BleepingComputer.com: Windows c drive keeps decreasing

Hi,
i use windows 7 ultimate.
lately ive been noticing that my c drive free disk space keeps decreasing after every few minutes. and sometimes it increases too.
i first thought that it may be due to downloads so i deleted some unnecessary files but it keeps decreasing.
please help!!!!!!!!!

Hello, this is usually a malware. I moved this to the Am I Infected forum.

Next run MBAM (MalwareBytes):

Please download Malwarebytes Anti-Malware and save it to your desktop.

Download Link 1
Download Link 2

MBAM may "make changes to your registry" as part of its disinfection routine. If using other security programs that detect registry changes (ie Spybot's Teatimer), they may interfere or alert you. Temporarily disable such programs or permit them to allow the changes.

• Make sure you are connected to the Internet.
  
• Double-click on mbam-setup.exe to install the application.
  For instructions with screenshots, please refer to the How to use Malwarebytes' Anti-Malware Guide.
  
• When the installation begins, follow the prompts and do not make any changes to default settings.
  
• When installation has finished, make sure you leave both of these checked:
  • Update Malwarebytes' Anti-Malware
    
  • Launch Malwarebytes' Anti-Malware
  
  
• Then click Finish.

MBAM will automatically start and you will be asked to update the program before performing a scan.

• If an update is found, the program will automatically update itself. Press the OK button to close that box and continue.
  
• If you encounter any problems while downloading the definition updates, manually download them from here and just double-click on mbam-rules.exe to install.

On the Scanner tab:

• Make sure the "Perform Quick Scan" option is selected.
  
• Then click on the Scan button.
  
• If asked to select the drives to scan, leave all the drives selected and click on the Start Scan button.
  
• The scan will begin and "Scan in progress" will show at the top. It may take some time to complete so please be patient.
  
• When the scan is finished, a message box will say "The scan completed successfully. Click 'Show Results' to display all objects found".
  
• Click OK to close the message box and continue with the removal process.

Back at the main Scanner screen:

• Click on the Show Results button to see a list of any malware that was found.
  
• Make sure that everything is checked, and click Remove Selected.
  
• When removal is completed, a log report will open in Notepad.
  
• The log is automatically saved and can be viewed by clicking the Logs tab in MBAM.
  
• Copy and paste the contents of that report in your next reply. Be sure to post the complete log to include the top portion which shows MBAM's database version and your operating system.
  
• Exit MBAM when done.

Note: If MBAM encounters a file that is difficult to remove, you will be asked to reboot your computer so MBAM can proceed with the disinfection process. If asked to restart the computer, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware.

Troubleshoot Malwarebytes' Anti-Malware




Please download the TDSS Rootkit Removing Tool (TDSSKiller.exe) and save it to your Desktop. <-Important!!!
Be sure to download TDSSKiller.exe (v2.5.22.0) from Kaspersky's website and not TDSSKiller.zip which appears to be an older version 2.3.2.2 of the tool.

• Double-click on TDSSKiller.exe to run the tool for known TDSS variants.
  Vista/Windows 7 users right-click and select Run As Administrator.
  
• If TDSSKiller does not run, try renaming it.
  
• To do this, right-click on TDSSKiller.exe, select Rename and give it a random name with the .com file extension (i.e. 123abc.com). If you do not see the file extension, please refer to How to change the file extension.
  
• Click the Start Scan button.
  
• Do not use the computer during the scan
  
• If the scan completes with nothing found, click Close to exit.
  
• If malicious objects are found, they will show in the Scan results - Select action for found objects and offer three options.
  
• Ensure Cure (default) is selected, then click Continue > Reboot now to finish the cleaning process.
  
• A log file named TDSSKiller_version_date_time_log.txt (i.e. TDSSKiller.2.4.0.0_27.07.2010_09.o7.26_log.txt) will be created and saved to the root directory (usually Local Disk C:).
  
• Copy and paste the contents of that file in your next reply.

If TDSSKiller does not run, try renaming it. To do this, right-click on TDSSKiller.exe, select Rename and give it a random name with the .com file extension (i.e. 123abc.com). If you do not see the file extension, please refer to these[/color] instructions. [color=green]In some cases it may be necessary to redownload TDSSKiller and randomly rename it before downloading and saving to the computer.

Well, depends with how much your free space on your C drive decreases. It might simply be temporary files being constantly added/removed (due to web browser activity while you are surfing the net for example) that would decrease the free space in the matter of tens of MB. if the rate is quick and seems uncontrolled though, as advised - might be some kind of malware.

i did the mbam scan as you said...but when i opened the log file...it shows another language mostly consisting of signs and objects so should i paste that??

can you run the TDSS and this?

I'd like us to scan your machine with ESET OnlineScan

• Hold down Control and click on the following link to open ESET OnlineScan in a new window.
  ESET OnlineScan
  
• Click the button.
  
• For alternate browsers only: (Microsoft Internet Explorer users can skip these steps)
  • Click on to download the ESET Smart Installer. Save it to your desktop.
    
  • Double click on the icon on your desktop.
  
  
• Check
  
• Click the button.
  
• Accept any security warnings from your browser.
  
• Under scan settings, check and check 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, push
  
• Push , and save the file to your desktop using a unique name, such as ESETScan. Include the contents of this report in your next reply.
  
• Push the button.
  
• Push

NOTE: In some instances if no malware is found there will be no log produced.


1. Uninstall Malwarebytes' Anti-Malware using Add/Remove programs in the control panel.
2. Restart your computer (very important).
3. Download and run this utility. Mbam clean
4. It will ask to restart your computer (please allow it to).
5. After the computer restarts, install the latest version from here. http://www.malwarebytes.org/mbam-download.php
Note: You will need to reactivate the program using the license you were sent.
Note: If using Free version, ignore the part about putting in your license key and activating.
Launch the program and set the Protection and Registration.
Then go to the UPDATE tab if not done during installation and check for updates.
Restart the computer again and verify that MBAM is in the task tray and run a Quick Scan and post that log.

This post has been edited by boopme: 26 September 2011 - 01:07 PM

21:51:12.0026 5708 Detected object count: 1
21:51:12.0026 5708 Actual detected object count: 1
21:51:47.0184 5708 HKLM\SYSTEM\ControlSet001\services\sptd - will be deleted on reboot
21:51:47.0207 5708 HKLM\SYSTEM\ControlSet002\services\sptd - will be deleted on reboot
21:51:47.0253 5708 HKLM\SYSTEM\ControlSet003\services\sptd - will be deleted on reboot
21:51:47.0295 5708 F:\Windows\system32\Drivers\sptd.sys - will be deleted on reboot
21:51:47.0295 5708 sptd ( LockedFile.Multi.Generic ) - User select action: Delete
21:51:52.0732 4752 Deinitialize success
this was what tdss killer reported and i got it cured...then next time it scanned there was no threat! will post the eset scan in a few minutes

Excellet,I'll look back.

C:\Documents and Settings\Admin\My Documents\Downloads\SoftonicDownloader_for_microsoft-powerpoint-viewer.exe a variant of Win32/SoftonicDownloader.A application cleaned by deleting - quarantined
C:\Haris\Angry Birds Cracked Final Complete Pack-SenseMan\Angry.Birds.v1.6.2.cracked.READ.NFO-THETA\Angry.Birds.v1.6.2.cracked.READ.NFO-THETA\Patch\Patch.exe a variant of Win32/HackTool.Patcher.D application cleaned by deleting - quarantined
C:\Haris\Angry Birds Cracked Final Complete Pack-SenseMan\other\Update 4-Trainers\Trainer_pack_senseman\Angry birds Rio\angry_birds_rio_plus2_trainer.exe a variant of Win32/HackTool.CheatEngine.AB application cleaned by deleting - quarantined
C:\Haris\Angry Birds Cracked Final Complete Pack-SenseMan\other\Update 4-Trainers\Trainer_pack_senseman\Angry birds\angry_birds_plus2_multi_trainer.exe a variant of Win32/HackTool.CheatEngine.AB application cleaned by deleting - quarantined
D:\Unreal Tournament 3\EXTRAS\Trainer+8\Unreal Tournament 3 Trainer.exe a variant of Win32/GameHack.F application cleaned by deleting - quarantined


here are the results from eset nod 32
they said that they found five threats which were al variants of win 32 and something ike that....and then cured it too...so aM i infected?

It would appear you are clean for now. Looks like the Angry Birds was a Cracked version and infected the machine.

Angry Birds Cracked Final Complete Pack

IMPORTANT NOTE: The practice of using cracking tools, keygens, warez or any pirated software is not only considered illegal activity but it is a serious security risk.

Quote

trendmicro.com/vinfo

Quote

Keygen and Crack Sites Distribute VIRUX and FakeAV

Quote

University of Washington spyware study

Quote

Bad Web Sites: Malware

When you use these kind of programs, be forewarned that some of the worst types of malware infections can be contracted and spread by visiting crack, keygen, warez and other pirated software sites. In many cases, those sites are infested with a smörgåsbord of malware and an increasing source of system infection. Those who attempt to get software for free can end up with a computer system so badly damaged that recovery is not possible and it cannot be repaired. When that happens there is nothing you can do besides reformatting and reinstalling the OS.

Before we can continue, I need you to remove all cracks and keygens immediately to reduce the risk of infection/reinfection. If not, then we are just wasting time trying to clean your system. Further, other tools used during the disinfection process may detect crack and keygens so we need to ensure they have been removed.

Using these types of programs or the websites you visited to get them is almost a guaranteed way to get yourself infected!!

so what do i do now that i have removed cracks?

Ok, check for anything that may be left.

Run TFC by OT (Temp File Cleaner)
Please download TFC by Old Timer and save it to your desktop.
alternate download link

Save any unsaved work. TFC will close ALL open programs including your browser!
Double-click on TFC.exe to run it. If you are using Vista, right-click on the file and choose Run As Administrator.
Click the Start button to begin the cleaning process and let it run uninterrupted to completion.
Important! If TFC prompts you to reboot, please do so immediately. If not prompted, manually reboot the machine anyway to ensure a complete clean.

Reboot into Safe Mode with Networking
How to start Windows 7 in Safe Mode

Next run Superantisypware (SAS):

Download and scan with SUPERAntiSpyware Free for Home Users

• Double-click SUPERAntiSpyware.exe and use the default settings for installation.
  
• An icon will be created on your desktop. Double-click that icon to launch the program.
  
• If asked to update the program definitions, click "Yes". If not, update the definitions before scanning by selecting "Check for Updates". (If you encounter any problems while downloading the updates, manually download them from here. Double-click on the hyperlink for Download Installer and save SASDEFINITIONS.EXE to your desktop. Then double-click on SASDEFINITIONS.EXE to install the definitions.)
  
• In the Main Menu, click the Preferences... button.
  
• Click the Scanning Control tab.
  
• Under Scanner Options make sure the following are checked (leave all others unchecked):
  • Close browsers before scanning.
    
  • Scan for tracking cookies.
    
  • Terminate memory threats before quarantining.
• Click the "Close" button to leave the control center screen.
  
• Back on the main screen, under "Scan for Harmful Software" click Scan your computer.
  
• On the left, make sure you check C:\Fixed Drive.
  
• On the right, under "Complete Scan", choose Perform Complete Scan.
  
• Click "Next" to start the scan. Please be patient while it scans your computer.
  
• After the scan is complete, a Scan Summary box will appear with potentially harmful items that were detected. Click "OK".
  
• Make sure everything has a checkmark next to it and click "Next".
  
• A notification will appear that "Quarantine and Removal is Complete". Click "OK" and then click the "Finish" button to return to the main menu.
  
• If asked if you want to reboot, click "Yes".
  
• To retrieve the removal information after reboot, launch SUPERAntispyware again.
  • Click Preferences, then click the Statistics/Logs tab.
    
  • Under Scanner Logs, double-click SUPERAntiSpyware Scan Log.
    
  • If there are several logs, click the current dated log and press View log. A text file will open in your default text editor.
    
  • Please copy and paste the Scan Log results in your next reply.
• Click Close to exit the program.

If you have a problem downloading, installing or getting SAS to run, try downloading and using the SUPERAntiSpyware Portable Scanner instead. Save the randomly named file (i.e. SAS_1710895.COM) to a usb drive or CD and transfer to the infected computer. Then double-click on it to launch and scan. The file is randomly named to help keep malware from blocking the scanner.


Rerun MBAM (MalwareBytes) like this:

Open MBAM in normal mode and click Update tab, select Check for Updates,when done
click Scanner tab,select FULL scan and scan (normal mode).
After scan click Remove Selected, Post new scan log and Reboot into normal mode.

Please ask any needed questions,post logs and Let us know how the PC is running now.