First Mac Ransomware Found in Transmission BitTorrent Client

transmission-29
This weekend, a notice appeared on Transmissionbt.com warning users that version 2.90 of the popular Mac BitTorrent client downloaded from their site may have been infected with malware. The warning reads:

Everyone running 2.90 on OS X should immediately upgrade to 2.91 or delete their copy of 2.90, as they may have downloaded a malware-infected file.

Using “Activity Monitor” preinstalled in OS X, check whether any process named “kernel_service” is running. If so, double check the process, choose the “Open Files and Ports” and check whether there is a file name like “/Users//Library/kernel_service”. If so, the process is KeRanger’s main process. We suggest terminating it with “Quit -> Force Quit”

Reuters reports that the infected download contained the first "Ransomware" found on the Mac platform. Ransomware is a type of malware that encrypts a user's hard drive and demands payment in order to unencrypt it. This type of attack has been increasingly popular on the PC, but this is the first time it has been seen on the Mac.

According to Reuters, Apple is aware of the issue and has already revoked "a digital certificate from a legitimate Apple developer that enabled the rogue software to install on Macs."

The malware in question is said to delay encrypting the user's hard drive for 3 days, so we may see the first reports of those affected as early as Monday. Transmissionbt.com offers instructions on how to see you are affected (above). If you don't use the Transmission software, there is nothing you need to do at this time.

Update: Technical details about the malware.

Update 2: Transmissionbt.com says version 2.92 of Transmission will actively remove the malware.

Top Rated Comments

(View all)
Avatar
57 months ago

to be expected when people use BitTorrent, I have zero sympathy for people who pirate stuff!

Whilst most the time both go hand in hand, BitTorrent is just a method of file transfer and not directly related to piracy.
Score: 52 Votes (Like | Disagree)
Avatar
57 months ago

Cant really blame Apple for data loss if you
(a) Don't make regular backups
(b) Install bit torrent clients (from a website no less) Which have little or no legitimate use other than piracy

to be expected when people use BitTorrent, I have zero sympathy for people who pirate stuff!

Torrent are used for more than piracy my friend, we are not in the early 2000 anymore!!

All Linux distribution are downoadable with torrent and they are 100% legit!
Score: 32 Votes (Like | Disagree)
Avatar
57 months ago

Lol, I don't think I've met an even SLIGHTLY savvy computer user (Mac or PC) in the last eight years or so that uses a client other than uTorrent.
Given that ALL torrent apps are free, why would anyone download this????????

Stability and no ads. Never had a problem with Transmission as my default client.
Score: 27 Votes (Like | Disagree)
Avatar
57 months ago
Apparently it only affects users who downloaded it off of the website and not those who used the in app update.
Score: 27 Votes (Like | Disagree)
Avatar
57 months ago

... if you use time machine

Cant really blame Apple for data loss if you
(a) Don't make regular backups
(b) Install bit torrent clients (from a website no less) Which have little or no legitimate use other than piracy
Score: 26 Votes (Like | Disagree)
Avatar
57 months ago
Looks like Apple has updated XProtect for this KeRanger malware already. This is from my xprotect.plist file.



Score: 24 Votes (Like | Disagree)

Top Stories

iPhone 12 Sizes Compared with iPhone SE, 7, 8, SE 2, X, 11, 11 Pro and 11 Pro Max [Update]

Tuesday July 7, 2020 6:49 pm PDT by
Apple is planning on launching the iPhone 12 this fall which is rumored to be coming in 3 different sizes: 5.4", 6.1" and 6.7". The middle size (6.1") matches up with the currently shipping iPhone 11, but the other two sizes will be entirely new. Over the weekend, there was some excitement about how well the new 5.4" iPhone 12 compares to the original iPhone SE. Those who have been hoping...

Everything New in iOS 14 Beta 2: New Calendar Icon, Files Widget and More

Tuesday July 7, 2020 11:38 am PDT by
Apple today released the second beta of iOS 14 to developers for testing purposes, tweaking and refining some of the features that are coming in the update. Below, we've rounded up all of the changes that we found in the second beta. - Calendar icon - There's a new Calendar app icon in iOS 14 beta 2, with the day of the week abbreviated rather than spelled out. - Clock icon - The clock...

Hands On With iPhone 12 Models Showing New Sizes and Design

Monday July 6, 2020 2:04 pm PDT by
Ahead of the launch of new iPhones we often see dummy models created based on leaked schematics and specifications, with those models designed to let case makers create cases for the new devices ahead of their release. We got our hands on a set of dummy models that represent the iPhone 12 lineup, giving us our first close look at the iPhone 4-style design and the different size options. Subscri ...

Developer's Visual Comparison of macOS Catalina and Big Sur Offers Closer Look at Apple's UI Redesign for Macs

Tuesday July 7, 2020 4:00 am PDT by
macOS 11 Big Sur is the next major release of Apple's operating system for Mac, and following its preview at WWDC, one of the biggest discussions has revolved around the all-new user interface redesign. Developers are still learning what the impact the new UI will have on their apps, and with that in mind, app designer Andrew Denty has compiled an extensive visual comparison of the user...

Analyst Believes iPhone 12 Pricing Will Start $50 Higher Even Without EarPods or Charger in Box

Wednesday July 8, 2020 9:35 am PDT by
Despite multiple reports indicating that Apple will not include EarPods or a wall charger with iPhone 12 models this year, one analyst believes that pricing will still increase slightly compared to the iPhone 11 lineup. In a research note provided to MacRumors, analyst Jeff Pu forecasted that iPhone 12 pricing will start at $749 for a new 5.4-inch model, an increase of $50 over the base...

14-Inch MacBook Pro With Mini-LED Display Expected to Enter Production in 2021

Wednesday July 8, 2020 7:51 am PDT by
Apple suppliers will begin competing to win manufacturing orders for new 14-inch and 16-inch MacBook Pro models with Mini-LED displays in the first quarter of 2021, according to Taiwanese research firm TrendForce. Rumors of a 14-inch MacBook Pro have surfaced since Apple replaced the 15-inch MacBook Pro with a new 16-inch model last year. Apple analyst Ming-Chi Kuo has previously said that...

Apple Seeds First Betas of iOS 14 and iPadOS 14 to Public Beta Testers

Thursday July 9, 2020 10:14 am PDT by
Apple today seeded the first public betas of upcoming iOS and iPadOS 14 updates to its public beta testing group, two weeks after first providing the updates to developers after the WWDC keynote and a day after seeding the second developer betas. Public beta testers who have signed up for Apple's beta testing program can download the iOS/‌iPadOS‌ 14 updates over the air after installing ...

Apple's Arm-Based Macs With Apple Silicon Chips Will Support Thunderbolt

Wednesday July 8, 2020 3:14 pm PDT by
Apple is working on Macs that use its custom Apple-designed Apple Silicon chips instead of Intel chips, but Apple has committed to continuing to support Thunderbolt, reports The Verge. In a statement, an Apple spokesperson said that Apple's upcoming machines will offer support for Intel's Thunderbolt USB-C standard. "Over a decade ago, Apple partnered with Intel to design and develop...

Apple Cuts iPhone Trade-In Values as iPhone 12 Launch Nears

Tuesday July 7, 2020 7:46 am PDT by
With just two months to go until the usual timeframe for Apple's iPhone launch events, Apple is cutting back on maximum trade-in values of previous-generation iPhones for those looking to upgrade to a new model. Maximum values on more recent models have dropped by $30–$50, while older models have generally dropped by $5–$20 with a few models seeing no change in value.iPhone XS Max: $500 to...

Some iPhone Users Report Significant Battery Drain Due to Music App Background Activity in iOS 13.5.1

Wednesday July 8, 2020 1:49 am PDT by
A significant minority of iPhone users have taken to Apple's Support Communities and Reddit to report battery drain issues largely related to the Music app and high levels of background activity. Hundreds of users, many running iOS 13.5.1 on devices both new and old, are experiencing rapid battery drain when the Music app is not in use. In some cases, the background activity occurs over...