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SysInternals Releases RootkitRevealer

Brian writes "In the wake of news that Microsoft is developing prototype software to detect rootkits, SysInternals has released a free rootkit detection tool named RootkitRevealer for all Windows systems NT4+. RootkitRevealer works by "comparing the results of a system scan at the highest level with that at the lowest level," and detects every known rootkit at rootkit.com. They also report that it is impossible to know for sure that a given system is clean from within it, but that defeating their tool would require a level of sophistication not yet seen. You can download RootkitRevealer."

36 of 260 comments (clear)

  1. Strange... by bigtallmofo · · Score: 5, Funny

    Every time I try to go to www.sysinternals.com to find the new Rootkit removal application, my system shuts down automatically.

    Probably nothing to worry about.

    --
    I'm a big tall mofo.
    1. Re:Strange... by SpinJaunt · · Score: 5, Informative
      If you are using Windows XP SP2 or Windows 2003 SP1, you'll need to turn off DEP (Data Execution Prevention) by editing your BOOT.INI and have change from
      /noexecute=optin
      to
      /noexecute=AlwaysOff
      http://msdn.microsoft.com/library/default.asp?url= /library/en-us/ddtools/hh/ddtools/BootIni_aff45176 -bd02-43cf-9895-c212fa392de2.xml.asp I had this problem with Daemon tools and Acohol 120%
      --
      /. is good for you.
    2. Re:Strange... by Anonymous Coward · · Score: 5, Funny

      Yeah, should probably just turn off that buffer overrun protection, don't know what it's good for anyways. Also you should set your administrative password to blank and share out your entire C drive with Everyone granted full control, just to make things easier.

  2. Sysinternals is great by Dr.Opveter · · Score: 5, Informative
    I love their stuff

    No really, they have class utilities for free, thanks Sysinternals

    --
    Sample this!
    1. Re:Sysinternals is great by cnettel · · Score: 4, Insightful
      Agreed.

      One can note that Microsoft is stopping some kinds of hooking of individual kernel functions in the AMD64 release of XP. It's motivated by the fact that it won't break binary compatibility with existing code, as it would be broken anyway, and that it leads to sounder use of the API. It makes some rootkitting harder, and tools like regmon (not filemon, as it can hook as a filesystem filter driver). It doesn't make any of it impossible, though. It should really be noted that some of the low-level tools from sysinternals use very similar techniques to what a rootkit would do, just that they do it for monitoring and not with falsification of data as intent.

  3. Bloated Software Giant Ahead of the Curve Again by Anonymous Coward · · Score: 5, Funny

    Wow. Pop-up blocking, rootkit detection, basic network security... isn't it amazing how an enormous patent library and billions of dollars encourages so much innovation? It's like they're ten years ahead of everyone else.

    Wait... no, the other way around...

    Free Sony PSPs. It's real. It's here.

  4. Rootkit? by Fls'Zen · · Score: 5, Funny

    I didn't think people needed rootkits for windows...

    1. Re:Rootkit? by slavemowgli · · Score: 5, Insightful

      Why not? The purpose of a rootkit is usually not so much to take over a box (trivial on a standard windows installation), but rather to hide the fact that such a take-over occured.

      --
      quidquid latine dictum sit altum videtur.
    2. Re:Rootkit? by Geek+of+Tech · · Score: 3, Funny
      Wouldn't the appearance that the computer hasn't been compromised lead one to become suspicious?

      :P

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      Stop the Slashdot effect! Don't read the articles!
  5. So this is... by JustNiz · · Score: 4, Funny

    >> RootkitRevealer works by "comparing the results of a system scan at the highest level with that at the lowest level,

    So this is a rootkit in itself.

    I don't know that I'd trust Microsoft anymore than anyone else running rootkits on my ststem.

    1. Re:So this is... by interiot · · Score: 3, Informative
      No... Rootkits CHANGE the results of system API calls for everything running on the system, to try to hide the fact that there are suspicious processes and files on your system.

      RootKitRevealer doesn't change any results of API calls at all.

      RootKits are a fairly precisely-defined thing, I don't think there's as much grey area here as you think there is.

  6. handy by diegocgteleline.es · · Score: 5, Insightful

    This will be interesting as soon as spyware starts using rootkits in windows.

    You know, Microsoft is securing (really) XP with the SP2, popups-blockers, restrictions on activex objects....which is great, but Microsoft has allowed a whole industry to grow - the spyware industry. There's lot of money there and they aren't going to stop so easily, they'll try other methods, and the fact that 99% of XP users runs with administrator privileges is too sexy, it allows you to reach the kernel, where you're god and you can bypass spyware/virus programs...(and if today's spyware is very poorly designed and can break your IE eve when they don't really wnat that, guess how systems will start to break if rootkits are started to use....)

    1. Re:handy by arkanes · · Score: 3, Interesting

      Amusingly, large portions of MS software don't qualify for the "Designed for Windows" logo. Office springs immediately to mind - violates the HIG.

    2. Re:handy by stevenbdjr · · Score: 3, Interesting

      I don't know how your system is configured, but on my network all of my users run with non-privledged (read Users) accounts and can run Office 2000, XP, and 2003 just fine.

  7. Looking forward... by Apiakun · · Score: 5, Funny

    defeating their tool would require a level of sophistication not yet seen

    What, until tomorrow?

  8. If you run linux by Apreche · · Score: 5, Informative

    If you run linux you can use chkrootkit

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    The GeekNights podcast is going strong. Listen!
    1. Re:If you run linux by slavemowgli · · Score: 3, Informative

      You don't need to run Linux for chkrootkit. More or less any Un*x or Un*x-like OS will do fine:

      "chkrootkit has been tested on: Linux 2.0.x, 2.2.x, 2.4.x and 2.6.x, FreeBSD 2.2.x, 3.x, 4.x and 5.x, OpenBSD 2.x and 3.x., NetBSD 1.6.x, Solaris 2.5.1, 2.6, 8.0 and 9.0, HP-UX 11, Tru64 and BSDI."

      --
      quidquid latine dictum sit altum videtur.
    2. Re:If you run linux by Taladar · · Score: 4, Informative

      Don't forget to run it from a known-good live-cd, otherwise it won't do you much good since it is just a script that uses several system programs.

  9. Re:A level of sophistication? by johndiii · · Score: 5, Informative

    As the sysinternals article suggests, boot from a known clean CD and do an "off-line" system scan. They make the point that it will never be possible to determine with absolute certainty that a system is clean from inside the system.

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  10. Microsoft BSA by TheFlyingGoat · · Score: 5, Informative

    While you're at it, download the Microsoft Baseline Security Tool. It's not quite the same, but it's an excellent tool for anyone looking to make their Windows box more secure. It can also scan computers on your network (that you have rights on), so you can easily find all the Windows boxes on your network that aren't up to date on their patches, have Guest accounts enabled, or other bad things.

    --
    You have enemies? Good. That means you've stood up for something, sometime in your life. --Winston Churchill
  11. Reputation Counts by Ridgelift · · Score: 5, Insightful

    Mark Russinovich and Bryce Cogswell have been providing invaluable tools for years. Even if Microsoft released a rootkit detection package tomorrow, I would still use sysinternal's over anything Microsoft provides because "there is no anonymous team of programmers or writers behind Sysinternals". They put their name on everything they give away and sell.

    When it comes to trust, people put their names on things they know are trustworthy. I can't count the number of times I've felt betrayed by Microsoft's products not doing what they're supposed to do, only to discover a flaw in their product that they knew about but didn't tell so as not to affect sales. I also can't count the number of times utilities such as NTFS for DOS have saved my butt in the field.

    Way to go Sysinternals.

  12. Paranoid? by DoChEx · · Score: 3, Interesting

    Is it just me or do other people think this is just part of the on going line of propaganda to undermine current technology and make people more open to the idea of Trusted Computing, formally know as Palladium??? I know the current software isn't perfect but you'll never have a completely safe system, so longer as the user operating it has system administrator privileges. Trusted computing or the solution to the above problem is to implement security access that even the owner of the system is deemed untrustworthy.

  13. Incompatible? by gr8_phk · · Score: 4, Insightful
    "It should really be noted that some of the low-level tools from sysinternals use very similar techniques to what a rootkit would do, just that they do it for monitoring and not with falsification of data as intent."

    I can see it now. The future Microsoft product (which might come free with the OS) will say this other tool is a rootkit and remove it. This area of security should be very interesting to watch.

    1. Re:Incompatible? by cnettel · · Score: 3, Interesting

      Possibly. But, what I was talking about is that some sysinternals tools overload/hook certain kernel calls. The system call tables are, IIRC, write protected even from kernel when the kernal has been loaded in the current/coming Win64 editions.

  14. Re:RootKit in windows? by tverbeek · · Score: 4, Funny
    Why are they called rootkits in windows, when the superuser is called "administrator" and not "root"?

    For the same reason trackpads, wireless pointing devices, and such are called "mice", even though they look nothing like a mouse.... why solid state storage devices are called "flash disks" or "flash drives", even though there's nothing flat and circular in them and no moving parts... why the stuff in the middle of pencils is called the "lead", even though it's mostly graphite... why magazines featuring stories told with sequential art are called "comic books", even though they're usually not humorous.

    --
    http://alternatives.rzero.com/
  15. Re:About the software by Anonymous Coward · · Score: 4, Informative

    I don't know anything about rootkits, or this software, is it safe to delete everything it detects or is this for people that know exactly what they are looking for and you only delete a couple of things it finds??

    Short answer - no. It will flag stuff that is hidden from the Native Windows API but not everything that's hidden is bad.

    It's kind of a moot point anyway. If you find that you've been rootkitted you shouldn't try and clean it. You should reach for your original install media and start over.

    Alternatively, take off and nuke the site from orbit. Apparently it's the only way to be sure.

  16. Simple, really by sczimme · · Score: 4, Informative


    Why are they called rootkits in windows, when the superuser is called "administrator" and not "root"?

    The entity/app/device known as a rootkit was first popularized (so to speak) as a way for the intruder to hide his tracks and maintain root access on a Unix machine. If rootkits had first become popular (again, so to speak) on Win32 machines they likely would have been called adminkit or similar.

    In a general techspeak sense, though, (root == full access); most techies have at least a nodding acquaintance with Unix so the idea of root makes sense regardless of the OS in question.

    The cynical part of me would like to mention that in years past there really wasn't much need for rootkits on Win32 machines: if the intruder wanted to keep privileged access it would be relatively simple matter to acquire it again.

    --
    I want to drag this out as long as possible. Bring me my protractor.
  17. Sysinternals.com is a Good site by tristanj · · Score: 5, Informative
    Sysinternals has been around a while. These guys really know their stuff when it comes to Windows operating systems.

    Here are some good tools of their that I use frequently

    Autoruns

    http://www.sysinternals.com/ntw2k/freeware/autorun s.shtml shows a complete list of programs that start up automatically when windows starts. Filemon

    http://www.sysinternals.com/ntw2k/source/filemon.s html Filemon shows all filesystem access, so you can see which files programs are accessing. I have found it very useful in diagnosing software problems and fighting spyware. Regmon

    http://www.sysinternals.com/ntw2k/source/regmon.sh tml Like filemon, but for registry access. Shows keys being read and created. Pagedefrag

    http://www.sysinternals.com/ntw2k/freeware/pagedef rag.shtml Defrags the registry hive (most of the registry is stored on disk but is not typically defragmented by many tools) and paging file. Also many others here

    http://www.sysinternals.com/ntw2k/utilities.shtml

    IMHO any windows admin should have this stuff installed. Many of the utils come with source code.

  18. How do you REMOVE a rootkit? by Eric_Cartman_South_P · · Score: 3, Insightful

    This is good and all, but how do you remove a Rootkit if it finds one?

    1. Re:How do you REMOVE a rootkit? by denis-The-menace · · Score: 4, Informative

      Just use MS SOP to fix 99% of problems: Re-install

      This irony here is that it's what you have to do to be 100% sure that no rootkits exists in ANY OS.

      --
      Obama's legacy: (N)othing (S)ecure (A)nywhere and (T)error (S)imulation (A)dministration
    2. Re:How do you REMOVE a rootkit? by 3.5+stripes · · Score: 3, Funny

      Format c:

      --


      He tried to kill me with a forklift!
  19. For the Average User, Worthless by TheDoctorWho · · Score: 3, Interesting

    For the hacker, priceless. This really accomplishes so little. Sure, here are your 'descreprancies', but they might not be that at all. Mostly Pointless. A good step, but only something the hackers will get control of well before this becomes mainstream.

  20. Re:Like a partition? by Geek+of+Tech · · Score: 3, Interesting
    Nah. I'm waiting for one that converts the filesystem to an encrypted filesystem of its own, and makes all disk access go through itself first.

    No way will it let you remove itself. If you boot off of some sort of safe media and delete the thing, the computer no longer has the ability to read any of its data.

    Yeah, I know I messed up the jargon, but I'm sure I'll be corrected on that. :P

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    Stop the Slashdot effect! Don't read the articles!
  21. Re:Better solution. (mod parent up!) by cypherz · · Score: 3, Interesting

    VMware is a very good way to neuter Windows and minimize some of its bad behavior. I've been beating the crap out of my windows development environment for two years straight with no re-installs of windows. My windows environment is hosted by SuSE Linux. I have reverted to a snapshot a couple of times, at a cost of a couple of minutes of downtime. Saving the original install off to somewhere safe is easy (just copy the virtual machine's directory somewhere else).

    --
    This sig kills fascists.
  22. Re:my office pc is infected = howto remove? by erlenic · · Score: 4, Informative
    The only way to remove a root kit is to format the drive and reinstall the OS. Have fun!

    Seriously though, at least two of those are listed in the article as being fine. Looking over the list, I don't see anything suspicious, and I have many of the same things listed for my system. Although if I'm reading that third line right, you have 9 GBs of bad clusters. You might want to scandisk.

  23. Your system is fine... by Leadhyena · · Score: 5, Informative
    There is nothing wrong with your system. In the .chm file provided with the RootkitRevealer it explains:
    Hidden from Windows API discrepancies are the ones exhibited by most rootkits, however you should expect to see a number of such entries on any NTFS volume since NTFS hides its metada files, such as $MFT and $Secure, from the Windows API. In addition, there are a number of Registry keys that are inaccessible from the Windows API and will report as access-denied discrepancies.
    This explains all of the listed entries except for the last one(the $BADCLUS entry is due to missing clusters, like the previous poster said, and you need to do a scandisk). Your last entry is there because you had Firefox open when you ran the scan. Again from the help file:
    Files or Registry data created after a scan starts will also show up as discrepancies, so run RootkitRevealer on an idle system.
    You're fine, although your reaction will be similar to many other users who will see the same thing and freak out similarly, because they don't understand NT internals... I think this is not a good tool to release to the masses, and should only be used by sysadmins, just like how HijackThis is really good for detecting spyware, but only to someone who knows something about Windows systems.

    Not to mention that if you have a rootkit installed, you better be prepared to wipe your system clean and reinstall the OS, because otherwise there's no way of knowing if you have the whole thing removed.