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Something "unknown" is using up my drive c: space

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#1 Mary3


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Posted 26 March 2015 - 01:18 PM

Running  Windows 7  64 bit


Compressing drive c: to save space

453 gig drive

59.6 gig free


I do have some video files that I am in the process of deleting, but something is using up my drive space.  Yesterday I had 68.7 gig free.  I don’t have anything besides the videos that should be using up that much space.


I ran WinDirStat and under drive c: before Users is “<Unknown>  275.1 gig with no other information.  Can anyone tell me what that is?


Thank you in advance for your help!  

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#2 boopme


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Posted 26 March 2015 - 02:03 PM

Hi mary, This could be malware. I moved this to the Am I Infected forum to run some scans.

  • Please download MiniToolBox, save it to your desktop and run it.
  • Checkmark the following checkboxes:
    • Flush DNS
    • Report IE Proxy Settings
    • Reset IE Proxy Settings
    • Report FF Proxy Settings
    • Reset FF Proxy Settings
    • List content of Hosts
    • List IP configuration
    • List Winsock Entries
    • List last 10 Event Viewer log
    • List Installed Programs
    • List Users, Partitions and Memory size.
  • Click Go and post the result (Result.txt). A copy of Result.txt will be saved in the same directory the tool is run. Note: When using "Reset FF Proxy Settings" option Firefox should be closed.
  • Download TDSSKiller and save it to your desktop.
  • Extract (unzip) its contents to your desktop.
  • Open the TDSSKiller folder and doubleclick on TDSSKiller.exe to run the application, then on Start Scan.
  • If an infected file is detected, the default action will be Cure, click on Continue.
  • If a suspicious file is detected, the default action will be Skip, click on Continue.
  • It may ask you to reboot the computer to complete the process. Click on Reboot Now.
  • If no reboot is required, click on Report. A log file should appear. Please copy and paste the contents of that file here.
  • If a reboot is required, the report can also be found in your root directory (usually C:\ folder) in the form of TDSSKiller_xxxx_log.txt. Please copy and paste the contents of that file here.
  • Please download AdwCleaner by Xplode and save to your Desktop.
  • Double click on AdwCleaner.exe to run the tool. Vista/Windows 7/8 users right-click and select Run As Administrator
  • Click on the Scan button.
  • AdwCleaner will begin...be patient as the scan may take some time to complete.
  • After the scan has finished, click on the Report button...a logfile (AdwCleaner[R0].txt) will open in Notepad for review.
  • The contents of the log file may be confusing. Unless you see a program name that you know should not be removed, don't worry about it. If you see an entry you want to keep, let me know about it.
  • Copy and paste the contents of that logfile in your next reply.
  • A copy of all logfiles are saved in the C:\AdwCleaner folder which was created when running the tool.
lv0mVRW.pngJunkware Removal Tool
  • Please download Junkware Removal Tool to your desktop.
  • Shut down your protection software now to avoid potential conflicts.
  • Run the tool by double-clicking it. If you are using Windows Vista, 7, or 8; instead of double-clicking, right-mouse click JRT.exe and select "Run as Administrator".
  • The tool will open and start scanning your system.
  • Please be patient as this can take a while to complete depending on your system's specifications.
  • On completion, a log (JRT.txt) is saved to your desktop and will automatically open.
  • Post the contents of JRT.txt into your next message.
cvMlKv6.pngESET Online Scanner
  • Hold down Control and click on this link to open ESET Online Scanner in a new window.
  • Click the esetonlinebtn.png button.
  • For alternate browsers only: (Microsoft Internet Explorer users can skip these steps)
  • Click on esetsmartinstaller_enu.exe to download the ESET Smart Installer. Save it to your desktop.
  • Double click on the esetsmartinstaller_enu.png icon on your desktop.
  • Check "YES, I accept the Terms of Use."
  • Click the Start button.
  • Accept any security warnings from your browser.
  • Under scan settings, check "Scan Archives" and "Remove found threats"
  • Click Advanced settings and select the following:
    • Scan potentially unwanted applications
    • Scan for potentially unsafe applications
    • Enable Anti-Stealth technology
  • ESET will then download updates for itself, install itself, and begin scanning your computer. Please be patient as this can take some time.
  • When the scan completes, click List Threats
  • Click Export, and save the file to your desktop using a unique name, such as ESETScan. Include the contents of this report in your next reply.
  • Click the Back button.
  • Click the Finish button.
  • NOTE: Sometimes if ESET finds no infections it will not create a log.

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