Pendrive Safety

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Pendrive Safety

Post by BIT0122-Amit on Sat May 30, 2009 11:11 pm

It’s a common problem that most of our computers get infected by viruses that usually spread through pendrives or USB drives and in some cases Viruses like Ravmon Virus , Heap41a worm which are not detected by anti virus normally spreads. In order to avoid this here is a tip that helps you to stop virus from entering your computer from usb drives.

Connect your Pen Drive or USB drive to your computer .
Now a dialogue window will popup asking you to choose among the options.

Don’t choose any of them , Just simply click Cancel.

Now go to Start–> Run and type cmd to open the Command Prompt window .

Now go to My Computer and Check the Drive letter of your USB drive or Pen Drive.

In the Command prompt type the drive letter: and Hit Enter .

Now type dir/w/o/a/p and Hit Enter

You will get a list of files . In the list , search if anyone of the following do exist

1. Autorun.inf

2. New Folder.exe

3. Bha.vbs

4. Iexplore.vbs

5. Info.exe

6. New_Folder.exe

7. Ravmon.exe

8. RVHost.exe or any other files with .exe Extension .

If you find any one of the files above , Run the command attrib -h -r -s -a *.* and Hit Enter.

Now Delete each File using the following Command del filename ( E.g del autorun.inf ) .

That’s it .Now just scan your USB drive with the anti virus you have to ensure that you made your Pen Drive free of Virus .


Source: internet


Last edited by BIT0122-Amit on Mon Feb 08, 2010 1:07 am; edited 1 time in total
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Re: Pendrive Safety

Post by BIT0104-ANIK on Tue Jun 16, 2009 12:49 pm

i would like to add another way. before u use ur pendrive, go to 'run' type 'gpedit.msc'. then go to 'computer configuration'>'administrative tamplate'>'system'. here among other folders there are some sentences. u shall find the line 'turn off autoplay'. its default setting is 'not configured'. enable it and select all drives. that will prevent ur pendrive to run automatically if its infected with 'autorun.inf' or that sort of viruses.now when u use pendrive, just scan it first.
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Re: Pendrive Safety

Post by BIT0104-ANIK on Thu Jul 23, 2009 11:41 am

let me tell u an interesting event...i have kaspersky original version but still yesterday my pendrive went blank (due to virus obviously) when i have inserted it.even i was not being able to scan it because there was nothing(!) inside it. so...what have i did? i just went to ubuntu, inserted the pendrive, there was all my things. but with them there were two folders with locked icon i have recognized as viruses(named recycler). i could not delete them. what have i did? i went to the properties of these folders, changed their attribute to read and write, then deleted them. i have manually did what kaspersky failed to do. thought it might help u.
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Re: Pendrive Safety

Post by BIT0122-Amit on Fri Jul 24, 2009 4:14 am

Hmm... manual deletion of virus files from pendrive is the best method.
However, sometimes manual deletion doesn't work when in some rare cases like yours.

The same thing happened to my pendrive on the day of C project presentation, and you can guess what I felt when I suddenly realized that my pendrive was not working in the Teacher's PC.
(I panicked of course, but didn't show it to others :p )
I have guessed a probable reason behind this "locking" of pendrive, but am not sure whether the explanation is valid or not.


Sometimes when the virus is being copied to the pendrive, and in the time between, you pull away the pendrive from usb port, the virus file kind of ends without the EOF part. Due to that, the meta datas kept in pendrive kind of mutates, resulting in weird behaviors like locking down of pendrive, etc.

BTW,
i have kaspersky original version
Does that mean you bought the original version? or you cracked the original version and now using the cracked version?

And in both cases, do you update the VDFs(Virus Defintion Files)regularly?

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Re: Pendrive Safety

Post by BIT0104-ANIK on Fri Jul 24, 2009 5:45 am

yesss, cost me 700$ for god's sake...but i don't have the faintest idea what a vdf file is....but i do update it regularly...by the way....ur guess seems logical.
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Re: Pendrive Safety

Post by BIT0122-Amit on Fri Jul 24, 2009 5:52 am

:O 700$= 700 hunderd dollars? :S I thought it was 700 tk in bangladesh :S
And don't bother about VDF files :s
In short, it has definitions about virus signatures and etc which are used by anti viruses to identify the viruses :S
And yeah Neutral I guess you do that regularly Neutral

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Re: Pendrive Safety

Post by BIT0104-ANIK on Fri Jul 24, 2009 5:42 pm

it did cost me in dollars.. Wink
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Re: Pendrive Safety

Post by BIT0122-Amit on Fri Jul 24, 2009 6:21 pm

Neutral 700$*70 = 49,000 Taka?
tell me you are joking Neutral please Neutral

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Re: Pendrive Safety

Post by BIT0122-Amit on Fri Nov 20, 2009 11:51 pm

BTW. there is another thing I found today. sometimes even after removing the viruses, some folders become hidden in your pendrive. In that case, you can try this command:

Code:
attrib *.* -r -a -s -h /s /d

where

* /s attributes processes matching file in the current folder and subfolders.
* /d attributes processes folders also.

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Re: Pendrive Safety

Post by BIT0122-Amit on Mon Feb 08, 2010 1:06 am

Also, sometimes viruses create folders named "RECYCLER" "USBSYSTEM" "AVAST" "KASPERSKY"
you have to use rmdir command to remove those folders.


For example, if the folder name is "RECYCLER" you have to write:

Code:
rmdir RECYCLER /s /q
where
/s means it will delete the folder "RECYCLER" as well as the sub folders inside it.
/q means it will not ask for confirmation.

rock on!

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