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by Expert (16.4k points)
After installing a dubious youtube downloader my chrome browser is throwing third party adds at me. I tried to remove the software I installed and remove any extensions I do not know but still no joy. there is however an extension I can not manipulate as it is grayed out (GVU Technologies Addon 1.23.7). I don't know what it is doing there and whether it is related to ad.yieldmanager.com. The little search I have done on the net says it is malicious but then how to remove it.

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4 Answers

+1 vote
by Guru (88.1k points)
Spybot search and destroy used to do the trick in the old days l used to have Windows:

by Expert (16.4k points)
Thanks Macd. I'm giving that one a try and will feed back on the results
by Expert (16.4k points)
After downloading and updating this did not work
+1 vote
by Expert (19.6k points)
Assuming you are on windows 7, you would need to reset your chrome to default....by doing the the following:
Close all running instances of Google Chrome.
Go to the installation folder of Google Chrome:

C:\Users\UserName\AppData\Local\Google\Chrome\Application\User Data.

In the User Data folder, look for a file named as "Default" and rename it.
Launch Google Chrome and a new "Default " file will be created. All the extension, add-ons, history and bookmarks will be wiped and you can start afresh
by Expert (16.4k points)
Using win7, I have default folder not file. I renamed this and restarted my chrome but still no joy. Trying Shepherd's method next.
+1 vote
by Expert (17.4k points)
If your bandwidth is bad you can remove it manually

Open Task Manager to stop processes that have adyieldmanager etc

Remove associated registry settings:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Toolbar
HKEY_CURRENT_USER\software\microsoft\internet explorer\toolbar\webbrowser
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run “.exe”
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings “WarnonBadCertRecving” = ’0
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop “NoChangingWallPaper” = ’1
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Attachments “SaveZoneInformation” = ’1
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System “DisableTaskMgr” = ’1
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Download “CheckExeSignatures” = ‘no’
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main “Use FormSuggest” = ‘yes’
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced “ShowSuperHidden” = 0

Delete Ad.yieldmanager.com infected files:
%Profile%\Local Settings\Temp\

System restore:
Lazy man approach is to run a system restore on your computer to an earlier state.
On Win XP Press Windows Key & R at the same tyme and type restore and press enter or click ok. Open rstrui.exe and select an ealier restore point.
Click Start menu > All Programs > System Tools > System Restore
Start menu > Backup and Recover > Recover System
boot from Win7 DVD & press F8 and go to advanced options then select system restore etc etc i am sure you know the rest man. cheers
0 votes
by Expert (16.4k points)
Thanks guys for all your tips. Most helped to clean my registry but still did not get rid of the malware. The trick was not to look for ad.yieldmanager but instead GVU Technologies. start in safe mode then uninstall from within program folder while chrome is not running. No more ads in my chrome browser. Also discovered that the online chrome back up is awesome.
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