I'm Kuttus and I am going to try to assist you with your problem. Please take note of the below:
I will start working on your malware issues, this may or may not, solve other issues you have with your machine.
The fixes are specific to your problem and should only be used for this issue on this machine!
The process is not instant. Please continue to review my answers until I tell you your machine is clear. Absence of symptoms does not mean that everything is clear.
If you don't know, stop and ask! Don't keep going on.
Please reply to this thread. Do not start a new topic.
Refrain from running self fixes as this will hinder the malware removal process.
It may prove beneficial if you print of the following instructions or save them to notepad as I post them.
Your security programs may give warnings for some of the tools I will ask you to use. Be assured, any links I give are safe.
Before we start:
Please be aware that removing malware is a potentially hazardous undertaking. I will take care not to knowingly suggest courses of action that might damage your computer. However it is impossible for me to foresee all interactions that may happen between the software on your computer and those we'll use to clear you of infection, and I cannot guarantee the safety of your system. It is possible that we might encounter situations where the only recourse is to re-format and re-install your operating system, or to necessitate you taking your computer to a repair shop.
Because of this, I advise you to backup any personal files and folders before you start.
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STEP 1: Run a scan with OTL by OldTimer
<ol><li>Download the OTL utility using the below link :
<><a title="External link" href="http://oldtimer.geekstogo.com/OTL.exe" rel="nofollow external">OTL DOWNLOAD LINK</a> <em>(This link will automatically download OTL on your computer)</em></></li>
<li>Double click on the icon to run it. Make sure all other windows are closed and to let it run uninterrupted.
<img src="http://malwaretips.com/blogs/wp-content/uploads/2012/07/OTL-logo.png" alt="" title="OTL-logo" width="106" height="118" class="alignnone size-full wp-image-3946" /></li>
<li>When the window appears, <>underneath Output</> at the top change it to <>Minimal Output</>.</li>
<li>Check the boxes beside <>LOP Check</> and <>Purity Check</>.</li>
<li>Click the<> Run Scan</> button.
<img src="http://malwaretips.com/blogs/wp-content/uploads/2012/07/OTL.png" alt="" title="OTL" width="658" height="584" class="alignnone size-full wp-image-3945" /></li>
<li>When the scan completes, it will open two notepad windows. <>OTL.Txt</> and <>Extras.Txt</>. These are saved in the same location as OTL.
<>Please post this 2 logs in your first reply.</>.</li></ol>
Settings You need to Select in OTL
Click the Scan All Users checkbox.
Change Standard Registry to All.
Check the boxes beside LOP Check and Purity Check.
<em>Note: If OTL.exe will not run, it may be blocked by malware. Try these alternate versions: <a title="External link" href="http://www.itxassociates.com/OT-Tools/OTL.scr" rel="nofollow external">OTL.scr</a>, or <a title="External link" href="http://oldtimer.geekstogo.com/OTL.com" rel="nofollow external">OTL.com</a>.</em>
<ol><li>Download AdwCleaner from the below link.
<><a href="http://general-changelog-team.fr/fr/downloads/finish/20-outils-de-xplode/2-adwcleaner" target="_blank">ADWCLEANER DOWNLAOD LINK</a></> (This link will automatically download Security Check on your computer)</li>
<li>Close all open programs and internet browsers.</li>
<li>Double click on <>adwcleaner.exe</> to run the tool.</li>
<li>Click on <>Delete</>,then confirm each time with <>Ok</>.</li>
<li>Your computer will be rebooted automatically. A text file will open after the restart.</li>
<li>Please post the contents of that logfile with your next reply.</li>
<li>You can find the logfile at <>C:\AdwCleaner[S1].txt</> as well.</li>
</ol>
<hr/>
STEP 2: Run a scan with Junkware Removal Tool
Please download Junkware Removal Tool to your desktop from here
Turn off your antivirus software now to avoid potential conflicts
Double-click to run the tool. For Windows Vista or 7 users, right-click the file 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) will be saved to your desktop and will automatically open
Post the contents of JRT.txt into your next reply
Download Malwarebytes Anti-Rootkit from here to your Desktop
Unzip the contents to a folder on your Desktop.
Open the folder where the contents were unzipped and run mbar.exe
Follow the instructions in the wizard to update and allow the program to scan your computer for threats.
Make sure there is a check next to Create Restore Point and click the Cleanup button to remove any threats. Reboot if prompted to do so.
After the reboot, perform another scan with Malwarebytes Anti-Rootkit to verify that no threats remain. If there are threats, click Cleanup once more and reboot.
When done, please post the two logs in the MBAR folder(mbar-log.txt and system-log.txt)
Attached are the logs of various tools you mentioned.
MBAM anti rootkit didn't detected any malware. I mentioned in my original post that I had already performed full scan with MBAM. I would like to reiterate that issue is still prevailing.
I guess I've messed up some registry keys before your reply.
Now every time I boot my PC, a default browser(chrome) starts up and tries to open fsquirt.exe
Guess I've figured out the process which helps the malware.
It is "explorer.exe". I now tried to kill process from task manager and tried to open a new task "explorer" in task manager. Voila. Google chrome opened with fsquirt.exe web page.
No. Whatever the browser that is set as default in my PC. If you look at my original post I would have mentioned that after closing the webpage "Windows explorer has stopped working" message box appears. So I guess the malware had modified or damaged my "explorer.exe"