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Conficker Worm Asks For Instructions, Gets Update

KingofGnG writes "Conficker/Downup/Downadup/Kido malware, that according to Symantec 'is, to date, one of the most complex worms in the history of malicious code,' has been updated and this time for real. The new variant, dubbed W32.Downadup.C, adds new features to malware code and makes the threat even more dangerous and worrisome than before."

18 of 285 comments (clear)

  1. Re:Nitpick... by _Sprocket_ · · Score: 3, Informative

    Maybe I'm being picky here, but why does Slashdot's icon for this story depict a caterpillar? Don't the editors know the difference between a caterpillar and a worm?

    It's an inchworm.

  2. Re:Who care? by Lostlander · · Score: 3, Informative

    [quote]The worm targets Apache Web server installations [/quote]
    Apache while an important application is NOT Linux.

  3. Re:Dumbasses by Urd.Yggdrasil · · Score: 5, Informative

    Uhh, what? I have no idea what this "JPG exploit" your talking about is. Conflicker spreads through the MS08-067 RPC vulnerability, removable media, and shared folders; nothing to do with IE or jpegs.

  4. Re:why couldn't the instructions come from whiteha by patro · · Score: 5, Informative

    The worm probably uses encyption, so it doesn't just accept any control message from unknown sources.

  5. Re:why couldn't the instructions come from whiteha by Thelasko · · Score: 5, Informative

    why couldn't someone write an update telling conficker to cease operation and uninstall itself?

    Because that would be illegal.

    --
    One of our competitors trademarked the term "hypothesis". From now on, we will call them "boneheaded ideas".
  6. Re:Dumbasses by Jamie's+Nightmare · · Score: 2, Informative

    Internet Explorer still has the JPG exploit unresolved.

    You would be right, except for this patch that was released in 2004 shows that you aren't.

    --
    "When you see a unixer brainwashed beyond saving, kick him out of the door." - Xah Lee
  7. Re:Dumbasses by truthsearch · · Score: 4, Informative

    It takes about two hours at most to do it from scratch on one system image, then you can reimage as many computers that come up with the problem.

    Except new holes and malware will keep appearing and the process will need to be done over and over. Add it all up and it's a lot of hours. In the long run it might be cheaper to switch OSs and retrain if that new OS is generally more secure and easier to harden up front.

  8. Re:Dumbasses by Deanalator · · Score: 2, Informative

    Hahaha then too,
    but my guess is that spazztastic is referring to ms09-002

    http://milw0rm.com/video/watch.php?id=96

  9. Re:What I want to see in worm development by Tony+Hoyle · · Score: 2, Informative

    Actually they do. The humans panicked and tried to switch it off. It retaliated in the only way it could.

    Basically it's pissed off because the humans tried to kill it.

  10. Re:UAC doesn't hold a candle to linux permissions by Hurricane78 · · Score: 2, Informative

    I once used Windows XP in that mode. Where everything and its dog was locked down by the ACLs. It was pretty nice to know that a virus could really only frag my (backuped) user account. But it was a pain in the ass for configuration and installation. Mostly because the programs were not made for it. They did not expect something to be locked down at all. Even internal Microsoft programs. So you very often got crashing programs and the like, because they hiccuped on a non-accessible resource.

    But then I realized that security holes of software that was too tightly integrated with the OS, made the whole thing useless.

    Luckily I now use virtualization, and as my sig says:

    --
    Any sufficiently advanced intelligence is indistinguishable from stupidity.
  11. Re:why couldn't the instructions come from whiteha by krappie · · Score: 4, Informative

    F-secure was one of the first people I'm aware of to register some of the domain names that infected machines try to contact. When people were asking this question, this was their response.

    On a regular day, our sinkhole sees around 1.5M-2M unique IP addresses that are infected with a various catering of malware: viruses, trojans, bots, worms and so on. Downadup.B is responsible for about 1M-1.3M of those IP addresses. So let me explain what we do with the data first:
    We try to contact the ISP's where the infected IP addresses are coming from and try to get them to notify the customers to take down the infected systems. We also notify various CERT organisations in the countries where the infections are and work with them to get the infected machines offline. We also share some the data with Law Enforcement organizations in those cases where the author of the malware is known. This allows the police to get their hands on real, raw, data on the amount of infections. That data can later be used in court as evidence to get reasonable convictions.

    Now, why won't we automatically disinfect the machines? The reason is simple: we would be knowingly, and with intent, be accessing the infected computer and giving it commands without having a prior permission from the owner. In most countries that equals to unlawful access which gets you an appointment in court. Some laws do weigh things by judging "a greater good", but in this case it does not help. Imagine the world being a huge porcelain store, inside a black box with only two holes for your hands allowing access. You can put your hands in the box but can't see what you're doing. Now, try to remove all the dust without breaking anything...

    There are several things that might go wrong and the consequences could be severe. Imagine if we, while disinfecting, would knock out life support systems in hospitals. Or radar systems in major airfields. Or traffic lights in a major city. Or any other of imaginable and unimaginable scenarios that would be bound to happen taking into consideration the scale of this thing.

    And it doesn't matter where we offered the disinfection from. We are a corporation with presence in various countries. The disinfected victims would be in those countries, suing us there. The place where we caused the damage from does not matter, its the place where the damage happened.

    To make automatic, remote, unwilling disinfection ever possible there is a need for an international treaty. And an internation body of authority that will decide what to disinfect, who to disinfect and when to disinfect. And unfortunately I don't see that one coming in near future. I wouldn't bet foreign militaries or intelligence organizations being too happy about anyone tampering with their systems, regardless of the intent.

    We've had long talks about remotely disinfecting machines and everyone in here is in unanimous vote on not doing it for the above reasons. And don't think it's a happy moment seeing hundreds of thousands, or millions, of machines being infected. Still, we do our best to get them fixed.

  12. Re:UAC doesn't hold a candle to linux permissions by icannotthinkofaname · · Score: 2, Informative

    That said, UAC is a lot like requiring sudo without a password, except that in theory, a user process can't automatically click "ok" for you.

    Actually, according to what I've read (though I've never tried it), you can set UAC to require a password input.

    --
    Let q be a radix > 1. I am in ur base-q, killing 10 d00ds.
  13. Re:What I want to see in worm development by jpmorgan · · Score: 2, Informative

    It was explained in T2.

  14. Re:Who care? by node+3 · · Score: 4, Informative

    Apache while an important application is NOT Linux.

    Very few Windows viruses attack the Windows kernel.

    Linux, the kernel, is one thing, and immune to an Apache exploit. Linux, the OS, generally includes Apache.

  15. Re:Infectees = Morons by raddan · · Score: 2, Informative

    It's not that simple in a corporate environment (i.e., LAN). We do packet filtering and proxy at our ingress and egress points, we stay up-to-date with patches (WSUS), and AV (ESET), and we've disabled a number of unnecessary Windows services, but still, occasionally infections get through. Sometimes this is because a consultant or freelancer walks through the door and plugs into our network; sometimes it's because a laptop user brings something back with them. Sometimes, yes, it's our own users who are stupid, and the defenses we have in place do not catch them. So far, we've been able to limit damage, but as for stopping it completely-- this has been hard to achieve. As far as we can tell, the only way to accomplish this is to ditch Windows.

    Besides, if you don't run AV, how do you know you don't have something? Do you trawl your firewall logs daily? At the moment, Conficker is pretty much just sitting there, waiting to do something. You might not even know you have it.

  16. Re:UAC doesn't hold a candle to linux permissions by icannotthinkofaname · · Score: 2, Informative

    Yes, someone else pointed out that UAC requests a password if you aren't an administrator--which is, of course, correct.

    It's not even non-admin users that I'm talking about. You can apparently require the password to be entered on UAC prompt, even for an Admin account. Ooh, let me go find it....

    http://en.wikipedia.org/wiki/User_Account_Control#Features

    From that link:

    There are a number of configurable UAC settings. It is possible to:[10]

            * Require administrators to re-enter their password for heightened security;
            * Require the user to press Ctrl+Alt+Del as part of the authentication process for heightened security;
            * Disable Admin Approval Mode (UAC prompts for administrators) entirely;

    (emphasis added)

    In theory, your WinSudo could have the same level of protection as a sudo command prefix, based on what I read here.

    Again, though, like I said, I haven't actually messed with UAC settings before in Vista. I could be mistaken, because the Internet isn't perfect.

    --
    Let q be a radix > 1. I am in ur base-q, killing 10 d00ds.
  17. I know you aren't suggesting this is real... by Anonymous Coward · · Score: 1, Informative

    The module is named downadup.c not downandup.c, so unless you are suggesting the virus writers are PC, get a clue!