So is it ok if I delete the files manually while on Safe mode next time? Like un-hiding system files and delete the suspicious files or the files I don't recognize being there
You can delete files manually in safe mode if you are sure they are bad. Don't ever delete a file just because you do not recognize it
Anytime you come across a suspicious file or one that you do not recognize, search the name using Google or the following links:BC's File DatabaseBC's Startup Programs DatabaseFile Research CenterThreatExpert Malware SearchIf no search results are found, you are given the option to "Submit a New Sample".
Determining whether a file is malware or a legitimate process sometimes depends on the location (path) it is running from. One of the ways that malware tries to hide is to give itself the same name as a critical system file. However, it then places itself in a different location on your computer. A file's properties may give a clue to identifying it. Right-click
on the file, Properties
and examine the General and Version tabs.
If you cannot find any information, the file has a legitimate name but is not located where it is supposed to be, or you want a second opinion, submit it to jotti's virusscan
. In the "File to upload & scan
" box, browse to the location of the suspicious file and submit (upload) it for scanning/analysis.
-- Then post back with the results of the file analysis.
I just want to know how that autorun.inf folder works? Or what is it?
Flash (usb, pen, thumb, jump) drive infections usually involve malware that loads an autorun.inf
file into the root folder of all drives (internal, external, removable). When the removable media is inserted, autorun looks for autorun.inf and automatically executes another malicious file to run on your computer. When a flash drive becomes infected, the Trojan will infect a system when the removable media is inserted if autorun has not been disabled.
" is the feature built into Windows that automatically
runs a program specified by an "autorun.inf
" file whenever a CD-ROM, DVD or USB drive is plugged into a Windows-based computer. Autorun is intended as a convenience to automatically start an installer when removable media is inserted into the computer.
Keeping Autorun enabled on USB and other removable drives has become a significant security risk
due to the increasing number of malware variants that can infect them and transfer the infection to your computer. Read Danger USB! Worm targets removable memory sticks
You can hold down the Shift
key when inserting the drive into your computer until Windows detects it to keep autorun.inf
from executing automatically. However, I recommend disabling the Autorun feature
feature on USB and removable drives as a method of prevention. This should keep the malicious file from automatically running upon insertion and infecting your system while allowing you to safely perform a scan.
The easiest way to disable Autorun on a specific drive is to download and use Tweak UI PowerToy
- After installation, launch Tweak UI, double-click on My Computer in the tree menu on the left, then click on AutoPlay > Drives. This will allow you to change the system settings for AutoPlay/autorun.
- Uncheck the drives you want to disable AutoPlay on and click on Apply.
- Next, click on the Types in the left tree. This allows you to control whether Autoplay is enabled for CD and DVD drives and removable drives. You may need to restart Tweak UI if it closes after step 2.
- Uncheck the box to disable Autoplay for a particular type of drive.
- Click Apply.
If needed, see Disable Autorun/AutoPlay in XP with Tweak UI
" for instructions with screenshots.Note: When Autorun is disabled, double-clicking a drive which has autorun.inf in its root directory may still activate Autorun so be careful. Disabling autorun/autoplay does not prevent you from accessing those media sources. They are still available by opening My Computer and accessing the source drive (cd, dvd, usb/flash drive or external hard drive).
Always scan USB Flash Drives after they have been used in other computer systems, even your own. An easy way to do this is to download "ClamWin Portable Antivirus
", put it on your USB Flash Drive, update its definition files and perform a scan.
Another prevention measure you can use is Symantec's NoScript
utility. Scroll down to the section "How to disable (or re-enable) the Windows Scripting Host" to find the link and follow the instructions
. Noscript will disable the Windows Scripting Host and prevent VBScripts from running on your machine until you run the utility again. Firefox also has a free NoScript Add-on
for its browser.