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Another Sony Rootkit?

An anonymous reader writes to tell us F-Secure is reporting that the drivers for Sony Microvault USB sticks uses rootkit techniques to hide a directory from the Windows API. "This USB stick with rootkit-like behavior is closely related to the Sony BMG case. First of all, it is another case where rootkit-like cloaking is ill advisedly used in commercial software. Also, the USB sticks we ordered are products of the same company — Sony Corporation. The Sony MicroVault USM-F fingerprint reader software that comes with the USB stick installs a driver that is hiding a directory under "c:\windows\". So, when enumerating files and subdirectories in the Windows directory, the directory and files inside it are not visible through Windows API. If you know the name of the directory, it is e.g. possible to enter the hidden directory using Command Prompt and it is possible to create new hidden files. There are also ways to run files from this directory. Files in this directory are also hidden from some antivirus scanners (as with the Sony BMG DRM case) — depending on the techniques employed by the antivirus software. It is therefore technically possible for malware to use the hidden directory as a hiding place."

35 of 317 comments (clear)

  1. Consider by nlitement · · Score: 4, Insightful

    It is therefore technically possible for malware to use the hidden directory as a hiding place. Isn't software behaving like that already considered malware?
    1. Re:Consider by wizardforce · · Score: 4, Insightful

      Isn't software behaving like that already considered malware?
      yes and no. it depends on what and how you use it. if you use the property of hiding directories as a simple way of keeping data from less experienced people [eg. slashdotters hiding the porn from their parents] then it isn't malware; in this case sony's software doesn't seem to be hding a directory for any good purpose, so yes it is malware.
      --
      Sigs are too short to say anything truly profound so read the above post instead.
    2. Re:Consider by B'Trey · · Score: 5, Insightful

      No. The distinction is WHO's doing the hiding. If a user on the computer intentionally hides files or directories from other possible users on the computers, it's not malware. It may or may not be ethical, depending on who's doing the hiding and why. Presumably, it's the owner of the computer and they have a right to hid info from prying eyes. If not, the issue is with the user's actions and not with the software. If, however, a program creates files or directories and hides them (by means other than simply using the H attribute, at least) from the owner/user of the computer, it's malware. It's understandable for a content owner to wish to protect their content, but that doesn't justify them altering the behavior of a computer without the owner's express understanding and permission for what they're doing.

      --

      "The legitimate powers of government extend only to such acts as are injurious to others." Thomas Jefferson.

    3. Re:Consider by Tom9729 · · Score: 2, Insightful

      Agreed. When I do an ls of my home directory, I don't really want to see 50+ config files/directories.

      I think the fact that Sony isn't hiding this directory with conventional means proves they're up to something shady...

  2. Hidden files by king-manic · · Score: 4, Insightful

    Is root kit now the new buzzword for "please send me traffic"? This isn't the same as a rootkit, it's just a annoyingly hidden directory. Can we tag this as FUD?

    --
    "There are more things in heaven and earth, Horatio, than are dreamt of in your philosophy."
    1. Re:Hidden files by j00r0m4nc3r · · Score: 4, Insightful

      It doesn't matter what their intent is, they are using rootkit techniques to hide shit on your computer. This allows other parties to piggyback on that tech and install other nastier UNDETECTABLE malware. It would be like if your house cleaning lady leaves your front door wide open when she leaves. Someone could stroll in, fuck your shit up, and leave undetected. Definitely something to seriously worry about.

    2. Re:Hidden files by Applekid · · Score: 5, Insightful

      Hiding from the API is pretty important, actually. That's done by pulling the rug under the pointers to the functions that retreives lists of files/directories. If that's not a Windows rootkit, what is?

      And much like their last rootkit, this one can easily be used to cloak files on your system and is pretty much a fantastic place to put your virus. Way to really push the limits, guys.

      --
      More Twoson than Cupertino
    3. Re:Hidden files by projectmalamute · · Score: 3, Insightful

      Those are not hidden from the operating system, try ls -a (twat)

    4. Re:Hidden files by Anonymous Coward · · Score: 1, Insightful
      The '.' naming convention is a convenience function, much like "hidden" directories in dos/windows, both of those have to be specifically honored by an application to have an effect.

      Do you see the difference yet or does someone have to break this down for you step by step till you understand?

  3. Why? by thatskinnyguy · · Score: 2, Insightful

    How many lawsuits is it going to take before Sony gets it into their head that rootkit=bad? I, for one, am going to fight against our new malware overlords.

    --
    The game.
  4. tsk tsk tsk... by JazzyMusicMan · · Score: 4, Insightful

    They are simply conditioning a public growing weary of dishonest tactics and policies to steer clear of any products they produce. Sony has many divisions and has a presence in many markets, and they are royally screwing all of them up. First the music cd fiasco, now this, no wonder they were prematurely blasted for the SecuROM program that was talked about on here a few days ago. Most people automatically saw it as a rootkit or something they didn't want on their computer because of the record that Sony is establishing for itself. It doesn't matter that maybe it wasn't a rootkit or something malicious, if the public starts thinking that everything you produce is going to create security vulnerabilities and screw up their machine, they'll simply stay away without giving you a second (or third, [or fourth]) chance...

  5. Re:Sony by plover · · Score: 4, Insightful

    It happened when they added a movie studio and a recording label to the corporation. The media side of the house demanded copy protection from the technical side of the house, without understanding the technical limitations.

    --
    John
  6. kiosk by SolusSD · · Score: 5, Insightful

    It seems to me that our personal computers are becoming more and more like kiosks where "vendors" install software they want and the "end users", ie) us, have less and less control over our own PCs. Think about it- DRM, (truly) hidden folders, subscriptino software, product activation, ..vista?

    1. Re:kiosk by jshriverWVU · · Score: 2, Insightful

      that's why some people are moving to linux and OS X. No matter what your believe on open vs closed source code. Linux is more "free" as in "freedom" than Windows, you don't hear people complaining about putting in a CD/DVD/USB key and having their system owned by some root-kit or DRM system that was installed w/o intervention. The freedom to own and do what I want with my hardware makes Linux a necessity. I agree with you. Running windows anymore is like running a kiosk. You pay for the hardware, and the software companies dictate what you do with that hardware. With linux, I dictate what I do with my hardware. It's that simple.

    2. Re:kiosk by swb · · Score: 2, Insightful

      You're not kidding.

      I keep trying to convince my customers they'll pay me less money in the long run to do clean setups on new machines versus the time spent both uninstalling conflicting software they won't/can't use (ie, Symantec AV, PDF Complete, etc) and the problems they inevitably run into down the road when the factory installed crapware craps the machine out, requiring a clean load anyway.

      I've pretty much quit gaming due to all the copy protection crap that gets installed with most modern games (and interferes with legitimate software).

      Another followup to your post mentions migrating to OS X/Linux, where I guess you're less victim to this kind of nonsense, but you're still locked in (to Jobs/Apple) or dealing with a lot less functionality (Linux zealots aside).

  7. Re:Sony by Otter · · Score: 4, Insightful
    When did politics and this kinda crap really start.

    Hype here notwithstanding, this is not a "rootkit". It seems to be a bizarre form of write-protection.

  8. SUCKERS! What did you expect? by Anonymous Coward · · Score: 2, Insightful

    Fool me once, shame on you. Fool me twice, shame on me.

    How fucking stupid can you people be? Stop buying Sony!

    -mcgrew

  9. Re:Sony by SenseiLeNoir · · Score: 2, Insightful

    Yes, they were very successful with the 3.5 inch floppy.. also Trinitron screens, and the CD, which was co-developped with philips. They were also very successfull at putting DV/Firewire video in the hands of ordinary customers.

    yeah they made some lemons too, but like any tech company, that actually tries to invent stuff.

    --
    Have a nice day!
  10. Re:Format before use by djdbass · · Score: 2, Insightful

    Yeah just stick it in your pc and format it before you stick it in your....

    Wait...

  11. Re:Sony by ajs · · Score: 3, Insightful

    I posted this on the firehose version of this article. Thought I should do so here too:

    Please note: this software simply creates a directory that is hidden from the Windows API for its fingerprint authentication. It's not actually a rootkit, just using one of the many tools of the trade of rootkits. The concern is that the hidden directory is hidden from all of the Windows API, including virus scanners, and thus could be used by malicious software to hide infected files.

    I'm not sure that it's reasonable to accuse Sony of distributing a rootkit when they've simply distributed software which uses a technique that could accidentally help malicious software.

    It's also probably a bad thing to keep swinging the rootkit-bat around like this. The next time some large corporation really tries to root all of their customers' machines, no one will believe the story.

  12. You can't solve this on a single system. by argent · · Score: 3, Insightful

    The issue here is the biometric stuff.

    This is an inherent problem in biometrics: you have to trust every scanner that takes a reading not to be trapdoored.

    The entire authentication process has to be performed verifiably in the scanner hardware and firmware, and the scanner itself had to be trusted - either it's your scanner or it belongs to someone you have to trust anyway.

    But no reversible form of the biometric information can be transferred to potentially untrusted storage.

  13. what a bunch of weasels by swschrad · · Score: 2, Insightful

    down around the courthouse, they have some terms for mutts who don't learn and keep on doing the same crimes.

    the classy term is "recidivist."

    of the others, we can probably safely post "weasel," "snake," "bastard," "crook," and "lowlife."

    HDTV is around the bend, and I'm remodelling the basement soon to accomodate its new wiring requirements. Sony, the snake-in-a-box company, is not going to be a part of this undertaking.

    --
    if this is supposed to be a new economy, how come they still want my old fashioned money?
  14. Re:A Nasty Trick by MrBulwark · · Score: 2, Insightful

    See, if you had a real OS like Windows, this kind of security problem wouldn't...oh...nevermind.

  15. Re:Sony by Harmonious+Botch · · Score: 4, Insightful

    If it is a rootkit or not seems to me an academic question. I prefer to be asking: is my computer more vulnerable?

  16. Re:Rootkits aside... by deftcoder · · Score: 5, Insightful

    A malicious driver is being installed that patches the Win32 API ( FindFirstFile() and FindNextFile() ) not to report the presence of a directory when enumerating through your C:\Windows folder.

    How is this *NOT* a rootkit? This is the very definition of one!

    --
    Peace sells, but who's buying?
  17. Re:Wow... by Idaho · · Score: 3, Insightful

    Did anyone read the article before coming up with the post title? They say right in the middle of the article that it's not a rootkit, and "It is our belief that the MicroVault software hides this folder to somehow protect the fingerprint authentication from tampering and bypass.

    The intent is irrelevant w.r.t. the fact whether or not it uses rootkit-like behavior to implement it.


      It is obvious that user fingerprints cannot be in a world writable file on the disk when we are talking about secure authentication.


    This is why file access permissions/restrictions where invented in the 1970's.

    This is also nothing new in terms of USB drives. I have a USB flash drive, which I can't remember the name of, that essentially keeps a secure partition hidden from Windows unless you run a special app to put in a password to make it visible to Windows.


    That is a completely different technique at about 10 different levels. Of course the driver of some USB device may chose to reserve parts of the storage on said USB device for internal usage such that it cannot be (easily) accessed by normal means (i.e. the API offered by said driver). However, "cloaking" parts of the driver itself using rootkit-like mechanisms has, well, about nothing in common with such techniques.
    --
    Every expression is true, for a given value of 'true'
  18. Re:Wow..., double Wow. by MontyApollo · · Score: 2, Insightful

    It all depends on your definition. What was described in the article satisfies many people's definition of a rootkit, no matter how the authors chose to word it.

    Everybody saying it is not a rootkit needs to define rootkit.

    The example you used in your earlier post about partitions on memory sticks is completely different than what is happening here (the windows API is being modified to hide a directory on the c: drive)

  19. Re:Wow... by The+MAZZTer · · Score: 2, Insightful

    This is also nothing new in terms of USB drives. I have a USB flash drive, which I can't remember the name of, that essentially keeps a secure partition hidden from Windows unless you run a special app to put in a password to make it visible to Windows.

    That's different. Windows can't "see" more than one partition on a USB flash drive... which is why the Disk Management MMC snap-in won't let you create more. If you make more than one partition Windows only mounts the first one it sees.

    Of course this assumes you're talking about actual partitions. More likely you're confusing a virtual drive for a real partition; I'm thinking TrueCrypt, which is promoted by many as a way to keep files safe and encrypted on your thumb drive. You enter a password and an encrypted file on the first and only partition on the drive is mounted as a virtual partition on it's own drive letter. Nothing is ever hidden from Windows; Windows never knows that the simple file is supposed to be a partition, nor what the encryption key is that is needed to decrypt it. TrueCrypt supplies the first function, while the user's password or keyfile supplies the second. The only things hidden are the things the user explicitly wanted hidden by making the TrueCrypt Volume and putting files in there.

  20. Re:Sony by spikedvodka · · Score: 2, Insightful

    at this point, where it "looks like a duck, quacks like a duck, and smells like a duck"

    I'm almost tempted to buy one, just so that I can submit the software to clamav, symantec, mcafee, et. al.

    It looks like a virus, quacks like a virus, and smells like a virus, lets treat it like a virus

    --
    I will not give in to the terrorists. I will not become fearful.
  21. Re:Sony by AKAImBatman · · Score: 3, Insightful

    Your definition is the original definition, but it's not how it's currently used. By your definition, the BMG CDs were not rootkits either. These days "rootkit" is used on Windows systems to refer to software which modifies the kernel space for nefarious purposes.

  22. But it doesn't work for security, either! by dpilot · · Score: 2, Insightful

    For a moment get past the Rootkit or Registry thing.

    I just plain isn't good security. If they're really counting on Registry entries to "protect" the "secure" data, there must be a thousand ways to get around that in Windows, let along just plugging it into a Linux machine. Real security is HARD to do, and promoting something like this as "secure" when it really isn't is a disservice. I read one review a while back that indicated that *none* of these "secure USB" flash plugins were really secure.

    Incidentally, I have a USB flash plugin. The data I really care about is AES-encrypted in a container file that I can loopback mount and use the kernel crypto stuff to access.

    --
    The living have better things to do than to continue hating the dead.
  23. Re:Rootkits aside... by Skiron · · Score: 2, Insightful

    OK, I see what you are saying, but the point is NOTHING gets changed on the system - it uses MS code handles to employ the 'rootkit' - there is no subterfuge involved on the system at all!

    I think MS built in all this from trying to keep the innards so secret squirrel it is now coming back to bit them. Mark Russinovich, remember, was the one who sussed the secret squirrel stuff on the first Sony attempt at this - he (and Company) was very soon bought by MS to SHUT UP about it.

  24. About Sony and rootkits by Boycott+BMG · · Score: 2, Insightful

    I feel like I finally have to create a user account to correct a misconception I see a lot on the internet. It wasn't Sony that put a rootkit on the music CDs, it was Sony-BMG which is a separate company that is 50/50 owned by Sony and Bertelsmann (BMG stands for Bertelsmann Music Group). Furthermore, the top executives at Sony-BMG all come from the BMG side, like that guy Thomas Hesse who made those stupid remarks that consumers shouldn't care about rootkits. If anything, all the anger toward Sony should be directed at the entity involved, which is Sony-BMG. Just boycott their music.

  25. Re:Sony by Harik · · Score: 2, Insightful

    Actually, "rootkit" told me all I ever needed to know about their "security". It's nothing but a USB image aqusition device and PC-side software to handle the matching and authorization. In other words - completely useless from a security standpoint. Think DRM - plug in the USB stick, it copies the decryption software, image matcher AND THE SECRET KEY to your harddrive, then uses a rootkit to "obscure" it.

    The trick here is it's cheap as shit. Doing it properly on the keychain costs money - you'll need a decent processor to handle image aquisition and processing. Why bother with that when there's a 2+ghz CPU right next door on the bus? Worse, because they sell this crap as "security devices", they undercut everyone who spends the money to do it right. And of course they lie about how it really works, throwing buzzwords like "biometrically encrypted data storage" out.

    tl;dr: snake oil.

  26. Re:Sony by DigiShaman · · Score: 3, Insightful

    That's very interesting policy. Instead to give second class service to your customers, you give them - none.

    Which in turn provides first class metrics applauded by upper management.

    --
    Life is not for the lazy.