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Windows 7: Program using 100% CPU. Cannot get rid of it. No virus detected.

27 Oct 2013   #1

Windows 7 home premium 64bit
Program using 100% CPU. Cannot get rid of it. No virus detected.

My computer has been very slow and sometimes unresponsive. I opened my task manager and found several files (3) called soedech.exe running and using up 100% of the CPU and physical memory. I tried to end process on all of them and they stopped running for about 10 seconds then started again. I opened file location and it is in a folder titled "ynqaxep" in app data>roaming. I tried to delete the file but I can't because it says it's in use and/or currently running. So I quickly stopped the processes and deleted the file, it deleted, but came right back. I ran spybot and malwarebytes. Malwarebytes detected several Trojans, fixed them and restarted but soedech.exe was still there after reboot. Ran malware again and it found no threats. I've tried googling the file name and came up with nothing. Any help or suggestions? speak slowly and use small words, I'm not completely computer illiterate, but not a computer nerd either!!

My System SpecsSystem Spec

27 Oct 2013   #2

x64 (6.3.9600) Win8.1 Pro & soon dual boot x64 (6.1.7601) Win7_SP1 HomePrem

There are nine scanners referenced in this guide. Follow the instructions and run them in the order listed. You should run all 9 - it takes a lot of time, but the procedure is thorough.

How to easily clean an infected computer (Malware Removal Guide)
My System SpecsSystem Spec
27 Oct 2013   #3
Microsoft MVP

Windows 7 Ultimate 32bit SP1

Scan your machine with ESET OnlineScan
  1. Hold down Control and click on the following link to open ESET OnlineScan in a new window.
    ESET OnlineScan
  2. Click the button.
  3. For alternate browsers only: (Microsoft Internet Explorer users can skip these steps)
    1. Click on to download the ESET Smart Installer. Save it to your desktop.
    2. Double click on the icon on your desktop.
  4. Check
  5. Click the button.
  6. Accept any security warnings from your browser.
  7. Check
  8. Push the Start button.
  9. ESET will then download updates for itself, install itself, and begin scanning your computer. Please be patient as this can take some time.
  10. When the scan completes, push
  11. Push , and save the file to your desktop using a unique name, such as ESETScan. Include the contents of this report in your next reply.
  12. Push the button.
  13. Push
My System SpecsSystem Spec

27 Oct 2013   #4
Microsoft MVP


Establish a Clean Boot with only your AV - a lightweight solution like Microsoft Security Essentials - starting with Windows, after disinfecting as Jacee says then run SFC /SCANNOW Command to check for system file damage, complete the other Troubleshooting Steps for Windows 7.

In particular after infection always check your browser Add-On's to make sure only Flash is enabled. Disable the others and uninstall them in Control Panel. Then run to root them out of registry keys where they hide to avoid uninstall.
My System SpecsSystem Spec
30 Oct 2013   #5

Windows 7 home premium 64bit

I ended up running ESET. The free online scan detected a bunch of Trojans but did not get rid of them. So I downloaded the free trial and it worked like a charm! It found 101 infected files that spybot and malwarebytes did not find. Thank you all for the help.
My System SpecsSystem Spec

 Program using 100% CPU. Cannot get rid of it. No virus detected.

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