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Many Antivirus Tools Fail in LinuxWorld Test

Posted by CowboyNeal on Thu Aug 09, 2007 07:41 PM
from the survival-of-the-fittest dept.
talkinsecurity writes "In a public, side-by-side test conducted last night at LinuxWorld, ten antivirus products were confronted with 25 known viruses. The results were surprisingly disparate. Only three of the products caught all of the viruses; three only caught 61 percent, and one caught an abysmal 6 percent. The test, which wasn't particularly complicated, proves that there still are wide differences in the effectiveness of AV tools. A lot of people think all AV tools are the same — they're not!"
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  • The winners: (Score:5, Informative)

    by RichPowers (998637) on Thursday August 09 2007, @07:48PM (#20177373)
    From TFA:

    Kaspersky, Symantec, and Clam AV: 100% caught

    FProt and Sophos: 94%

    McAfee: 89%

    GlobalHauri, Fortinet, and SonicWall: 61%

    WatchGuard's Linux AV: 6%

    And a graph of the results plus links to some of the test viruses: http://virus.untangle.com/ [untangle.com]
    • Re:The winners: (Score:5, Interesting)

      by alx5000 (896642) * <alx5000.alx5000@net> on Thursday August 09 2007, @07:51PM (#20177397) Homepage
      What's even funnier:

      WatchGuard disputes the test results, stating that it uses ClamAV -- one of the products that caught all of the viruses -- in its own product. "We don't see how the results could be valid -- our product uses ClamAV," a spokesman says.
      • by careykohl (682513) on Thursday August 09 2007, @09:06PM (#20177975)
        Well then, all WatchGuard needs to do now is back it up with some source code showing how they managed to fuck it up so bad it misses 94% of the viruses now.
      • Re:The winners: (Score:4, Interesting)

        by flu1d (664635) on Thursday August 09 2007, @09:54PM (#20178263) Homepage
        I guess that really all depends if they're using ClamAV's definition updates or not. The anti-virus engine is useless without a good list of definitions. ClamAV is pretty sweet due to the fact that you can create your own definition for a 0 day and submit it back to ClamAV while using the new definition.
    • Re:The winners: (Score:5, Insightful)

      by Anonymous Coward on Thursday August 09 2007, @07:52PM (#20177405)
      I must have missed something. How, with 25 different viruses can one catch 6%? My math skillz tell me that it should be divisible by 4.
      • by Anonymous Coward on Thursday August 09 2007, @07:57PM (#20177429)
        Duh, it detected a virus and a half! Do I have to explain everything to you??
      • by quadra23 (786171) on Thursday August 09 2007, @10:51PM (#20178607) Journal
        One product, WatchGuard's Linux AV tool, caught fewer than 6 percent of the viruses sent to it. "We're not exactly sure what the problem with WatchGuard is," says Morris. "The test was set up the same way for all of the vendors."

        This number quoted by the original poster missed the section in bold, it was technically < 6%, which could mean either 0 or 1 virus (funny how everything always works out to binary in some way or another :). My question would be which is it? Either way, my system would be compromised by either 24 or 25 viruses -- neither of which is a good scenario especially in regards to well-known viruses (according to the article no 0-day exploits were accepted).
        • "Either way, my system would be compromised by either 24 or 25 viruses..."

          24 or 25 out of 25?

          Hmmm....

          Does mean that *nix is finally ready for the desktop?..Just like Windows?

          Uhmm..w00t!?!?

          Disclaimer: coming to you from a Feisty Kubuntu PC that is running ClamAV.
      • Re: (Score:3, Informative)

        How, with 25 different viruses can one catch 6%?

        Because the test set was 18, and not 25 as reported. 100/18=5.555. Have a look at the test results [untangle.com].

        -- Steve

    • AVG (Score:4, Informative)

      by DigiShaman (671371) on Thursday August 09 2007, @07:54PM (#20177411) Homepage
      What about AVG? I really love it. I've installed on both my workstations and a server (Windows). It uses minimal resources, it's fast, and it's managed to catch more stuff then Trend Micro, Symantec and McAfee.

      Also, Bitdefender and Nod32 are also good for the Windows enviroment. I'm curious to how all these ranked in the Linux world.
      • Re:AVG (Score:5, Informative)

        by Southpaw018 (793465) * on Thursday August 09 2007, @08:16PM (#20177583) Journal
        They left out Eset NOD32 as well. Symantec and McAffee are the AV old guard: still strong, but also bloated, slow, and weakening. And they have the occasional health problems.

        Kaspersky and Eset seem to be the two main up and comers, and they left one out!
          • Re: (Score:3, Informative)

            NOD32 Antivirus for File Servers runs seamlessly on all mainstream Linux distributions (RedHat, Mandrake, SuSE, Debian and others) and FreeBSD. The small footprint and fast performance makes NOD32 optimally suited for real-time or on-demand protection of your Unix File System Servers.


            http://www.eset.com/products/linux.php [eset.com]
            • Well, my bad...

              In that case, I have two things ro wonder about:
              1. Why wasn't it included in the test? and
              2. WTF was my original post moderated Funny for?

      • Re:AVG (Score:4, Informative)

        by Kymermosst (33885) on Thursday August 09 2007, @08:25PM (#20177659) Journal
        What about AVG? I really love it. I've installed on both my workstations and a server (Windows). It uses minimal resources, it's fast, and it's managed to catch more stuff then Trend Micro, Symantec and McAfee.

        Also, Bitdefender and Nod32 are also good for the Windows enviroment. I'm curious to how all these ranked in the Linux world.


        Test them yourself. The virus samples they used are found here [untangle.com].
      • Re:AVG (Score:4, Informative)

        by omeomi (675045) on Thursday August 09 2007, @08:49PM (#20177855) Homepage
        I've had good experiences with AVG. Unfortunately, on the rare occasions that I have had to deal with a virus, I've had to go through just about every single virus scanner that I can find before I'm able to completely eliminate the virus. Last time around, AVG was the one that correctly identified the virus, allowing me to find some special utility that somebody had written specifically to delete that particular virus. I think it was still a fairly new virus, which might explain why the major brands weren't able to clean my system, but I've been somewhat surprised in the past that it's so difficult to remove a virus/worm with commercial virus scanners.
        • Re:AVG (Score:4, Informative)

          by Feyr (449684) on Thursday August 09 2007, @10:23PM (#20178417) Journal
          my experience mirrors yours. based on many dozens of PCs running AVG: it's excellent at detection but once a virus does get past it you're fucked
        • Is viruses can be a bitch to remove when the system is online, since the virus can do things to fight the scanner. I see a scanner running on a lice system as preemption, not recovery. You run it to stop the virus before it can cause harm. AVG seems good at that, it seems to notice viruses right away.

          If you want to use a tool like that for recovery, they way to do it is on an offline system. Either take the disk to another computer and set it up as a non-system disk, or build yourself a PE boot disc and cle
        • AVG did the same for me about a month ago. Vundo got on my laptop and it took forever to get rid of the damn thing. It always makes me nervous when the instructions for doing something in Windows point out that "your machine will blue screen after this step but don't worry; that's normal."
    • There were 25 viruses. How does something catch six percent? Eight or four, sure. But six?
  • by pddo (969282) on Thursday August 09 2007, @07:51PM (#20177389)
    are viruses on linux a overflow from WINE?
  • Not much here.

    The story could have shown a list of the tested viruses verses the AV software being tested. A simple table would have conveyed a great deal more information than the druel the fellow wrote. Yes I RTFA and as I said - it is not very informative.
    • druel

      Is that a cross between drivel and drool? Maybe some gruel thrown in for flavor?

    • Re: (Score:3, Informative)

      The story could have shown a list of the tested viruses verses the AV software being tested. A simple table would have conveyed a great deal more information than the druel the fellow wrote. Yes I RTFA and as I said - it is not very informative.

      You RTFA and then sadly don't do any research. Why would they bother to list the tested viruses when provide the actual viruses [untangle.com] (see "Test Set")?

    • by JackieBrown (987087) <dbroome@gmail.com> on Thursday August 09 2007, @10:24PM (#20178423)
      000_eicar.com
      001_eicarcom2.zip
      002_eicar_com.zip
      003_eicar.rar
      004_eicar.zip.bad_extension
      005_eicar_big.zip
      010_18_04_2005.exe
      011_abuselist.zip
      012_fullstory.exe
      013_image.jpg.exe
      014_message.pif
      015_mntrup.exe
      016_patch-6143.zip
      017_photo.pif
      018_q347558.exe
      019_scan_check.jpg.exe
      020_test.zip
      021_The_taxation.zip
      100_8.zip
      101_scan.jpg
      102_Syndony.zip
      103_Update-KB8136
      104_Attachement.scr
      105_image.jpg.exe
      106_Info.exe
      107_Please-confirm-pay
      108_virus_87
      109_virus_88
      110_vvzh.scr
      111_xxx.com
      112_untangle1.zip
      113_untangle21.zip
      114_untangle22.zip
      115_untangle3.zip
      116_untangle4.zip
  • How does i/25 not equal 4*i%? Were some of the 25 viruses half-caught, or one-quarter caught?
    • Re: (Score:3, Insightful)

      thats exactly what I was thinking...how can you have 25 viruses and get anything other than 4%, 8%, 12% etc. The article refers to 6%, 61% and 89%...bizarre - I can only reason that they weighted the severity of each virus.
      • Re:math question (Score:4, Insightful)

        by VirusEqualsVeryYes (981719) on Thursday August 09 2007, @09:06PM (#20177971)
        Additionally, they could have calculated the type of virus (by entry method, severity (as you mentioned), spread method, mode of attack, age, etc.) and weighed their percentages in the wild. It's also possible that the programs perhaps prevented some of the damage of some of the virusus, thus meriting partial credit.

        It's also possible I'm wrong, but either way, the article is omitting some information we're supposed to know.
    • Re:math question (Score:5, Informative)

      by Bibz (849958) <seb2004@hotma[ ]com ['il.' in gap]> on Thursday August 09 2007, @09:21PM (#20178051)
      Because the summary isn't right.

      They used 18 test cases, Watchguard got only one : 1/18 = 5.55%, rounded = 6%

      All from the spreadsheet available at http://virus.untangle.com/ [untangle.com]
  • Odd numbers. (Score:5, Interesting)

    by DerekLyons (302214) <[fairwater] [at] [gmail.com]> on Thursday August 09 2007, @07:56PM (#20177421) Homepage
    Something seems a little strange here. With 25 test cases, and a binary outcome (either the virus was detected or it was not), the %caught should proceed in even step of 4%. There's some number massaging going on somewhere.
     
    Hmm... the Fight Club Website [untangle.com] lists 35 test cases, not 25. It's not clear if there is any overlap between the various test cases. In fact, there's not any discussion of the testing methodology (let alone what precisely was tested) at all. Just "here's our numbers - believe them or infect your own machine and find out for yourself".
     
    Now, while I admire the 'do it yourself' hacker ethos as much as the next guy - this is taking it a bit too far.
  • by eddy (18759) on Thursday August 09 2007, @07:56PM (#20177423) Homepage Journal

    For fun I downloaded an application where I suspected the "keygen" was trojanized. I was correct; the real keygen had been bundled with some, as it would turn out, Off The Shelf trojan. However, I didn't know what trojan so I scanned with F-Secure's online-engine, which didn't detect anything (neither did my active AVG installation). So I sent in the exectuable as a sample, explained what little I had to say; where I found the file, that it was pecompact2'ed, that their online scan didn't detect it. The process of submitting a file req. you to attach the scanner log.

    Got the reply that "The file you submitted was found to be malicious, and is already detected as Trojan-Downloader.Win32.Delf.asz using the latest virus definitions." and "Please update your virus definition databases to properly detect the file".

    Remember, I had scanned it using their latest online scanner and provided the log where the trojan was NOT detected.

    So, maybe an extra warning for online scanning engines.

    PS.
    Shortly after I had submitted the file to f-prot, AVG started detecting it.

      • I purposely downloaded the Bagle virus

        How did I find out it was really Bagel?

        containing Bagle instead of Beagle
        I'm sorry, which is it again?
  • by blind biker (1066130) on Thursday August 09 2007, @07:59PM (#20177451) Journal
    Nice to see opensource programs perform so well, so consistently. I only wish the author(s) maintained the ports and packages himself. The Win32 port seems a bit of an afterthought. Anyway, still a brilliant antivirus program.

    (My other OS favourites include Audacity, CDex, The GIMP and OpenSolaris (you didn't expect that one coming, did you)).
  • We use Sophos on our Linux mail relays and Trend on the desktops, servers and web proxy. We've only had one small virus outbreak in 15 months. I guess Trend isn't covered since there is no Linux client, but it is in the top bracket on every shootout I have seen in the last couple years.
  • Not surprising... (Score:4, Informative)

    by SuperBanana (662181) on Thursday August 09 2007, @08:14PM (#20177579)

    ...considering that most of the antivirus programs were tricked when a new "variant" of one of the worms back around '99 or so. So kids- just insert random whitespace into your worms!

    The change? The line endings in the VBS script changed. It probably wasn't even intentional- some broken mail server probably modified CR's into CRLF's. It sailed right past Trend Micro's email scanner and infected several dozen systems.

    I was the first person to notice why it slipped by, and brought it to the attention of a big-name "security expert" who ran a mailing list which shall go unnamed. He thanked us for the research, passed along my findings to the list, and then promptly went around doing interviews with the press using the first person voice. "I discovered that...", blah blah was what I read the next day.

  • by BearRanger (945122) on Thursday August 09 2007, @08:21PM (#20177627)
    Let me preface this by saying that I work in a Windows free environment. I understand that not everyone has this luxury.

    Am I a bad citizen because I don't scan for Windows viruses on my Linux systems? It's almost like another Microsoft tax--you're expected to degrade your performance to prevent their victims, uh, customers (yeah, that's it) from infecting each other. Those folks need to be responsible for their own safety and not expect the rest of us to do it for them. They could start by holding Microsoft accountable and making other choices at purchasing time. To me, Windows isn't worth the hassle.
    • Re: (Score:3, Insightful)

      Ever consider that every virus infection stopped by anyone, target or not, could cut down on the bandwidth sucked away from all of us by the ever increasing botnets?

      What about infected files that don't originate on your systems but are passed through it? If you send out an infected file, the recipient won't care where you think you got it, or how much you feel that it isn't your problem, you're the one who infected them.

      You can piss and moan about trash on the sidewalk or you can just pick it up.
  • Interesting that SonicWALL only caught 61% compared to McAfee catching 89%. The virus protection on our SonicWALL at work is powered by McAfee.
  • by RootWind (993172) on Thursday August 09 2007, @08:33PM (#20177729)
    Not to knock Clam but there is something odd about these results (Besides the absurdly low testbed). TFA says Clam won two years ago (which meant Untangle would use it), and again now. However, just last May the results from AV-Test.org (a real trusted legitimate source) against a comprehensive testbed put ClamAV near the bottom of the heap: http://www.pcmag.com/article2/0,1895,2135053,00.as p [pcmag.com]
    I can't help but think that Untangle is trying to justify their own choice, rather than have a real test. With a testbed of only 25-35, it is possible to pick a group of malware that can put any AV on top. Even the user submitted malware is suspect, especially when that testset is also so low. ClamAV is great against virus outbreaks, with one of the fastest signature responses, but it has pretty atrocious trojan and zoo detection, since there is not enough man-power to collect and create signatures for less prevalent and non-replicating malware.
    • Re:Zombies (Score:5, Insightful)

      by bmo (77928) on Thursday August 09 2007, @08:26PM (#20177673)
      If you suspect something is evil with your setup, you should go with your gut instincts. You are probably more right than you know.

      You should get away from antivirus. Seriously. I'm going to sound like a salesman, but bear with me a bit.

      Antivirus and anti-malware in general, on Windows machines, closes the barn door after every single horse has bolted. There is _no_ way to be sure your Windows computer is badware/zombieware free. To top this off, it often sucks up incredible amounts of cycles that turn the latest gamer machine into an XT.

      There is something that computer labs and libraries swear by and not at: Faronics' DeepFreeze. What you do is establish a "ground state" for the machine by doing a bare metal install and then installing DeepFreeze. You then have certain areas for data that are unfrozen, but the rest is basically locked up tight.

      Surf by an evil site and get a drive-by install? Laugh maniacally, and reboot. The evil bits are then...gone. The machine has returned to its ground state. To install software permanently, you must "unfreeze" the machine, install your software, and then refreeze. The refreezing can be automatic for the next reboot or specified for a certain number of reboots, like if you were doing a Windows update and have to suffer through the interminable reboots. So it also gives Windows "parental supervision" - even for the 9x machines that don't have the concept of an "administrator" account.

      Evilware in the presence of DeepFreeze is about as sticky as snot to teflon. If you insist on staying with Windows, this will let you sleep at night.

      I swear, Faronics should hire me.

      --
      BMO
      • Re:Zombies (Score:4, Interesting)

        by ozzee (612196) on Thursday August 09 2007, @09:03PM (#20177955)

        I actually do the same kind of thing. Whenever I get a new machine, I snaphot the HDD before I even boot it the first time. Then I run the auto updates from MS and snapshot it again. I then regularly wipe the machine by restoring a snapshot. (It also forces me to keep my data somewhere else that is safe.)

        The only advantage of this over the DeepFreeze thing is that I can unfreeze to multiple prior states.

        I think it should be a standard feature with these 100GB++ notebook drives.

      • Re:Zombies (Score:5, Informative)

        by imemyself (757318) on Thursday August 09 2007, @09:33PM (#20178117)

        There is something that computer labs and libraries swear by and not at: Faronics' DeepFreeze


        Have you ever worked in a tech department that had to support frozen computers? It turns a project that would maybe take fifteen or twenty minutes per lab into something more like and hour long. The school district that I work for used Deep Freeze on most of the desktops at the high school up until about a year or two ago. Taking DF off made it a lot quicker to make minor changes to the computers during the year, and there hasn't been any significant problems. Students and teachers are also happier with it because it prevents stuff that people have saved in My Documents (yes, the kids are told over, and over again to save to their mapped home directories - but occasionally they don't) from being wiped out.

        About the same time as that we also took students out of the Admin group (I'm not exactly sure why they were in there in the first place - no apps have had any problems with it), so that mitigated any significant problems as well. We also have McAfee managed AV and 8e6 web filtering, but AFAIK its fairly rare that any viruses or malware are found on the student computers. The laptops that the teachers have(and have admin rights on) are another story. But they would whine if they couldn't add weatherbug and have five different toolbars in IE. Deep Freeze is really just a crappy way of avoiding the problem instead of dealing with it and fixing it. Students/regular non-admin users should not be able to cause damage to the OS. In a well run environment there shouldn't be tons of problems with malware. Yeah, there is going to be an occasional piece of malware that exploits a security vulnerability that could screw up the system. But it is not that hard to lock down boxes properly, with group policy and using the default Windows groups.
        • Re:Zombies (Score:5, Funny)

          by bmo (77928) on Thursday August 09 2007, @09:57PM (#20178281)
          "Have you ever worked in a tech department that had to support frozen computers?"

          A bit. It's a PITA, but for static setups that don't need touching and subject to "many hands" like in a library, it's not bad. Let's just say that students in a classroom are typically better behaved than many library patrons.

          " Deep Freeze is really just a crappy way of avoiding the problem instead of dealing with it and fixing it."

          Well, I think the problem with that lies elsewhere, probably in a place called Redmond. All this stuff is just patches upon patches to keep Windows from eating itself.

          "But it is not that hard to lock down boxes properly, with group policy and using the default Windows groups."

          Some would say that this should be the default, but "design and marketing decisions" prevent that.

          "But they would whine if they couldn't add weatherbug and have five different toolbars in IE"

          Nnnggghhh.... *puts on BOFH hat* "YOU GET THE POLICY OF DOOM! MUAHAHAHAHAHAH!!!!"

          --
          BMO