[Distorted Gateway Logo] Please Download Latest Version of Flash Player

Question

I have been told that some type of malware/phishing software/virus causes the pop-up window shown below to appear after a few minutes of inactivity and that if any poor soul were to hit the OK button, the malware package will be delivered.
Avast, Malwarebytes, Advanced SystemCare, and Windows Defender have not been able to identify the culprit on my PC.
Does anyone have any suggestions for me?
Thanks!

Answer 1

I found the Gateway Screensaver to be the source of the message. Either uninstall the Gateway Screensaver or install the latest Flash Player from Adobe. I chose to uninstall the Gateway Screensaver. There is currently an unpatched vulnerability in Flash. Flash has had at least three such unpatched vulnerabilities so far this year.
There are a few variations of Flash Player; ActiveX, plugin, and projector. ActiveX and plugin include an autoupdater, projector does not. The official download for ActiveX and plugin can be found at https://get.adobe.com/flashplayer. The page will autodetect your OS and Browser to offer the appropriate variation for your browser and version for your OS. The Gateway Screensaver probably needs either the ActiveX or standalone. So visit the page with Internet Explorer (uncheck all the optional components) to install it, if the message goes away done.
If you still have the message you need the projector variation (formerly know as standalone player) which can be found at http://www.adobe.com/support/flashplayer/downloads.html where there are alot of links. Currently "Download the Flash Player projector" is the link you want. The downloaded file is the player itself not an installer. You will have to associate the Flash file type .swf with the flashplayer projector. I suggest copying the flashplayer file you downloaded to a location like a folder at c:/flashplayer/ with a name of flashplayer.exe to permit updating without having to reassociate the file type .swf for every new version. Associate the filetype by searching for .swf from the start button, click on one of the .swf files, choose browse when the open with window opens, find the flashplayer folder and the flashplayer.exe  check the always use box then click open then click ok. Very important, you will have to update this file manually, there is no automatic updater.