Internet connection has become anormally slow

[Piqferma]

Good afternoon, lately my internet connection started being really slow so I thought it could be caused by a malware, then I decided to install and run Malwarebytes on my PC since Windows Defender didn't help me at all. This problem only occurs temporally, then my connection works normally for a few hours, so I don't think it's about hardware.

Malwarebytes found many threats which I've already deleted, but I'll post its scan log anyway. It solved an issue that made the Google website be slow, but my internet is still failing a lot. Of course, I've been talking to my internet provider company, but they found no issues, and my speed should be 300 Mb/s as it's shown by the speed tests but it's clearly not. Furthermore this is not happening to any other devices connected via Wi-Fi.

At this point I'm totally lost, so I'd be grateful if you could help me. Thank you very much.

(FRST, Addition and Malwarebytes logs are attached)

FRST.txt

Addition.txt

malwarebytesLog.txt

[Malwarebytes]

***This is an automated reply***

Hi,

Thanks for posting in the Malware Removal for Windows Help forum. Being infected is not fun and can be very frustrating to resolve, but don't worry because we have a team of experts here help you!!

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First, if you haven't done so, please run a Threat Scan with the latest version of Malwarebytes. This may resolve your malware infection issue without the need for additional support. Click "Reveal Hidden Contents" below for details:

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If you do not have Malwarebytes, please download it here and install. Be sure to post back the log as shown below.

1. Open Malwarebytes for Windows
2. To the left, click Scan > Scan Types.
   
3. Select Threat Scan. Threat Scan is the most thorough and recommended scan method available.
   
4. Click Start Scan

Next, if you're still experiencing issues after running Malwarebytes, then technical logs will be required to assist you. Click "Reveal Hidden Contents" below and follow the instructions to run the Farbar Recovery Scan Tool:

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Please download the Farbar Recovery Scan Tool here and save it to your desktop. Note: You need to run the version compatible with your system. You can check here if you're not sure if your computer is 32-bit or 64-bit

1. Double-click to run it. When the tool opens click Yes to the disclaimer.
2. Press the Scan button.
   
3. It will make a log (FRST.txt) in the same directory the tool is run. Please copy and paste it to your reply.
4. The first time the tool is run, it also makes another log (Addition.txt). If you've run it before it may not and you may need to select it manually.

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[kevinf80]

Hell Piqferma and welcome to Malwarebytes, Continue with the following: Download attached fixlist.txt file (end of reply) and save it to the Desktop, or the folder you saved FRST into. "Do not open that file when running FRST fix" NOTE. It's important that both FRST and fixlist.txt are in the same location or the fix will not work. Open FRST and press the Fix button just once and wait. The tool will make a log on the Desktop (Fixlog.txt) or the folder it was ran from. Please post it to your reply. Next, Open Malwarebytes Anti-Malware.   On the Settings tab > Protection Scroll to and make sure the following are selected: Scan for Rootkits Scan within Archives   Scroll further to Potential Threat Protection make sure the following are set as follows: Potentially Unwanted Programs (PUP`s) set as :- Always detect PUP`s (recommended) Potentially Unwanted Modifications (PUM`s) set as :- Alwaysdetect PUM`s (recommended)   Click on the Scan make sure Threat Scan is selected, A Threat Scan will begin. When the scan is complete if anything is found make sure that the first checkbox at the top is checked (that will automatically check all detected items), then click on the Quarantine Selected Tab If asked to restart your computer to complete the removal, please do so When complete click on Export Summary after deletion (bottom-left corner) and select Copy to Clipboard. Wait for the prompt to restart the computer to appear, then click on Yes. After the restart once you are back at your desktop, open MBAM once more to retrieve the log. To get the log from Malwarebytes do the following:   Click on the Reports tab > from main interface. Double click on the Scan log which shows the Date and time of the scan just performed. Click Export > From export you have two options: Copy to Clipboard - if seleted right click to your reply and select "Paste" log will be pasted to your reply Text file (*.txt) - if selected you will have to name the file and save to a place of choice, recommend "Desktop" then attach to reply   Use "Copy to Clipboard, then Right click to your reply > select "Paste" that will copy the log to your reply… Next, Download AdwCleaner by Malwarebytes onto your Desktop. Or from this Mirror   Right-click on AdwCleaner.exe and select Run as Administrator (for Windows Vista, 7, 8, 8.1 and 10 users) Accept the EULA (I accept), then click on Scan Let the scan complete. Once it's done, make sure that every item listed in the different tabs is checked and click on the Clean button. This will kill all the active processes Once the cleaning process is complete, AdwCleaner will ask to restart your computer, do it After the restart, a log will open when logging in. Please copy/paste the content of that log in your next reply Next, Download Microsoft's " Malicious Software Removal Tool" and save direct to the desktop Ensure to get the correct version for your system.... https://www.microsoft.com/en-gb/download/malicious-software-removal-tool-details.aspx Right click on the Tool, select “Run as Administrator” the tool will expand to the options Window In the "Scan Type" window, select Quick Scan Perform a scan and Click Finish when the scan is done. Retrieve the MSRT log as follows, and post it in your next reply: 1) Select the Windows key and R key together to open the "Run" function 2) Type or Copy/Paste the following command to the "Run Line" and Press Enter: notepad c:\windows\debug\mrt.log The log will include log details for each time MSRT has run, we only need the most recent log by date and time.... Let me see those logs in your reply, also tell me if there are any remaining issues or concerns... Thank you, Kevin..

fixlist.txt

[Piqferma]

Hi Kevin, thank you for your fast response, I think it worked to me. Right after executing FRST and restarting my PC the problem seemed to be solved, and when I scanned again with Malwarebytes it didn't find any threat.

Thank you very much for your help.

Fixlog.txt

[kevinf80]

Yes you had DNS hijacker, we shift that with FRST. Did you run AdwCleaner and MSRT, can I see those logs...?

[Piqferma]

I didn't run them, should I do it? If so, I'll do it and post the results.

[kevinf80]

Yes please, those are normal scans to run after DNS hijacker to make sure your system is clean...

Thank you,

Kevin...

[Piqferma]

Alright, these are the logs. You were right, AdwCleaner removed some more malicious files. Thank you again for helping me.

AdwCleaner[C00].txt

mrt.log

[kevinf80]

Thanks for those log, yes is always best to make sure we have your system totally clean. We can clean up now....

Right click on FRST here: C:\Users\Usuario\Downloads\FRST64.exe and rename to uninstall.exe when complete right click on uninstall.exe and select "Run as Administrator" That action will remove FRST and all created files and folders... Next, Read the following links to fully understand PC Security and Best Practices, you may find them useful.... Answers to Common Security Questions and best Practices Do I need a Registry Cleaner? Take care and surf safe Kevin...

[kevinf80]

Glad we could help.

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Thanks