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Strange files suddenly appearing on my desktop

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Old 01-15-2016, 09:36 PM   #1
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Hi all,

After what seemed like a mild virus attack - a reputed e-commerce site showed a pop-up spamming me with ads etc. and my hotmail and yahoomail accounts (I use mostly on my Samsung) had been compromised - I had installed Sophos a couple of weeks ago. My computer (Retina, early 2015 MBP, 13in) is running fine, but I see some strange activity again.

I am uploading this screenshot of these files that have suddenly come up from somewhere. e.g. the first one is named -

BHpWRh9SPys&fs=1&color1=0x3a3a3a&color2=0x999999

dxK52-jPeO8&fs=1&color1=0x3a3a3a&color2=0x999999

l0HWWGmU9R4&fs=1&color1=0x3a3a3a&color2=0x999999

pDYyiKhnZVw&fs=1&color1=0x3a3a3a&color2=0x999999

rRMdpfJVu4c&fs=1&color1=0x3a3a3a&color2=0x999999

I normally restart my laptop only once a week or so, and I this had come up soon after I restarted it. Also, I had just put in my ext HDD so perhaps this has something to do with that. I had also just plugged in the camera card into the reader which I took out right away. The Sophos scan does not show any threats.

Should I just delete these files and forget about it?

I have never used antivirus for Mac but at this point I just feel the need for one. I selected Sophos reading website recos, but it would be nice if members suggested which ones work best on the Mac (and are free of charge).

Thanks!
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Old 01-15-2016, 09:41 PM   #2
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I would use this tool to scan for malware: https://www.malwarebytes.org/mac-download/

I have not seen files like that... but I wouldnt' think any Malware or Virus would drop files on your desktop. Their objective is to go un-noticed and putting files on the desktop does not help them stay hidden in the shadows.
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Old 01-15-2016, 10:28 PM   #3
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Thanks I'll also try this one out.

Meanwhile, I also checked for disk permissions and was rather surprised to get the following results (see attachment).

Something I should worry about? Or should I just repair the disk?

Thanks
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Old 01-16-2016, 08:36 AM   #4
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It is pretty normal to see Permissions that aren't what they should be, I am surprised the list is that small to be honest. They get put out of line by programs poorly coded etc...

You can go ahead and repair them.
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