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Antivirus Firms Release Free Tools for Cleaning Macs Infected by Flashback

Yesterday, Apple disclosed for the first time that it is working to develop a software tool to detect and remove the Flashback malware from infected machines. We also previously profiled Flashback Checker, a simple app designed to allow users to easily see if their Macs are infected but which provides no assistance with disinfection.

While Apple works on its own official solution, other parties have continued to develop their own increasingly user-friendly tools for dealing with the threat and cleaning infected machines, with some of those tools making their way into the public's hands.

Russian antivirus firm Kaspersky Lab, which has played a key role in monitoring and publicizing the threat of Flashback, yesterday announced the launch of a free web-based checker where users can simply input the hardware UUID of their Mac to see if it has registered on the firm's servers as an infected machine. The company has also released Flashfake Removal Tool, a free app that quickly and easily detects and removes the malware.

Antivirus firm F-Secure has also announced its own free Flashback Removal app. The app generates a log file detailing whether it has found Flashback on a user's system, and if so quarantines it inside an encrypted ZIP file for disposal.

F-Secure also points out that Apple has yet to offer any protection for users running systems earlier than Mac OS X Snow Leopard. Flashback uses a vulnerability in Java to install itself without user authorization, and Apple released software patches for Java on Lion and Snow Leopard last week to close that hole and prevent infection on updated systems. Machines running earlier versions of Mac OS X do, however, remain unprotected. Specifically, F-Secure notes that over 16% of Macs are still running Mac OS X 10.5 Leopard, marking a substantial user base that remains vulnerable to the threat.

Update: Kaspersky Lab has informed MacRumors that the Flashfake Removal Tool has temporarily been pulled after the discovery that in some cases it could erroneously remove certain user settings. A fixed version of the tool will be posted as soon as it is available.

Update 2: The patched version of the Flashfake Removal Tool is now available through the Kaspersky Lab site.

Top Rated Comments

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77 months ago

I checked and was not infected. I'm always skeptical about companies doing anything for free. What's the catch with Kaspersky?:rolleyes:

I think in time they will try to get you to open your walletsky so you can spend some of your moneysky on their Mac anti-virusky.
Rating: 13 Votes
77 months ago
Interesting that these tools are appearing after Apple announced that a fix of their own is coming....
Rating: 9 Votes
77 months ago
Kaspersky Lab web page is bogus

A few days ago I did the Terminal commands that F-Secure posted for checking for Flashback trojan ( Redid it today and both times came up negative.

I downloaded and used an app to do the same ( and also the F-Secure Flashback Removal app. They both also came up negative.

I used the web-based checker in this article, put in the hardware UUID of my Mac and surprise, surprise, it came up positive.

I would have thought that MacRumours would've tested them and saw that the Kaspersky Lab web page is bogus!!!!
Rating: 7 Votes
77 months ago
I still don't believe the 600,000 figure.
Rating: 7 Votes
77 months ago

Make sure all network, email, financial and other important passwords are complex, including upper and lower case letters, numbers and special characters.

Rating: 7 Votes
77 months ago
I would guess that way over 16% of Macs are running a pre-Snow Leopard OS.
Rating: 5 Votes
77 months ago

'infected' suggests its a virus. thought macs didnt get viruses. haha

Gosh you must be on to something. I guess Mac users are all idiots.

Rating: 5 Votes
77 months ago
This scare mongering by the media and AV vendors is pathetic. The reports of shady removal tools and websites already is proof enough. It's to get you scared so you go and get their AV tools. A Java bug doesn't suddenly make it okay to turn over your whole computer/file system to an AV company. Yeah, go paste your UUID number everywhere... especially on a page that isn't even SSL encrypted. Sure looks trustworthy to me!

A whois on doesn't even give you anything. Just domains by proxy.. which means whoever set this up didn't want you to see anything when you run a whois. A whois on Kapersky shows everything as it should be. Why would Kapersky have a normal whois on their own site but not on another site they have? Wouldn't you want your name on a malware checker? Not to mention the different IP's. Why not host it on the same server? Things aren't fitting together here...

These Java vulnerabilities have been known for a while and the only fault of Apple is not updating quickly enough- basically at the last minute shortly after the "news" broke about the "600,000" people infected, which I don't really believe. And Safari's defaulted "derp, allow Java all the time!" habit is annoying. Apple kinda asked for all this negative attention.

Firefox+Noscript= End of drive-by attacks.
Rating: 5 Votes
77 months ago

All Mac antivirus software is a scam. My mom's friend paid a lot of money to get her Mac cleaned of "viruses". Anyway "Mac antivirus" is an oxymoron.

People who don't admit that "virus" and "malware" mean the same thing to most people miss the point.

If your identity and credit card numbers are sent to criminals in the Ukraine - is it "OK" if malware sent the info and "bad" if a virus sent the info?

I'd think that most people would label it as "bad" regardless of minor technical details of the infection.

And add to that the simple truth that viruses aren't really that common anymore - OS changes have made the threat of viruses fairly small. When you get a product like Norton, you're buying "anti-malware" protection - even if the product name contains the word "antivirus" for historical familiarity.
Rating: 5 Votes
77 months ago

The 600K users infected themselves unknowingly by opening the malware (and not just getting infected by a virus).

And were the 600K happy that they were infected by malware rather than a virus?

As I said, just get off the "virus vs. malware" track - to almost everyone they are the same thing, something bad on the computer.

More reasons not to get antivirus for Mac.

As I said, companies sell packages that protect against threats, even as the threats evolve. A product named "FUBAR AntiVirus" may contain anti-malware as well as anti-virus features.

Don't dismiss a possibly useful security tool because it has the five letters "v i r u s" in its name.

I'm pretty sure that there will be no Mac virus.

And I'm pretty sure that the people infected with this and future Apple OSX malware won't give a damn about petty distinctions between "virus" and "malware".
Rating: 4 Votes

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