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Another Macintosh trojan hits the wild. The last Macintosh trojan that we reported on was named Flashback.C, and would execute after you opened a .dmg file posing to be Adobe...
10-26-2011, 02:55 PM #1
New Macintosh Trojan – Turns Your Mac Into a Virtual Website Attacker
Another Macintosh trojan hits the wild.
The last Macintosh trojan that we reported on was named Flashback.C, and would execute after you opened a .dmg file posing to be Adobe Flash player. It would install and disable your Apple Anti-Malware system. If you had LittleSnitch installed, the trojan would not execute, instead automatically delete itself.
Now, another Macintosh trojan is on the loose. This trojan was originally made for Linux systems, but was ported to Mac OS by a couple of hackers. It's called OSX/Tsnunami.A and it uses your computer and internet connection to attack Web Sites. The Linux build of the trojan was known as Linux/Tsnunami or Troj/Kaiten.
How does it do that?
OSX/Tsnunami.A is installed on your computer, and sets itself up with internet servers through IRC and waits for users in those IRC's to enter commands for the trojan to execute. When activated, it will attack a Web Site with Distributed Denial of Service (DDoS) attacks. What this means is that the trojan will repeatedly send bulks of requests to a Web Site until it crashes. Effects will be similar to how Apple's website (more specifically the iOS 5 update servers) crashed due to the huge volume of users trying to update at once. That being said, this trojan can cause huge problems for Web Sites and the unaware user would be denying service to a Web Site, which is generally unlawful under intentional circumstances. So the trojan could be setting you up for more than just downing a Web Site, but it makes your machine a hotspot for agents investigating the issue.
Does it do anything else?
Yes. OSX/Tsnunami.A not only makes your computer attack Web Sites, but it also it attempts to fill your computer with more malware. Generally this wouldn't be too bad of an issue, as the Apple Anti-Malware is not disabled by this trojan. Most of it would be forbidden to execute from the start. But a mix of this trojan, plus the Flashback.C trojan is an ugly combination.
I warn all Mac users to be careful of what they are downloading. Make sure that all downloaded .Dmg files or any kind of file that can be executed are legitimate and downloaded from the official websites. These types of trojans are only installed by inadvertently downloading a fake .Dmg file and installing it. These kinds of trojans can only be installed after the users permits the installation by entering their system password. So please be cautious how you enter your password. If you don't have LittleSnitch, I highly recommend the investment, as it will help keep some of the problems such as Flashback.C out of your system. OSX/Tsnunami.A is definitely not a problem that you want to deal with.
Sophos Anti-Virus for Mac has been updated to find and terminate OSX/Tsnunami.A. I recommend it if you are in fear that this trojan could potentially put you at risk, that you install Sophos.
Last edited by Anthony Bouchard; 10-26-2011 at 05:57 PM.
10-26-2011, 04:12 PM #2
Anonymous? Usually they have direction in DDoS attacks, not really just at random.
Edit: Maybe I read this wrong... It's controlled by the people in the IRC client once it hooks up with them?
10-26-2011, 04:14 PM #3
10-26-2011, 04:59 PM #4
10-26-2011, 05:06 PM #5
10-26-2011, 07:05 PM #6
i guess a future security update should take care of this problem right?
10-26-2011, 07:17 PM #7
10-26-2011, 08:21 PM #8
Finally Mac users can stop saying "I don't need anti virus like windows does"
With Macs increasing in popularity it's only a matter of time till macs have as much viruses as windows.
Then a business of anti virus for Mac will come about and hopefully increase jobs. :/
10-26-2011, 08:38 PM #9
Mac users still have to input admin password to install it in the first place.
10-26-2011, 10:27 PM #10
10-26-2011, 11:11 PM #11
Actually we still can say that, we don't have to have one at all. Unless you're dumb enough to download and install this yourself (in which case you deserve to have it on your computer) you're fine without any anti-virus program...
Last edited by steve-z17; 10-26-2011 at 11:21 PM.
10-27-2011, 02:27 AM #12
10-27-2011, 08:46 AM #13
There has never been a virus on a mac, no need for anti-virus software, this is a trojan, something completely diff than a virus, plus you have to be stupid enough to install it yourself, u windows users are too envious, save up a little extra money and protect yourself with a macComputers in the future may weigh no more than 1.5 tons.
- Popular Mechanics, 1949
10-27-2011, 09:17 AM #14
If I am going to spend 1 grand on a "High end Mac laptop" I would rather spend that money on a Sony windows laptop (customized) and get my money's worth.
$1000 windows laptop = last up to 4 years
V.s. the latest Mac and get outdated again in a few months...you spend more on the name than u spend on a on the hardware it's self.
FYI windows takes 10 secs to load and log in my account with ssd.
10-27-2011, 11:01 AM #15
Let's talk about your boot time now. Windows boots up quickly, but when you log in everything needs to start booting up (your startup programs). So in reality it takes longer than 10 seconds before you can start fluidly using your computer. Mac OS brings up startup programs while you're on the login screen but suspends them until you log on (the boot process still happens on a Mac but it is much more efficient on timing). This method of booting up means Mac OS can boot up more quickly after you log on. I.E. the boot process. A Mac operating on an SSD can be faster.
Last edited by Anthony Bouchard; 10-27-2011 at 11:09 AM.
10-27-2011, 01:22 PM #16
I have been owned D:
Well this was a good way to pass the time
10-27-2011, 03:18 PM #17
And second I hate hearing/ reading dumb remarks like this. I had a dell xps studio when it came out and 6 months later I had a blue screen of death. That computer was more than a grand do you really think a sony will last 4 years? If you do you need a reality check. Here it is windows and pc are ****. My first Mac mini lasted for 3 years and I just sold it in perfect condition. Now I'm on my second Mac product and it's still amazing. The software might get out dated nd then what? Update it. The hardware maybe but does it still work? it'll work for years if you take care of it. FYI I never have to turn my Mac off so i don't need to login. get an apple and then say you love windows
10-29-2011, 03:33 AM #18
EAT IT, PC.. hahaha
Sure, MBP's are get outdated, but only because apple refreshes...with new processors, or technology...
I'm not about to say more. TWELVE YEAR OLD IBOOK!
4 years? LMFAO