I found the following method for cleaning out the malware causing our problem with Safari. It worked perfectly for me. My 2012 mini is now clean! Here's a link to the page:
http://whatquestions.com/macbook-pro/299581-How-to-delete-Flashmail-adware-troja n-from-SwissFist#more-299581
And the following is the method used:
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mrlprl
Oct 15, 2015 6:50 PM
Re: what is Swiftfist in applications? in response to bryanfromdunedin
Yes, a real nuisance. A bunch of malware installed somehow, and I had to do some serious fiddling to get rid of it. Crossrider was part of it, along with flashmail (?) and MacKeeper, so check for these, too. Annoying and intrusive.
How to delete Flashmail adware trojan from SwissFist
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Currently ClamXav is designed to prevent adware from taking hold in the first place rather than focussing on removal, but we’re currently working on a solution for that and hope to have it available relatively soon.
In the meantime, I’ve included some manual removal instructions.
You may wish to print out these instructions before you get started.
Copy the following line
~/Library/LaunchAgents
In the Desktop/Finder, select the Go menu at the top of the screen and choose “Go to Folder…”
Press command-V to paste in the line you just copied. Press return and a folder named “LaunchAgents” will open.
Inside the folder you just opened, you should find some files with a name like
Swissfist.AppRemoval.plist
Swissfist.download.plist
Swissfist.ltvbit.plist
Swissfist.update.plist
com.WebShoppers.agent.plist
Drag all the files to the trash and empty the trash. Restart your computer.
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It’s vital that you restart your computer after deleting the files.
Copy the following line:
~/Library/Application Support
Again, in the Desktop/Finder, select the Go menu at the top of the screen and choose “Go to Folder…”
Press command-V to paste in the line you just copied. Press return and a folder named “Application Support” will open.
Drag Swissfist to the trash.
Don’t move the Application Support folder or anything else you find in there.
Go back to the Go menu and select Applications. Again, drag Swissfist to the trash as well. If you can’t because the system says the application is still running, select “Force Quit” from the Apple Menu and force quit the application in question, then try deleting it again.
Restart your computer again.
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Now, holding down the SHIFT key (bottom left of your keyboard, just above the ctrl or fn key) launch Safari. Go to the Safari menu -> Preferences -> Extensions and remove SwissFist (and possibly one called Ultimate something), or any that you don’t recognise.
Go to the Search tab in Safari Preferences and reselect your desired search engine (in some versions of Safari this may be in the General tab). Do the same to reset your Home Page.
Do the same thing in Firefox or Chrome.
•••• {Note: I also found a WebShopper app in Applications>Utilities folder that had to be removed.} ••••
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