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Tech: Malware AImed at OS X

Amos 31 Jul 09 - 07:41 PM
Amos 31 Jul 09 - 07:48 PM
Janie 31 Jul 09 - 11:50 PM
Amos 01 Aug 09 - 12:05 AM
Genie 01 Aug 09 - 01:08 PM
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Subject: Tech: Malware AImed at OS X
From: Amos
Date: 31 Jul 09 - 07:41 PM

"Filed under: Software, Security

New Mac OS X malware - OSX_LAMZEV.A
by Steven Sande (RSS feed) on Nov 21st 2008 at 2:30PM

Computer security company Trend Micro is reporting that a new Mac OS X malware application is making the rounds. The application, called OSX_LAMZEV.A, gives hackers a way to take control of infected Macs. This is the second report of Mac OS X malware this week.

This is not a virus, and users must actually launch the app for it to install its payload. Once running, the app also asks which firewall port it can use. Trend Micro reports that "Mac users may be infected when they access remote websites hosting this backdoor. The backdoor may also be disguised as a legitimate application and may be installed and executed on systems."

Many Mac OS X-based malware seems to be similar in nature, requiring users to actually launch the installer and give it permission to install the payload. Unlike Windows-based malware, you shouldn't need to install any anti-malware apps to annoy you and slow down your Mac. Just make sure to follow the basic rules of Internet safety -- don't install applications that aren't legitimate or visit Web sites that you don't trust."

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Subject: RE: Tech: Malware AImed at OS X
From: Amos
Date: 31 Jul 09 - 07:48 PM

The above malware report was from last November. Despite their growing popularity, Macs running OS X still seem to be virus-free for the most part, but that is beginning to change.

A more recent email:

Subject: I encounter my first piece of OSX malware in the wild
>> I just encountered my first genuine piece of OSX malware in the wild.
>> I had done a Google search, and clicking on one of the results produced
>> a window that looked like the RealPlayer, and a popup box saying that I
>> needed to install a new video player.
>> I've encountered this before -- the "video player" is actually a trojan
>> horse. What made this one different is that the file it gave me wasn't
>> a   Windows .exe file but rather a '.dmg' OSX disk image.
>> I very carefully mounted it to examine the contents, being very careful
>> not to execute anything. It contained the directory "install.pkg",
>> i.e.,   it was configured as an installer, so it could execute scripts to
>> modify my system. (You've undoubtedly noticed that some dmg images contain
>> .app   applications that can be copied direct to your applications folder,
>> and others contain .pkg files that have to be executed.)
>> I then googled the domain name I had encountered ( and
>> found it listed on an index of sites that distribute malware. This
>> confirmed it -- I have now, for the first time, encountered a site on
>> the net that actually could have done my Mac some harm had I just
>> blindly installed the thing they wanted me to install.
>> Beware.

It's good to be alert, especially when a non-trusted site tells you you must install an application.


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Subject: RE: Tech: Malware AImed at OS X
From: Janie
Date: 31 Jul 09 - 11:50 PM

While I don't think Sum Yung Sun or I have installed anything we ought not have, how does one check to find out?

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Subject: RE: Tech: Malware AImed at OS X
From: Amos
Date: 01 Aug 09 - 12:05 AM

!. You can browse for reported malware and see what vehicles have been used.
2. You can find some scanning software that detects it coming in. You have to keep its data set updated.

So far we have avoided problems just by being alert to any stuff coming in suggesting installation and accepting only from known sources.


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Subject: Mac hard drive died - cause? Remedies?
From: Genie
Date: 01 Aug 09 - 01:08 PM

I'm wondering if my new (2008) MacBook may have fallen prey to this malware. In over 14 years of using Macs (several laptops and desktop models), I've never had a hard drive crash -- till about a month ago. Then out of the blue I lost a whole 120G hard drive (Mac OSX 10.5), including a lot of video files I was still working on. (I had backed up the videos I had finished editing, including quite a few but not all from the 2008 Getaway, but the ones that were currently "in progress" were not backed up, for the most part,

I kept the hard drive, though it can't be recovered by the geeks at the authorized Mac stores, because it's possible some files might be recoverable by those who take the hard drive apart to do that. (When I win the lottery, I'll get right on that project.)

As for questionable software, I never download software from sites that I haven't sought out myself, but I really don't know which ones can be trusted and which ones can't.

I'll keep abreast of this thread for new info.


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