Jump to content


 


Register a free account to unlock additional features at BleepingComputer.com
Welcome to BleepingComputer, a free community where people like yourself come together to discuss and learn how to use their computers. Using the site is easy and fun. As a guest, you can browse and view the various discussions in the forums, but can not create a new topic or reply to an existing one unless you are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site.


Click here to Register a free account now! or read our Welcome Guide to learn how to use this site.

Photo

Firefox.exe in %LocalAppData%


  • Please log in to reply
1 reply to this topic

#1 Daniel Schoonover

Daniel Schoonover

  • Members
  • 1 posts
  • OFFLINE
  •  
  • Local time:04:56 AM

Posted 04 November 2013 - 12:40 PM

I am the IT admin for a law office. After I heard about the CryptoLocker virus on Security Now last week, I started looking at ways to protect my users from infection. I implemented group policy to prevent any executables from AppData, after which, one user reported she was getting an error when running internet shortcuts. Her default browser had been set to %LocalAppData%\Firefox\firefox.exe instead of the one in Program Files (x86). Is there any legit reason for it to be installed in the user profile, or is this something malicious? I am leaning toward wiping the machine anyway, as this user seems to get infected more than most.



BC AdBot (Login to Remove)

 


#2 quietman7

quietman7

    Bleepin' Janitor


  • Global Moderator
  • 51,595 posts
  • ONLINE
  •  
  • Gender:Male
  • Location:Virginia, USA
  • Local time:06:56 AM

Posted 04 November 2013 - 04:28 PM

I encountered a similar issue while attempting to install Firefox's v25 release. Firefox attempted to install and run the setup file from that folder and it was blocked by policies set in place when using CryptoPrevent.

 

Programs should not be running from a user profile as they are meant to hold data, preferences, settings, and configuration files. Unfortunately some legitimate programs are still using this folder despite many security tools targeting that location. I had to whitelist the file in order to install it.


.
.
Windows Insider MVP 2017-2018
Microsoft MVP Reconnect 2016
Microsoft MVP Consumer Security 2007-2015 kO7xOZh.gif
Member of UNITE, Unified Network of Instructors and Trusted Eliminators

If I have been helpful & you'd like to consider a donation, click 38WxTfO.gif




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users