trojan

Discussion in 'macOS' started by legalgrl, Mar 16, 2010.

  1. legalgrl macrumors newbie

    Joined:
    Mar 16, 2010
    #1
    i posted on another mac forum, which i am sure some of you are also members of. i was told that mac does not have any viruses out there, but i just don't understand why my norton antivirus would then find a virus and quarantine it. it has to be something. it can't be nothing at all?

    my safari froze and then i couldn't get back online even though i had an interet connection. it was very unusual and suspicious. once i cleared the cache and reset safari, i was able to get back on. however, i would get random failed pages trying to tell me i wasn't connected to the internet. then after refreshing, it loaded.

    i ran a norton antivirus scan tonight after having the problem and it found a trojan byteverify (i think). it was very quick and once i told it to fix it, it quarantined it, but i am almost positive that is what it said.

    norton quarantined the file. it was in my library cache - in the java and is a zip file. the name of the file is user/library/cache/javapil/v1.0/jar/gsb50.jar - 112aa26 - 46386e8.zip. all norton says in the quarantine folder is that it is a file and is infected.

    i did a second scan and it says there are no viruses found. however, the scan is unusually fast. (which happened to me on a pc that had a trojan virus i could not remove).

    i also scanned with macscan and it says there is no spyware.

    i was just wondering how to know if the virus or malware is completely gone. i have seen debates between some people who say macs cannot get viruses and then others who say they can. i just know the computer was acting weird and then norton found the trojan, so it just seems strange to me.

    thank-you for any help you can provide. a couple of you may have helped me already and i really appreciate it. i am just confused about this whole thing. again, thanks so much!
     
  2. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #2
    If it's a virus, it's a Windows virus, which can't run on Mac OS X and would have no effect on your system. Mac virus scanners detect Windows viruses, to help prevent you from sending them to PCs.
     
  3. spinnerlys Guest

    spinnerlys

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    forlod bygningen
    #3
    Mac OS X can get viruses, all of them if they want, but NO (0, nada, zero) have any effect on them.

    There are some trojans and other malware though, which you have to install manually and enter your password to do so.

    It's a Windows trojan btw, which will not affect your Mac OS X system.
    http://www.symantec.com/security_response/writeup.jsp?docid=2003-090514-4048-99
    http://macosx.com/forums/mac-os-x-s...byteverify-infects-installerapplet-class.html

    The AV software scans only for known viruses and other malware and as almost all viruses are made for Windows, they will find Windows viruses.
     
  4. legalgrl thread starter macrumors newbie

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    Mar 16, 2010
    #4
    thank-you very very much for the help guys!

    if someone accidentally installs malware to the mac, are there certain file names to look for? would an anti-virus pick it up? how do you know if it is a mac walware or a virus restricted to windows?

    one more question... now that this virus is in quarantine, can i pass it to windows through an external hardrive or to friends through e-mail of files or is it quarantined and out of the way?

    thanks again! trying to learn about the mac operating system!
     
  5. Angra-mainju macrumors regular

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    Mar 18, 2009
    Location:
    UK
    #5
    so are you saying that i don't need to have any anti virus software?
     
  6. spinnerlys Guest

    spinnerlys

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    #6
    Yes, as there are currently no known and published Mac OS X viruses.

    As said before (here and in many, many, many, ..., many other threads), the AV software scans only for known threats, and thus looks mostly for Windows threats.

    Unless you have friends, colleagues or family members who use Windows and don't have AV software on their computers and you exchange files with them a lot and you feel responsible for the well being of the computers of other people, there is really no need to have AV software clog down YOUR system.
     
  7. Angra-mainju macrumors regular

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    #7

    aye thanks mate, This iAntiVirus was a pain in the arse, thx again
     
  8. domdodo macrumors newbie

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    Mar 16, 2010
    #8
  9. Hmac macrumors 68020

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    #9
    I've never run anti-virus software on any Mac I've ever owned since my old Macintosh SE-30.
     
  10. angelwatt Moderator emeritus

    angelwatt

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    #10
    I've known plenty of Windows users that have said they've never run anti-virus software either. It doesn't mean they didn't have viruses, but without the software, how would they know they're there? The same is true for Macs. Unless you have software to detect them, how do you know you're clean?

    And virus software detects more than just viruses (most software), they also check for trojans and malware.
     
  11. ARF900 macrumors 65816

    ARF900

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    Oct 30, 2009
    #11
    Its a windows virus, as said above it cant hurt but its still there. Arent you glad you arent using a PC?

    Also macs are not totally invincible, you cant get a virus from web surfing however if you download and install an app that has a virus on it and give it permission to execute it could harm your system. So you should always download apps from the developer website.
     
  12. T002Tyrant macrumors newbie

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    Mar 16, 2010
    #12
    Hey guys, I'm having similar problems, I can't connect to the internet even when it says I'm connected, all other machines can connect. My mac starts acting very weird when I connect to the wireless, the OS starts freezing and if it doesn't freeze whenever I right click it relaunches the finder. Think we may have the same problem!:eek:
     
  13. Hmac macrumors 68020

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    Midwest USA
    #13
    Uh huh. What viruses do you think can be found on Macs? Please name one...

    (not talking trojans or worms that require I be dumb enough to click on an unknown link and install such malware out of ignorance).
     
  14. angelwatt Moderator emeritus

    angelwatt

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    #14
    As I said in my post you quoted, anti-virus software detects more than just viruses.
     
  15. MisterMe macrumors G4

    MisterMe

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    #15
    No, it is not the same with Macs. A Windows user without antivirus software is a blissfully ignorant victim of numerous infections. A Mac user without antivirus software may be blissfully ignorant, but the Mac user is also not a victim of any infections.
     
  16. angelwatt Moderator emeritus

    angelwatt

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    #16
    It's the same in that you don't know if you're infected or not unless you have software to do the detection. How many infections is irrelevant.
     
  17. roadbloc macrumors G3

    roadbloc

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    Aug 24, 2009
    Location:
    UK
    #17
    The great mac virus's debate emerges again. :rolleyes:

    On Windows, without an anti-virus, I got plenty of virus related problems.
    On Mac, without an anti virus, I am fine.

    I think we all know the winner here.
     
  18. T002Tyrant macrumors newbie

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    Mar 16, 2010
    #18
    Still what the hell is happening to our macs? It just seems a bit weird that I'm getting similar problems
     
  19. hakuryuu macrumors 6502

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    Sep 30, 2007
    Location:
    Lomita, CA
    #19
    I run anti virus. I have it scan my downloads, mail downloads, and mail folders. This is partially because I deal with windows computers all the time and I figure it is best to do my part to stop the spread. I also do it because eventually there will be a mac virus or something that I would like to protect against.

    use Clam Xav. http://www.clamxav.com/

    Lightweight and doesn't interfere. And does catch stuff.
     
  20. Gregg2 macrumors 603

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    May 22, 2008
    Location:
    Milwaukee, WI
    #20
    If you want to be ready for the first Mac virus to be unleashed, that can be considered prudent by any reasonable user. But, the way you know there aren't any on your Mac now is that none exist.
     
  21. angelwatt Moderator emeritus

    angelwatt

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    #21
    As I've already stated, anti-virus software detects more than viruses, it detects trojans and malware, and trojans do exist on OSX.
     
  22. MisterMe macrumors G4

    MisterMe

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    #22
    You may scream all you want. You cannot change the facts.
     
  23. Gregg2 macrumors 603

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    May 22, 2008
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    Milwaukee, WI
    #23
    Fine. But that has absolutely nothing whatever to do with what my post focused on. Saying it again doesn't make it more true that it already was.
     
  24. angelwatt Moderator emeritus

    angelwatt

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    #24
    Uppercase words are screaming, not bold. I used bold because you seem to have reading problems, so I was highlighting the important piece for you.

    It does have to do with what you said, because trojans do exist on Macs. I've never once said there's any viruses. You just seem to focus on virus, while I'm focusing on malicious file types.
     
  25. aristobrat macrumors G4

    Joined:
    Oct 14, 2005
    #25
    True, in an academic sense. In a practical sense, it's extremely unlikely that a Mac AV will find a Mac trojan on a computer.
     

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