virus keeps reducing my free hard disk

June 7, 2011 at 03:58:35
Specs: Windows 7 Home Premium, 2GB
I am using a new HP Compaq Presario CQ 60 64 bit AMD Sempro PC with 2GB RAM and the OS is Windows 7 Home Premium with Microsoft Security Essentials antivirus. After inserting and ejecting a friend's pendrive into my PC this problem started. Thus my PC's free hard disk space kept reducing bit by bit, then it got as low as 99MB of free hard disk space. I suspected a virus, so first I deleted some of my documents to create a free space of about 2GB. Then, I scanned with my antivirus but no virus was found. Then I opened an explorer window and went to Organise --- Folder and Search Options --- View; then checked the "Show Hidden Files and Folders" radiobutton and checked the "Hide protected operating system files" checkbox.
After i went to check whether it was the recycler virus but did not find any such virus both on my machine or my pendrive(which had been previously formated).

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June 7, 2011 at 10:29:35

Let's get some diagnostics, see if there is something 'hidden', and then determine what strategy to pursue.

Please download GMER:
[A randomly named file downloads. (Recommended)]

Disconnect from the Internet and close all running programs.

Temporarily disable any real-time active protection so your security programs will not conflict with gmer's driver:

Double-click on the randomly named GMER file (i.e. n7gmo46c.exe)
Allow the gmer.sys driver to load if asked.

GMER opens to the Rootkit/Malware tab and performs an automatic quick scan when first run. (Please do not use the computer while the scan is in progress.)

If you receive a WARNING!!! about rootkit activity and are asked to fully scan your NO

Now, click the >Scan< button.
If you see a rootkit warning window, click OK.

When the scan finishes, click 'Save...' button to save the scan results to your Desktop.
Save the file as >gmer.log<

>>Click the Copy button and Paste the results in your reply.<<

Note: Please, do not take action on any of the information on the GMER report!!

If you encounter any problems, try running GMER in Safe Mode:

If GMER crashes or keeps resulting in a BSODs, uncheck 'Devices' (on the right side) before scanning.

Next, please download mbr.exe

Save the file to your Desktop.
Double-click >mbr.exe< and follow the prompts.

When mbr.exe is done, it creates a log.
>>Also copy and paste contents of the mbr.exe log in your reply.<<

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