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.

kaspersky flashback tool
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.

Popular Stories

iPhone 16 Pro Max Generic Feature 2

5 Biggest Changes Rumored for iPhone 16 Pro Max

Tuesday May 21, 2024 7:29 am PDT by
Given Apple's rumored plan to add an all-new high-end tier to its iPhone 17 series in 2025, this could be the year for Apple to bring its boldest "Pro Max" model to the table — the kind of iPhone 16 upgrade that stands tall above its siblings, both figuratively and literally. If you have been holding out for the iPhone 16 Pro Max, here are five of the biggest changes rumored to be coming...
6chatgpt mac app

5 Reasons to Use OpenAI's ChatGPT App for Mac

Thursday May 23, 2024 6:07 am PDT by
On May 13, OpenAI during its Spring Update announced that it would be releasing a desktop ChatGPT app for the Mac in the "coming weeks," and said that ahead of a wider launch it had started rolling out the app to some ChatGPT Plus subscribers. Subscribe to the MacRumors YouTube channel for more videos. After testing the app for a few days, we thought it was worth sharing some reasons why...
macOS 15 Feature

macOS 15 System Settings to Get Design Overhaul

Thursday May 23, 2024 12:51 pm PDT by
With the macOS 15 update that is set to debut at WWDC in June, Apple plans to rearrange "menus and app UIs," according to a report from AppleInsider. The System Settings app, which was last updated with macOS Ventura, will get one of the biggest updates. With macOS Ventura, Apple renamed the System Preferences app to System Settings, introducing a design similar to the Settings app on the...
new best buy blue

Best Buy's Memorial Day Sale Has Record Low Prices on iPads, MacBooks, and Much More

Friday May 24, 2024 7:12 am PDT by
Best Buy today kicked off its Memorial Day weekend sale, and it has some of the best prices we've tracked in weeks on iPads and MacBooks. Specifically, you'll find record low prices on the 5th generation iPad Air, iPad mini 6, M2 MacBook Air, and M3 MacBook Pro. Note: MacRumors is an affiliate partner with Best Buy. When you click a link and make a purchase, we may receive a small payment,...

Top Rated Comments

Dillenger Avatar
158 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.
Score: 13 Votes (Like | Disagree)
jayducharme Avatar
158 months ago
Interesting that these tools are appearing after Apple announced that a fix of their own is coming....
Score: 9 Votes (Like | Disagree)
wazgilbert Avatar
158 months ago
Make sure all network, email, financial and other important passwords are complex, including upper and lower case letters, numbers and special characters.
Score: 7 Votes (Like | Disagree)
themelz Avatar
158 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 (http://www.f-secure.com/v-descs/trojan-downloader_osx_flashback_i.shtml). Redid it today and both times came up negative.

I downloaded and used an app to do the same (https://github.com/jils/FlashbackChecker/wiki) 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!!!!
Score: 7 Votes (Like | Disagree)
Sedulous Avatar
158 months ago
I still don't believe the 600,000 figure.
Score: 7 Votes (Like | Disagree)
AidenShaw Avatar
158 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.
Score: 5 Votes (Like | Disagree)