Author Topic: Windows 7 fails here....  (Read 10677 times)

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Offline polonus

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Windows 7 fails here....
« on: May 05, 2009, 08:32:11 PM »
In Windows NT, 2000, XP and Vista, the option " Hide extensions for known file type in Windows Explorer is the default setting,  And virus writers used this "feature" to make people mistake executables for stuff such as document files or text files.

The trick was to rename VIRUS.EXE to VIRUS.TXT.EXE or VIRUS.JPG.EXE, and Windows would hide the .EXE part of the filename.

Additionally, virus writers would change the icon inside the executable to look like the icon of a text file or an image, and everybody would be fooled.

Surely this won't work in Windows 7.

Lets try. Windows 7 RC is out today.

Well. It sure looks like a text file in Explorer:

But it actually is an executable:

Windows 7 Fails          

So hold to your av solution, folks, re: http://www.f-secure.com/weblog/archives/00001675.html

polonus
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Re: Windows 7 fails here....
« Reply #1 on: May 06, 2009, 12:08:40 AM »
wow i would've opened the "text" file so fast without thinking

thanks for the post

Offline Lisandro

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Re: Windows 7 fails here....
« Reply #2 on: May 06, 2009, 12:14:07 AM »
Shame... when we think we're improving, old tricks come back again :P
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Offline DavidR

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Re: Windows 7 fails here....
« Reply #3 on: May 06, 2009, 01:32:46 AM »
I'm sure there are other ill advised default settings inherited from previous versions (rather just accepted as the norm).

Me I can't understand when MS went to the trouble of providing outbound protection in the Vista firewall, yet by default it is disabled. I wonder if that is the case in W7 ?

Personally I feel the same about Hidden Files and Folders being the default action (in the same area as known file types) are they still hidden by default in W7 ?
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Offline .: Mac :.

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Re: Windows 7 fails here....
« Reply #4 on: May 06, 2009, 04:14:22 AM »
Very interesting. I can see why so many people are fooled into opening malware like this.
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Online bob3160

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Re: Windows 7 fails here....
« Reply #5 on: May 06, 2009, 04:22:39 AM »
Win 7 RC succeeded here.  ;D ;D
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Offline .: Mac :.

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Re: Windows 7 fails here....
« Reply #6 on: May 06, 2009, 06:05:02 AM »
Win 7 RC succeeded here.  ;D ;D

Actually Win 7 RC Fails, thats the version F-Secure used at the link in Polonus' post.
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Offline RejZoR

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Re: Windows 7 fails here....
« Reply #7 on: May 06, 2009, 10:52:57 AM »
The only fail are uneducated users.
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Offline scythe944

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Re: Windows 7 fails here....
« Reply #8 on: May 07, 2009, 04:57:14 AM »
Quote
The only fail are uneducated users.

I agree.  Sadly, MS automatically hides file extensions from users, only because most users don't understand what they are.  If they weren't hidden by default though, you'd think that people would start gaining experience and hopefully learn that opening files with "multiple" extensions might not be safe.
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Offline lukor

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Re: Windows 7 fails here....
« Reply #9 on: May 07, 2009, 09:00:00 AM »
Hi guys,

I must somewhat disagree, allthough I also think that hidding the extension is bad, and I hate it, showing it does not appear to me as a big security advantage for average grandma.

Since .txt is good, .exe is bad, .ini is good, .reg is bad, .jpg is good unless you have your system unpatched, .avi is good, unless it downloads you some codecs, .rtf is bad since it actually may run word and be actually infected .doc, .ppt might be good, but actually is bad as well, .eml is good, but might contain attachments, .cmd is bad, .pif and .lnk might be good and bad at the same time, I am afraid I have already lost your attention and my grandma surely must be already sleeping....




Offline Lisandro

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Re: Windows 7 fails here....
« Reply #10 on: May 07, 2009, 01:47:22 PM »
I have already lost your attention
Lol ;D
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Re: Windows 7 fails here....
« Reply #11 on: May 07, 2009, 02:21:36 PM »
Win 7 RC succeeded here.  ;D ;D

Actually Win 7 RC Fails, thats the version F-Secure used at the link in Polonus' post.
Mac,
If you look carefully at the picture I posted, you'll notice it shows the .iso extension.
This picture was made on an updated Win7 system.

Showing extensions always required a settings change. No different now.
Why is this such a big deal in Win7 ?  It wasn't mentioned in Vista.
Or is this just another ploy by the usual MS bashers  ???

I found the upgrade to be extremely smooth and without any troubles.

I upgraded one Vista system and one test computer that had used a previous beta version of Win 7.
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Re: Windows 7 fails here....
« Reply #12 on: May 07, 2009, 03:37:38 PM »
I agree with lukor. Plus, if extension is there, users can break themself. Imagine users renaming lets say avast.exe to avast.exf or erasing entire extension and then wondering why the program doesn't work anymore. Thats probably the main reason why MS prefers extensions to be hidden.
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Offline DavidR

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Re: Windows 7 fails here....
« Reply #13 on: May 07, 2009, 03:45:19 PM »
The thing that gets me about the hide extensions is that it is 'only' applied to what they say are known extension types, known to whom for heavens sake, well MS. Certainly not the people whom we seem to be trying to protect from themselves.

Me I'm for transparency show them all so that these double file extensions would be seen. If someone decides to change a file type, having done so MS pop-up the are you really sure you want to do this, if they then continue, well I have very little sympathy (sorry about that). Some people are their own worst enemy when they start tinkering and hiding known file types won't stop that.
« Last Edit: May 07, 2009, 03:48:14 PM by DavidR »
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Offline lukor

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Re: Windows 7 fails here....
« Reply #14 on: May 07, 2009, 05:28:37 PM »
The thing that gets me about the hide extensions is that it is 'only' applied to what they say are known extension types, known to whom for heavens sake, well MS. Certainly not the people whom we seem to be trying to protect from themselves.

Isn't it "known to the system" which means there is an association for the extension in question ?