Hi Kevin
OK, I ran FRST64, and at the end it asked me to restart the computer so I did. I attach Fixlog.txt
I ran Zemana, and rebooted afterward as it asked me to. I attach the log Zemana 2016.08.10 ...txt
I ran AdwCleaner and I attach the log AdwCleaner[C1].txt
I ran Sophos. I accidentally closed it before cleaning so I ran it again and you will see both scans in the attached log SophosVirusRemovalTool-2.log. But Sophos said it could clean only 16 of the 17 threats it found, so at Sophos's suggestion I submiited the log via its submit button.
Outcome: Youndoo seems to be cleared from all three of the browsers, Chrome, Firefox, and IE, that I use (in that definite order of preference). I didn't check each time but I think it was Zemana that got rid of it.
Question: I understand that it isn't wise to be running more than one virus protector at a time. I'm running Win 7 Enterprise because it's our organisation's machine and McAfee is our standard virus scanner that I can't remove. So should I now remove all of Malwarebytes, Rkill, Farbar, Zemana, AdwCleaner and Sophos? I'm of course nor sure which of these are running in the background (MacAfee, MWB and Zemana I think) and which are only run on demand. I already deleted SuperAntiSpyware that I'd tried before my initial posting.
Many thanks indeed
Des (DJD)
Fixlog.txt
Zemana 2016.08.10-13.26.58-i0-t92-d8.txt
AdwCleaner[C1].txt
SophosVirusRemovalTool-2.log