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Inquiry about risks of infection


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Hello, 

I don't have a problem as much as a question about malware itself. I recently had a scan take place that identified a file as "Setup(1).Exe" in my downloads folder. The application quarantined it and I haven't seen anything since, but my concern isn't with that so as much as the nature of the cause of the infection itself. The previous evening, I had a scan take place at 7:07PM that was manual that yielded no results, and I went to bed a few hours afterwards. I did some basic internet browsing, though not to any sites I haven't been to in the past. The next morning, at 7:42 AM, the automatic scan discovered and quarantined the aforementioned "Setup(1).Exe" file in my downloads.  I had a few theories as to why this may have happened:

  • Malwarebytes was updated and a files that previously may have appeared benign were newly flagged as malicious 
  • The "Setup(1).Exe" file was not actually a setup file at all but rather the product of some malicious software or program that creates malware that ran overnight without my realizing
  • Though I have bluetooth disabled and have file sharing of every category disabled on my computer, some actor may have found some way to remotely download files to my computer without my consent

I apologize if any of these sound far-fetched, I simply want to make sure this doesn't happen again. I have already done a full system scan of every drive with the Malwarebytes Premium 4.4,10 application (including rootkits) and among 1,540,813 files, none raised a flag, and I had my computer entirely offline for the duration of the scan. 

If you could offer any insight on why this could have happened and how to avoid a similar event from occurring in the future, I would greatly appreciate it. I am very paranoid about viruses and it's entirely possible I am simply missing something extremely simple. Thanks for indulging me.

listofscans.png

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  • Root Admin

Hello @Cleric_of_Vecna

We would need to get the actual full logs in order to see what it found and did with it.

 

To begin, please do the following so that we may take a closer look at your installation for troubleshooting:

NOTE: The tools and the information obtained are safe and not harmful to your privacy or your computer, please allow the programs to run if blocked by your system.

  • Download the Malwarebytes Support Tool
  • In your Downloads folder, open the mb-support-x.x.x.xxx.exe file
  • In the User Account Control pop-up window, click Yes to continue the installation
  • Run the MBST Support Tool
  • In the left navigation pane of the Malwarebytes Support Tool, click Advanced
  • In the Advanced Options, click Gather Logs. A status diagram displays the tool is Getting logs from your machine
  • A zip file named mbst-grab-results.zip will be saved to your desktop, please upload that file on your next reply

Thank you

 

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  • Root Admin

Merry Christmas to you as well @Cleric_of_Vecna

image.png

 

 

 

  1. Recommend using a Password Manager for all websites, etc. that require a password. Never use the same password on more than one site.
    https://www.howtogeek.com/240255/password-managers-compared-lastpass-vs-keepass-vs-dashlane-vs-1password/
  2. Keep all software up to date - PatchMyPC - https://patchmypc.com/home-updater#download
  3. Keep your Operating System up to date and current at all times - https://support.microsoft.com/en-us/windows/windows-update-faq-8a903416-6f45-0718-f5c7-375e92dddeb2
  4. Install a content blocker for your browser. Malwarebytes Browser Guard (Free)
    Firefoxhttps://addons.mozilla.org/en-GB/firefox/addon/malwarebytes/  
    Chrome: https://chrome.google.com/webstore/detail/malwarebytes-browser-guar/ihcjicgdanjaechkgeegckofjjedodee 
  5. Further tips to help protect your computer data and improve your privacy: https://forums.malwarebytes.com/topic/258363-tips-to-help-protect-from-infection/ 

 

Further reading if you like to keep up on the malware threat scene: Malwarebytes Blog  https://blog.malwarebytes.com/

 

Thank you for using Malwarebytes

 

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