Malware Virus on MacBook Pro ?

Discussion in 'MacBook Pro' started by shopsmart99, Mar 27, 2013.

  1. shopsmart99 macrumors member

    Mar 14, 2010
    I recently visited a few shady websites and my Macbook has
    slowed down alot, i have a feeling i might have gotten some
    kind of virus or browser crap installed without my knowledge....

    Is there a way to scan my Macbook Pro and detect if there
    is any **** on there ??


    ps. also i was using a Hide My Ass VPN , that might have done something...
  2. GGJstudios macrumors Westmere


    May 16, 2008
    Macs are not immune to malware, but no true viruses exist in the wild that can run on Mac OS X, and there never have been any since it was released over 10 years ago. The only malware in the wild that can affect Mac OS X is a handful of trojans, which can be easily avoided by practicing safe computing (see below).

    3rd party antivirus apps are not necessary to keep a Mac malware-free, as long as a user practices safe computing, as described in the following link. Read the What security steps should I take? section of the Mac Virus/Malware FAQ for tips on practicing safe computing.

    If you still want to run antivirus for some reason, ClamXav (which is free) is one of the best choices, since it isn't a resource hog, detects both Mac and Windows malware and doesn't run with elevated privileges. You can run scans when you choose, rather than leaving it running all the time, slowing your system.

    Your performance issues are most likely not caused by any form of malware.
    Generally speaking, Flash content on websites is notorious for consuming system resources, slowing performance, raising temps and decreasing battery life. For Flash-related issues:
    • Find your Flash version and make sure it's the latest version available. Never install or update Flash from a pop-up on a website. Always go to Adobe's site to get Flash or updates.
    • Install ClickToFlash (Safari), Flashblock (Firefox) or FlashBlock (Chrome) to control which Flash content plays on websites.
    • Install ClickToPlugin (Safari) to prevent Safari from launching plug-ins automatically, resulting in faster browsing, reduced fan usage, and increased battery life. It can also replace many plug-in-based media players with Safari’s native HTML5 media player.
    • Try using the YouTube HTML5 Video Player to watch YouTube videos, when available. (May impact fullscreen viewing. See link for details.) Some have reported better performance with HTML5, while some have reported worse. Try it and find out what works best for you.

    If you're having performance issues, this may help:
  3. Queen6 macrumors 604


    Dec 11, 2008
    Land of the Unexpected
    ClamXav for virus and malware, LittleSnitch will show you exactly what is being sent out of your Mac.

    Virus & Malware - Same question, same rhetoric;

    There are several reasons to run antivirus/malware on OS X especially if you are dealing with a mixed environment passing on malicious code even inadvertently does you no favours in the professional world, let alone family and friends. What does not hurt your Mac & OS X may bring a PC to it`s knees.

    You do need to be careful on the choice of application; ClamXav is extremely light and only looks in realtime at what you specify and it`s free. The sentry is presently utilising 0.2% of CPU consuming just over an hours worth of CPU time over several weeks and this is on a machine over four years old. Does anyone seriously still believe that running ClamXav on todays modern hardware impacts performance! The paid for packages I agree are a waste of $ offering little more than a placebo with a heavyweight user interface. ClamAV the parent of ClamXav protects numerous servers globally, which is a pretty good tip...

    ClamXav will have no impact on a modern Intel based Mac. To have a free, low headroom, accurate scanner that offers a lot of flexibility and not utilize it seems somewhat stubborn at best. The retorts of AV being a resource hog, boils down to one thing, research; ClamXav will not bog your system down, if it does you have some other inconsistencies that need addressing, or your hardware is so old it`s well and truly time to upgrade, on my Early 2008 MBP ClamXav is simply invisible, there is absolutely no degradation of performance, as for the i7 2.4 & 2.3 Retina MBP it`s completely transparent.

    I have literally decades of work on my systems, I have no intention of losing any data, ClamXav is but one tool in a multilayered safety net. Lets face it, if and when OS X is compromised it will spread like wildfire as many fundamentally believe that OS X is invulnerable. I am not entirely sure posts that overly renforce this sense of security are helpful to the average user, even Apple recognise the threat, however the updates are too slow to be considered a preventative measure...

    I have never had a positive hit in all the years I have run ClamXav equally OS X is gaining traction and it`s simply a matter of time before someone figures it out, thinking otherwise is simply naive. ClamXav cost me nothing monetarily nor time in productivity, this is a safety net that costs little more than five minutes of your time.

    Virus/malware gains traction by exploiting vulnerabilities on unprotected systems. I don't believe for one second that CalmXav is the single security solution for OS X, it is however the de-facto standard for many mail servers globally (ClamAV), and the app is rapidly updated.

    Apple has included ClamAV with OS X server since 10.4 and continues to do so today ( with OS X 10.7.3 Lion Server. ClamXav is transparent on a Intel based Mac, adds another level of protection at zero cost.

    Apple also clearly list Calmav-137-1 on their 10.7.3 Open Source page ( admittedly it is not implemented in the Lion client release, equally I would not be surprised if it was quietly implemented in a forthcoming release of OS X as was XProtect implemented in Snow Leopard. Apple may simply choose to integrate ClamAV into Xprotect and the vast majority will never know the difference. As of OS X 10.6 your Mac is running anti malware like it or not ;)

    There are many compelling reasons to run ClamXav and few if any not too, personal choices aside I fundamentally believe that suggesting that OS X is safe to all and does not need such tools is very much a step in the wrong direction; not all are technically minded, neither do all users who may have access to machines follow the same rules and guidelines. The vast majority simply point and click to get to where or what they want ClamXav simply serves as a barrier to protect those that are unaware and some cases unconcerned, ultimately such safeguards protect the community as a whole.

    Install, dont install it`s down to you now...............

    LittleSnitch is very much like a firewall controlling the flow of information from, and now to you Mac. It does require some setting up, equally it`s easy enough; you are either allowing of denying the flow of data across applications and or background services permanently, time bound or on a specific function; quit app, user log out, restart system etc.

    I use ClamXav, LittleSnitch and i also have two VPN`s with multiple end points, I take the security of my systems very seriously, given that i am a guy from the west, who spends the majority of his time behind the "Great Wall" i have good reason to be careful, as malicious code is far more prevalent across Asia.
  4. Interstella5555 macrumors 603


    Jun 30, 2008
    Maybe don't go to sites that you know could have malware on them?

    (side not, this won't effect your mac, but this is almost as bad as the "how do I download torrents" thread)
  5. Weaselboy Moderator


    Staff Member

    Jan 23, 2005
    If you are going to make smart remarks about what people post, maybe take the time to at least post correct information.

    An unpatched Mac with Java turned on in the browser can get malware by simply visiting an infected web site. So not knowing the OP's current Mac configuration, it would be a good idea for him or her to take the steps in the posts above to secure his machine and run a malware scan.
  6. shopsmart99 thread starter macrumors member

    Mar 14, 2010
    Thanks, How do i check my current Java version on my Mac ?
  7. Venturalaw macrumors newbie

    Apr 16, 2011
    Chiang Mai, Thailand
    Having recurring malware. MacKeeper reports 1 Trojan

    I keep receiving the same information: EXP/JS.lframe.AL; js/lFrame.JG.1; JS/Redirector.QC; JS/lFrame.JW.

    I remove these files/notifications via MacKeeper, but they continue to return.
    Any suggestions would be much appreciated.
  8. justperry macrumors G3


    Aug 10, 2007
    In the core of a black hole.
    Get rid of MacKeeper, it is one of the worst Apps on OS X, there are more of them, also do not use CCleaner and CleanMyMac, those are all not needed and can do more damage than without them.
  9. GGJstudios macrumors Westmere


    May 16, 2008
    As justperry said, you should get rid of MacKeeper and avoid the other apps mentioned. At best, they are unnecessary and ineffective, and could create serious problems for you.
  10. Connortm macrumors newbie

    May 24, 2015
    They do get viruses

    Just a list of a few viruses.
  11. GGJstudios macrumors Westmere


    May 16, 2008
    I encourage you to read the links I posted that you quoted to educate yourself. Nothing in either of the links you posted represents an OS X virus in the wild. There were viruses that affected OS 9 and earlier, but there has never been a true virus in the wild that can affect OS X since it was introduced over 14 years ago. There have been Trojans (not the same thing as a virus) that can affect OS X, but they are all avoidable by users practicing safe computing.

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