Solved nslookup.exe/svchost.exe using 50% cpu usage

xVelns

New Member
Joined
Jul 24, 2018
Messages
6
OS
Windows 10
Antivirus
Avast
#1
Hello.
I accidentally installed a malware in to my PC. It was opening random websites when clicking anywhere on a page and closing within 1~2 seconds(history is not registering it).
I'm not able to open any Anti-malware programs and also website(including this) until I "end task" it. As soon as its closed I'm able to use this and any other anti-malware programs.
 
Operating System
Windows 10
Are you using a 32-bit or 64-bit operating system?
64-bit (x64)
Infection date and initial symptoms
20.07.2018~22.07.2018.
High CPU usage on svchost afterwards nslookup.
Wasn't able to open any malware related website or program.
Current issues and symptoms
Only(!!!) nslookup high CPU usage and after closing the 50%(cpu) nslookup the other one doesn't allow me to open any malware related programs or websites.
Steps taken in order to remove the infection
Tried: Rkill, Malwarebytes, SUPERAntiSpyware, giving myself perms and removing the svchost from Syswow64.
Also reset Google Chrome, disabled all extensions.
Logs added to Help Request
FRST.txt, Addition.txt

Attachments

Last edited:

TwinHeadedEagle

Removal Expert
MalwareTips Staff
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Messages
22,277
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#2
Hello,



Scan with Malwarebytes' Anti-Malware

Please download Malwarebytes Anti-Malware and save it to your desktop.
  • Install the progam.
  • Click the Scan tab, choose Threat Scan is checked and click Start Scan.
  • If threats are detected, click the Quarantine Selected button. You will now be prompted to reboot. Click Yes.
  • Upon completion of the scan (or after the reboot), click the Reports tab.
  • Double-click the Scan Log.
  • At the bottom click Export and choose Text file.
Save the file to your desktop and include its content in your next reply.
 
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xVelns

New Member
Joined
Jul 24, 2018
Messages
6
OS
Windows 10
Antivirus
Avast
#3
Thank you for getting back to me.

This is the report of the Scan.
The CPU usage also seems to be normal and the nslookup.exe isn't showing up running in the Task Manager.
I assume that its resolved.

Please let me know if so.
Will be waiting on your reply.
 

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TwinHeadedEagle

Removal Expert
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#4
Why did you remove svchost.exe? That is a windows related file and can cause your computer unbootable.
 
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xVelns

New Member
Joined
Jul 24, 2018
Messages
6
OS
Windows 10
Antivirus
Avast
#5
It had the same issue with nslookup.exe high CPU usage. (50%) and it also was in the SysWOW64. Removed it and it solved the CPU issue but it went to nslookup.exe

So far I'm not having any issues with booting.
 

TwinHeadedEagle

Removal Expert
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#6
It seems your do not understand. svchost.exe is a legitimate file and should never be removed from computer because it can make your system unbootable.
 
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xVelns

New Member
Joined
Jul 24, 2018
Messages
6
OS
Windows 10
Antivirus
Avast
#7
I see. Is there anyway I can recover that file? If yes - Please do let me know, so that I could recover it. (if that includes not re-installing Windows)
 
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TwinHeadedEagle

Removal Expert
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#8
FRST search

Once again we shall use FRST for additional checks. Re-run FRST/FRST64 by double-clicking:
  • Copy svchost.exe into the Search: field in FRST then click the Search Files button.
  • FRST will search your computer for files and when finished it will produce a log Search.txt in the same directory the tool is run.
  • Please attach it to your reply.
 

xVelns

New Member
Joined
Jul 24, 2018
Messages
6
OS
Windows 10
Antivirus
Avast
#9
Thank you for getting back to me.
I have attached the requested file.

Waiting on your reply. : )
 

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TwinHeadedEagle

Removal Expert
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#10
Fix with Farbar Recovery Scan Tool

This fix was created for this user for use on that particular machine.

Running it on another one may cause damage and render the system unstable.

Download attached fixlist.txt file and save it to the Desktop:

Both files, FRST and fixlist.txt have to be in the same location or the fix will not work!

  • Right-click on
    icon and select
    Run as Administrator to start the tool.
    (XP users click run after receipt of Windows Security Warning - Open File).
  • Press the Fix button just once and wait.
  • If for some reason the tool needs a restart, please make sure you let the system restart normally. After that let the tool complete its run.
  • When finishes FRST will generate a log on the Desktop, called Fixlog.txt.

Please attach it to your reply.



Scan with Farbar Recovery Scan Tool

Please re-run Farbar Recovery Scan Tool to give me a fresh look at your system.
  • Right-click on
    icon and select
    Run as Administrator to start the tool.
    (XP users click run after receipt of Windows Security Warning - Open File).
  • Make sure that Addition.txt option is checked.


  • Press Scan button and wait.
  • The tool will produce two logfiles on your desktop: FRST.txt and Addition.txt.
Please attach report into your next reply.
 

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xVelns

New Member
Joined
Jul 24, 2018
Messages
6
OS
Windows 10
Antivirus
Avast
#11
As it seems, everything went okay.
Here are all three necessary and requested files.
Thank you for you assistance.

Will be waiting on your reply.
Have a nice day!
 

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TwinHeadedEagle

Removal Expert
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#12
Very good. You're good to go now :) From now on never blindly believe in removal guides, better ask for help if you're unsure.
 
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