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View Full Version : Can a jpg attachement contain a virus?


Drekkus
01-08-2005, 12:30:05
I got an email from someone I don't know, with the text:

"Hi!
I send the photo!
While! Write!"

Attachement is the jpg file, 5 kb in size.

Could this be a virus? Our corporate virusscan has picked up every virus sent my way until now, so I don't know if it is. I am curious to see what's on the picture though. :D

Funko
01-08-2005, 12:43:13
Almost certainly a virus.

Gary
01-08-2005, 12:51:43
http://www.tulane.edu/~dmsander/WWW/335/335Struct1.gif

OK it's a gif, not a jpg, but there's a limit to the time one should waste on a gag.

Nav
01-08-2005, 13:03:25
I doubt it somehow. I don't think its possible to store mailicous code within a jpeg file, and if it's not actually a jpeg file it can't be opened by a graphics package...

unless of course its a file.jpg.exe (which might be the case if you have extensions hidden)

Funko
01-08-2005, 13:23:12
Er... you could it was a microsoft exploit

http://www.f-secure.com/v-descs/ms04-028.shtml

Spartak
01-08-2005, 13:55:56
Always delete anything you don't recognise.

Nav
01-08-2005, 16:09:39
ha well I should have known, didnt think it would be possible to do anything dodgy with a jpeg file.

Drekkus
01-08-2005, 16:35:33
Originally posted by Funko
Er... you could it was a microsoft exploit

http://www.f-secure.com/v-descs/ms04-028.shtml If I check there if I have a vulnarability, it says that I might have a that problem, and should update. When I use windows update, it says there aren't any updates...

Gary
01-08-2005, 16:58:29
I don't recognise any of you.

Prepare to be deleted !

Gary
01-08-2005, 16:59:33
Originally posted by Drekkus
If I check there if I have a vulnarability, it says that I might have a that problem, and should update. When I use windows update, it says there aren't any updates... Maybe because you are already up-to-date with all the updates ? So you don't have a known problem ?

No longer Trippin
02-08-2005, 01:34:36
Known and corrected are two different things when dealing with MS.

MDA
02-08-2005, 16:18:50
Hmm. That virus has the classic conical HIV core, and has triggered my post-gradschool stress disorder. *panic* *rage*
:shoot:

Cruddy
02-08-2005, 19:28:12
Originally posted by Nav
I doubt it somehow. I don't think its possible to store mailicous code within a jpeg file, and if it's not actually a jpeg file it can't be opened by a graphics package...


In theory code can be stored inside Jpegs, although getting that code to execute through the processor isn't an easy job.

Of course, another virus which attacks the loading modules for popular graphics packages could execute it, although I think such a crude attack would trigger most AV software (and quite possibly that AV hardware on 64 bit processors).