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Extremely slow internet speed after malicious websites opened in new tabs

sadsad
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sadsad

sadsad

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Hi, I am in need of help! Recently, I was watching drama from a certain webpage and malicious websites appeared(opened in new tab) after clicking on the video player. Everything was fine until two days ago, I realised that the internet speed have decreased tremendously (there was no redirecting of webpages). I did the internet speed test on google and the internet speed is 0.08mb/s (This is for my desktop using internet cable). I did a similar test on my laptop running on wifi and the internet speed is 65mb/s. I ran malwarebytes scan and nothing malicious/harmful was found. I think there is spyware or DNS hijacker in my PC. An example to note, browsing to youtube.com required at least 20minutes to load. PLEASE HELP! Just to note, i did have anti-virus installed.

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kevinf80

kevinf80

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Hello sadsad and welcome to malwarebytes....

Continue with the following:

If you do not have Malwarebytes installed do the following:

Download Malwarebytes from the following link:

https://www.malwarebytes.com/mwb-download/thankyou/

or,

https://downloads.malwarebytes.com/file/mb4_offline

Double click on the installer and follow the prompts. If necessary select the Blue Help tab for video instructions....

When the install completes or Malwarebytes is already installed do the following:

Open Malwarebytes, select > "settings" > "security tab"

Scroll down to "Scan Options" ensure Scan for Rootkits and Scan within Archives are both on....

Go back to "DashBoard" select the Blue "Scan Now" tab......

When the scan completes quarantine any found entries...

To get the log from Malwarebytes do the following:
 
  • Single click on the target sight above scanner window.
  • In the new window select Report
  • 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
    Export toTxt - if selected you will have to name the file and save to a place of choice, recommend "Desktop" then attach to reply

     
  • Please use "Export to Txt" then attach the log to your reply...


Next,

Download AdwCleaner by Malwarebytes onto your Desktop.

Or from this Mirror
 
  • Right-click on AdwCleaner.exe and select user posted imageRun 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 Quarantine 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 Farbar Recovery Scan Tool and save it to your desktop.

Alternative download option: http://www.techspot.com/downloads/6731-farbar-recovery-scan-tool.html

Note: You need to run the version compatible with your system (32 bit or 64 bit). If you are not sure which version applies to your system download both of them and try to run them. Only one of them will run on your system, that will be the right version.

If your security alerts to FRST either, accept the alert or turn your security off to allow FRST to run. It is not malicious or infected in any way...

Be aware FRST must be run from an account with Administrator status...
 
  • Double-click to run it. When the tool opens click Yes to disclaimer.(Windows 8/10 users will be prompted about Windows SmartScreen protection - click More information and Run.)
  • Make sure Addition.txt is checkmarked under "Optional scans"
    user posted image
     
  • Press Scan button to run the tool....
  • It will make a log (FRST.txt) in the same directory the tool is run. Please copy and paste it to your reply.
  • The tool will also make a log named (Addition.txt) Please attach that log to your reply.


Let me see those logs in your reply...

Thank you,

Kevin....
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sadsad

sadsad

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Hi.. the malwarebytes scan is taking very long as the first part is to check for updates, the internet speed is extremely low (it has been 52minutes but still checking for updates),  i am willing to be wait but for the worst scenario would it be ok for me to take the scan report from yesterday?

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kevinf80

kevinf80

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Hello sadsad,

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.

user posted image

Has anything changed on your PC issue..?

Thank you,

Kevin

fixlist.txt

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kevinf80

kevinf80

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Download and unzip DNSJumper to your Desktop, the tool is portable no installation necessary.

Tool can be downloaded here: http://www.sordum.org/downloads/?dns-jumper
 
  • Right click on Dnsjumper.exe and select "Run as Administrator" to start the tool, For XP just double click to run.
  • From the left hand pane select "Flush DNS"
  • From the main interface select the dropdown under "Choose a DNS Server"
  • From the list select either "Google Public DNS" or "Open DNS"
  • From the left hand pane select "Apply DNS"
When done re-boot your system, any change/impovement..?
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sadsad

sadsad

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Hi, 
I have disabled all startup services except the avast anti-virus cannot be disabled.. I tried to disable but i am unable to do so. I have rebooted and tried to browse youtube but the same issue remains. The internet speed remains the same. Should i uninstall the avast and try again?

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kevinf80

kevinf80

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Hello sadsad,

Yes PC is clear, logs are not showing any positive malware or infection. Lets run one more indepth scan to be 100% sure..

Download ESET Online Scanner and save it to your desktop.
  • Right-click on esetonlinescanner_enu.exe and select Run as Administrator.
  • When the tool opens, click Get Started.
  • Read and accept the license agreement.
  • At the Welcome to ESET Online Scanner window, click Get Started.
  • Select whether you would like to send anonymous data to ESET.
  • Note: if you see the "Welcome Back to ESET Online Scanner" screen, click Computer Scan > Full Scan.
  • Click on the Full Scan option.
  • Select Enable ESET to detect and remove potentially unwanted applications, then click Start scan.
  • ESET will now begin scanning your computer. This may take some time.
  • When the scan is finished and if threats have been detected, select Save scan log. Save it to your desktop as eset.txt. Click on Continue.
  • ESET Online Scanner may ask if you'd like to turn on the Periodic Scan feature. Click on Continue.
  • On the next screen, you can leave feedback about the program if you wish. Check the box for Delete application data on closing. If you left feedback, click Submit and continue. If not, Close without feedback.
  • Open the scan log on your desktop (eset.txt) and copy and paste its contents into your next reply.

Thanks,

Kevin..

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kevinf80

kevinf80

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Posted (edited)

Hiya sadsad,

That is very strange that a restart of the router fixed the problem, your laptop was using same router without a problem. At least you have the connection working correctly so yes please let me see ESET log when the scan completes..

Thank you,

Kevin

Edited by kevinf80
typo
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