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Trojan Using Sony DRM Rootkit Spotted

Analise writes "The Register reports on the first trojan using Sony's DRM rootkit. A newly discovered variant of the Breplibot trojan makes use of the way Sony's rootkit masks files whose filenames begin with '$sys$'. This means that any files renamed this way by the trojan are effectively invisible to the average user. The malware is distributed via an email supposedly from a reputable business magazing requesting that the businessperson verify his/her attached 'picture' to be used for an upcoming issue. Once the payload is executed, the trojan then installs an IRC backdoor on affected Windows systems."

10 of 597 comments (clear)

  1. Boycott Sony by Winckle · · Score: 5, Interesting

    I reccomend voting with our wallets, and not purchasing Sony/BMG products. Also see here

    Also here is the company that created the DRM technology.

  2. Really easy test to see if you're vulnerable by HMC+CS+Major · · Score: 5, Interesting

    Since there was some confusion about how you can tell if this rootkit is installed, remember that it hides files beginning with '$sys$' -

    1) If you're not using windows, you're fine.
    2) Create a file on your desktop ('test.txt' should be fine). Rename the file to '$sys$test.txt'.

    If the file is gone, you're vulnerable.

  3. Back again to Windows Security by Tibor+the+Hun · · Score: 5, Interesting

    Can anyone explain if this rootkit prompts for a password when installing (during the autorun, I presume)

    As an OS X user, I'd find it slightly odd that my music CD is prompting me for an administrative password.

    But to stay on topic, I'm sure this is but one of the many exploits that will be based on this rootkit.
    Does anyone have a comprehensive list of CDs that install it, and is it true that Sony has been using it since April?

    --
    If you don't know what AltaVista is (was), get off my lawn.
    1. Re:Back again to Windows Security by NSObject · · Score: 5, Interesting
      It looks like there's an OS X version as well, but from a different source. Here's a reader comment from macintouch.com...

      Darren Dittrich followed up on the discovery that Sony was playing a dirty trick on its customers, secretly installing a malware-style "root kit" on their computers via audio CDs:

      I recently purchased Imogen Heap's new CD (Speak for Yourself), an RCA Victor release, but with distribution credited to Sony/BMG. Reading recent reports of a Sony rootkit, I decided to poke around. In addition to the standard volume for AIFF files, there's a smaller extra partition for "enhanced" content. I was surprised to find a "Start.app" Mac application in addition to the expected Windows-related files. Running this app brings up a long legal agreement, clicking Continue prompts you for your username/password (uh-oh!), and then promptly exits. Digging around a bit, I find that Start.app actually installs 2 files: PhoenixNub1.kext and PhoenixNub12.kext.

      Personally, I'm not a big fan of anyone installing kernel extensions on my Mac. In Sony's defense, upon closer reading of the EULA, they essentially tell you that they will be installing software. Also, this is apparently not the same technology used in the recent Windows rootkits (made by XCP), but rather a DRM codebase developed by SunnComm, who promotes their Mac-aware DRM technology on their site.
  4. Infected with DRM by saskboy · · Score: 4, Interesting

    Here's the Slashdot crowd's chance to get the phrase invented by a Slashdotter out in the public eye. It's important that the public learn that DRM is a bad thing, and this is simply one way to tell them plainly how it is bad. DRM breaks their computer, or makes their life more difficult.

    "Infected with DRM"
            Sony's rootkit has also been linked to Windows crashes, which isn't surprising to me. Most spyware causes instability in Windows because it is poorly written and designed to break parts of Windows to protect itself from removal. Sony writes, "This component is not malicious and does not compromise security. However to alleviate any concerns that users may have about the program posing potential security vulnerabilities, this update has been released to enable users to remove this component from their computers."
    The incongruence of their words, is not startling to me, as they are playing a PR game to hide the fact that they messed up people's computers, and made them vulnerable to an attack that hasn't gained popularity yet, but now surely will. Virus writers will be able to easily hide their virus files using programs like Sony's cloaking DRM. Sony is lying that their cloaking DRM does not compromise security of an infected computer.
    http://www.informationweek.com/story/showArticle.j html?articleID=173601122

    --
    Saskboy's blog is good. 9 out of 10 dentists agree.
  5. Re:Jobseekers rejoice! by Lemmy+Caution · · Score: 4, Interesting

    Eh, that's a little "I was only following orders" for my blood.

    If I'm working for a homicidal maniac and I build a gun for him, I'm not innocent when he goes on a rampage.

    Werner Heisenberg claims that he sabotaged the Nazi atomic bomb effort. If that's true, this would have been a very different world if he had just decided to be a "good engineer." (Yes, Godwin, blah blah. I don't think it applies.)

  6. A variant of that trojan ... by Anonymous Coward · · Score: 5, Interesting

    The sales manager at the company I work for recently received a variant of this worm, and after finding that the attachment "didn't do anything" forwarded it on to me to find out why. I extracted the attachment and analysed it in IDA and discovered that it connected to one of two IRC servers and joined a specific channel.

    So posing as the trojan I logged onto the IRC channel. I idled there for a while watching the channel op send commands to the connected bots, and decided to have a go myself. The channel was +m but I could PRIVMSG the bots, and a bit more work in IDA revealed the command set - which contained an unload command. So I scripted my irc client to send a msg to every non-op in the channel with the command .. suddenly they all quit and the room was empty except for me and the op.

    "OH SHIT" he typed. He was more shocked than anything, and then more curious than angry. We ended up having a rather long and interesting conversation about our respective jobs. He told about his bot network, what he uses them for (in the UK it's for harvesting email addresses, apparently), the ££ he gets for it - it's a full time job for him - and who writes most of the bot software (his partner.) He was no stereotypical teenage script kiddie either, more a computer professional turned to the 'dark side' of IT .. I felt quite akin to him in many ways.

    All in all, it was fascinating. (Btw, our firewall blocked the trojan from connecting to IRC and it was fairly easily to remove from the sales manager's laptop)

  7. antivirus vendors violate DMCA? by jimbro2k · · Score: 5, Interesting

    IF antivirus vendors do start removing the sony rootkit, won't that qualify as circumvention of a copyright device and put them in clear violation of the DMCA? This just keeps getting better and better.

    --
    There is not nearly enough love in the world, but there is far too much trust.
    1. Re:antivirus vendors violate DMCA? by PhoenixPath · · Score: 4, Interesting

      McAfee is the first. Detects, removes, *and* prevents re-installation.

      See below:

      http://www.betanews.com/article/Antivirus_Firms_Ta ke_On_Sony_DRM/1131641594

  8. Remember Intuit's TurboTax debacle? by sizzzzlerz · · Score: 5, Interesting
    Several years ago, Intuit infested your computer with their own DRM software when you installed their TurboTax software. Of course, the packaging said nothing about it but once it was discovered, the shit hit the fan. They first denied doing anything wrong, then when forced to admit that presence of this software, they insisted it did no harm to the owner's computer. Once again, their logic was that all buyers of the software were thieves and this was protecting their I.P.. Finally, when sales of the product dropped sufficiently, they provided a mechanism to remove said-DRM software, however, TurboTax would no longer run.

    The following year, all traces of this were removed in the next version and, afaik, it has never returned. I, for one, however, haven't bought their product since and don't plan to ever buy from them again.

    I guess Sony just wasn't paying attention.