Autorun.inf is a file which starts automatically whenever you insert your pen drive or a compactdisk(CD). So when this file is replaced with a coding which when started , can disable your antivirus and run other virus program from your pendrive or CD without your knowlegde.
Nowadays there is a recent shortcut autorun virus which will make your files in the pendrive into shortcut files. Well I shall explain you how to disable that virus :
- Disable the autoplay function in your system.
- Install an updated antivirus program.
Disable Autorun (Windows XP) :
- Download TweakUI powertoy for XP : Click Here.
- Install it.
- Go to Start -> Powertoys for Windows XP -> Tweak UI.
- Expand 'My Computer' Tree in Tweak UI.
- Expand Autorun Tree.
- In Drives Section, Unselect all the drives.
- In Types Section, unselect all the drives.
- Click on Apply.
- Select OK.
Disable Autorun (Windows 7) :
- Launch the Run dialogue box by pressing Win + R, then type Gpedit.msc and press Enter.
- In The Local Group Policy Editor go to:
Computer Configuration > Administrative Templates > Windows Components.
- Locate the autoplay option and open it.
- Click the enabled button and select all drives from option and apply .
Preventive Measures:
- Disable the Autorun
- Install an Antivirus!!!!!
- Before opening any drive, scan it with a well known antivirus(listed at the end)
- If you want to open it without scanning or if you do not have an antivirus installed (Not Recommended), then do the following :
- Open My Computer
- Go to Tools -> Folder Options
- Go to View Tab -> Unselect 'Hide Extensions for Known File Types'
- Then select the required drive, right click -> EXPLORE. Do not double click to open the drive. This will activate the autorun file inturn activating the virus....
- Do not files of type .lnk or .exe(unless you scan with antivirus).
- Only open document files.
- Some files may contain double extension such as 'xxx.doc.exe' with a Document Icon. Those are definitely viruses. Delete them.
- Launch the RUN dialogue box by pressing win + r , then type cmd .
- In the command prompt type the below commands one by one
attrib -h -r -s /s/d g:*.*
Replace the g with the drive name of your usb path.
Here h denotes hidden files, r is for read only files and s for system. -h -r -s are used for making them to remove those properties. /s is to process all files and /d is to process all folders as well.*.* denotes all files with any extension.
You simply change the letter g to your usb drive letter and run the above highlighted command and then run the below command :
drive name:\\ del autorun.inf
drive name:\\ del *.lnk
Replace drive name with your usb drive letter .
- Done with this for now.
Always have a antivirus installed and update it regularly.nod32 , avira , avast and many more powerfull antiviruses are available in the internet for free and prevent your system from Viruses.
For any help free to say.....
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