSpyware Scan Log.
    • If there are several logs, click the current dated log and press View log. A text file will open in your default text editor.
    • Please copy and paste the Scan Log results in your next reply.
  • Click Close to exit the program.
If you have a problem downloading, installing or getting SAS to run, try downloading and using the SUPERAntiSpyware Portable Scanner instead. Save the randomly named file (i.e. SAS_1710895.COM) to a usb drive or CD and transfer to the infected computer. Then double-click on it to launch and scan. The file is randomly named to help keep malware from blocking the scanner.


Now reboot back to Normal and see if you can run MBAM. You may have to try RKill again.
Next run MBAM (MalwareBytes):

Please download Malwarebytes Anti-Malware (v1.46) and save it to your desktop.
Before you save it rename it to say zztoy.exe


alternate download link 1
alternate download link 2
MBAM may "make changes to your registry" as part of its disinfection routine. If using other security programs that detect registry changes (ie Spybot's Teatimer), they may interfere or alert you. Temporarily disable such programs or permit them to allow the changes.
  • Make sure you are connected to the Internet.
  • Double-click on mbam-setup.exe to install the application.
  • When the installation begins, follow the prompts and do not make any changes to default settings.
  • When installation has finished, make sure you leave both of these checked:
    • Update Malwarebytes' Anti-Malware
    • Launch Malwarebytes' Anti-Malware
  • Then click Finish.
MBAM will automatically start and you will be asked to update the program before performing a scan.
  • If an update is found, the program will automatically update itself. Press the OK button to close that box and continue.
  • If you encounter any problems while downloading the definition updates, manually download them from here and just double-click on mbam-rules.exe to install.
On the Scanner tab:
  • Make sure the "Perform Quick Scan" option is selected.
  • Then click on the Scan button.
  • If asked to select the drives to scan, leave all the drives selected and click on the Start Scan button.
  • The scan will begin and "Scan in progress" will show at the top. It may take some time to complete so please be patient.
  • When the scan is finished, a message box will say "The scan completed successfully. Click 'Show Results' to display all objects found".
  • Click OK to close the message box and continue with the removal process.
Back at the main Scanner screen:
  • Click on the Show Results button to see a list of any malware that was found.
  • Make sure that everything is checked, and click Remove Selected.
  • When removal is completed, a log report will open in Notepad.
  • The log is automatically saved and can be viewed by clicking the Logs tab in MBAM.
  • Copy and paste the contents of that report in your next reply. Be sure to post the complete log to include the top portion which shows MBAM's database version and your operating system.
  • Exit MBAM when done.
Note: If MBAM encounters a file that is difficult to remove, you will be asked to reboot your computer so MBAM can proceed with the disinfection process. If asked to restart the computer, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware.Please ask any needed questions,post logs and Let us know how the PC is running now.
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook

#3 aphw

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Posted 08 September 2010 - 04:20 PM

Thanks very much for the reply. I downloaded the registry file and rkill programs. None of them would run, all the rkills were vanishing immediately, as was regedit when the registry file was run. I downloaded Process Explorer too and could see this happening. Suddenly rkill.scr stayed open, although it has been sitting at "Please be patient" for ages now. Process Explorer shows two instances of pev.rkexe, and a nircmdc.rkexe.

I read the registry file and looked with reg.exe to see whether it said that the things the file was trying to delete were there - they weren't.

Where next?

#4 boopme

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Posted 08 September 2010 - 06:00 PM

Those should be Rkill or tool related files. stop and try again. It could take several tries for Rkill to stop all the alware and run. Or try and see if the SAS and or MBAM will run without RKill
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook

#5 aphw

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Posted 11 September 2010 - 02:34 PM

I ran MBAM since I had it installed already. It came up with two things, I'm afraid I then accidentally closed it though. The trojan then ran out of memory and crashed (!), so I was able to regain complete control of the system. I ran MBAM again and have put the log below. I haven't yet clicked remove in case I should do something else... The two that came up in the first scan didn't come up this time for some reason.

Malwarebytes' Anti-Malware 1.46
www.malwarebytes.org

Database version: 4591

Windows 6.0.6000 (Safe Mode)
Internet Explorer 7.0.6000.17037

11/09/2010 19:26:46
mbam-log-2010-09-11 (19-26-46).txt

Scan type: Full scan (C:\|D:\|)
Objects scanned: 563755
Time elapsed: 2 hour(s), 44 minute(s), 17 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 9

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
C:\Users\Andy\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\0YN41CB5\mqupjickr[1].htm (Rogue.SecuritySuite) -> No action taken.
C:\Users\Andy\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\0YN41CB5\nezgb[1].htm (Trojan.Downloader) -> No action taken.
C:\Users\Andy\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\0YN41CB5\pgaiqxwq[2].htm (Trojan.Agent.HL) -> No action taken.
C:\Users\Andy\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\3AC94T3N\qhysq[1].htm (Trojan.Downloader) -> No action taken.
C:\Users\Andy\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\R12U9WQX\lctnltb[2].htm (Trojan.Downloader) -> No action taken.
C:\Users\Andy\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\R12U9WQX\mqupjickr[1].htm (Rogue.SecuritySuite) -> No action taken.
C:\Users\Andy\AppData\Roaming\Microsoft\Windows\Templates\memory.tmp (Trojan.Bamital.Gen) -> No action taken.
C:\Windows\Temp\reoD7D.tmp (Rootkit.Dropper) -> No action taken.
C:\Users\Andy\Local Settings\Application Data\Windows Server\admin.txt (Malware.Trace) -> No action taken.

#6 boopme

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Posted 11 September 2010 - 04:47 PM

Hello,yes remove those,reboot then run Superantisypware (SAS):
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook

#7 aphw

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Posted 12 September 2010 - 06:31 AM

Thanks, safe mode or not?

#8 boopme

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Posted 12 September 2010 - 12:17 PM

Preferably run SAS in safe mode.
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook

#9 aphw

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Posted 14 September 2010 - 04:15 PM

Came out clean (well, it threw up a few results but they were all tracking cookies or programs I had written...).

Should I do a rootkit scan or something?

#10 boopme

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Posted 14 September 2010 - 07:26 PM

Yes the infection is still blocking the Windows update file. Probably a well hiddn rootkit and we need to use special tools to get it.
We need a deeper look. Please go here....
Preparation Guide ,do steps 6 - 9.

Create a DDS log and post it in the new topic explained in step 9,which is here Virus, Trojan, Spyware, and Malware Removal Logs and not in this topic,thanks.
If Gmer won't run,skip it and move on.
Let me know if that went well.
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook

#11 arb02003

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Posted 14 September 2010 - 08:02 PM

Hello,

My sister was experiencing the same problems with her computer. I followed the instructions, but the problem persisted and I was unable to run MBAM in normal mode.

I was able to run MBAM in normal mode after I manually terminated the processess associated with the rogue security software. (Apparently this is a fake security alert that makes it seem as though there is a virus present. My sister has McAffe Anit-Virus software and the scans came back clean.)

In SAFE MODE:

1. Click CNTRL+ALT+DELETE
2. Click Task Manager
3. Click Processes
4. Find the desired processes to terminate. I deleted all rundll32.exe, wuauclt.exe, & sppsvc.exe files plus any file that had random alpha characters.
5. Select the process and click end process.


Once the processes were manually terminated, I still had to fix the internet. I received an error message to the effect that IE was trying to connect to a proxy.

1. Select tools from the menu bar
2. Select internet options
3. Select the "connections" tab
4. Select the "LAN Settings" button at the bottom
5. Uncheck the box to use a proxy server for connections

After doing this I was able to connect to the internet and run MBAM in normal mode.

The computer is working just fine now.

Thank you for the information.

Edited by arb02003, 14 September 2010 - 08:05 PM.


#12 Pandy

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Posted 19 September 2010 - 03:13 PM

Hello,

Now that you have posted a log here: http://www.bleepingcomputer.com/forums/topic348205.html you should NOT make further changes to your computer (install/uninstall programs, use special fix tools, delete files, edit the registry, etc) unless advised by a MRT Team member, nor should you ask for help elsewhere. Doing so can result in system changes which may not show in the log you already posted. Further, any modifications you make on your own may cause confusion for the helper assisting you and could complicate the malware removal process which would extend the time it takes to clean your computer.

From this point on the MRT Team should be the only members that you take advice from, until they have verified your log as clean.

Please be patient. It may take a while to get a response because the MRT Team members are EXTREMELY busy working logs posted before yours. They are volunteers who will help you out as soon as possible. Once you have made your post and are waiting, please DO NOT make another reply until it has been responded to by a member of the MRT Team. Generally the staff checks the forum for postings that have 0 replies as this makes it easier for them to identify those who have not been helped. If you post another response there will be 1 reply. A team member, looking for a new log to work may assume another MRT Team member is already assisting you and not open the thread to respond.

Please be patient. It may take several days to get a response but your log will be reviewed and answered as soon as possible. I advise checking your topic once a day for responses as the e-mail notification system is unreliable.

To avoid confusion, I am closing this topic. Good luck with your log.

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