Bitcoin-Stealing Mac OS X Trojan Discovered - MacRumors
Skip to Content

Bitcoin-Stealing Mac OS X Trojan Discovered

by

bitcoinA new Mac OS X trojan horse that monitors web browsing traffic in order to steal Bitcoins has been discovered by SecureMac. The trojan, called OSX/CoinThief.A, is disguised as an innocuous Bitcoin app called StealthBit that purports to send and receive anonymous payments.

The app was posted on open-source website GitHub, but the precompiled version of the app had the malicious payload installed. The malware installs browser extensions in Safari and Google Chrome looking for login credentials for a number of Bitcoin related websites including MtGox, BTC-e, and blockchain.info. When the app finds login credentials, it sends those back to the malware's developer.

Initial infection occurs when a user installs and runs an app called "StealthBit," which was recently available for download on GitHub, a website that acts as a repository for open source code. The source code to StealthBit was originally posted on GitHub, along with a precompiled copy of the app for download. The precompiled version of StealthBit did not match a copy generated from the source code, as it contained a malicious payload. Users who downloaded and ran the precompiled version of StealthBit instead ended up with infected systems. A user posting over the weekend on Reddit, the popular discussion site, reported losing 20 Bitcoins (currently worth upwards of $12,000 USD) to the thieves.

Bitcoin users who may have downloaded the app should check their browser extensions in Safari and Google Chrome for generic "Pop-Up Blocker" extensions.

Top Rated Comments

162 months ago
GitHub blew it. They should check all packages before hosting them.
Yes, GitHub should check the million lines of code and the hunderds of packages uploaded every second to make sure there isn't any malicious code in there.

If you don't know what you're talking about, just don't say anything.
Score: 17 Votes (Like | Disagree)
OldSchoolMacGuy Avatar
162 months ago
but i thought if i got my mac i wouldn't any viruses! darn pc vs mac commercials.

You're willingly turning over your login and pass and admin access to your computer. No operating system in the world will stop this type of thing from gain access when you hand it the keys. It's not your security systems fault if you give the burglar your alarm code.
Score: 12 Votes (Like | Disagree)
162 months ago
So the user has to download and install the malware.
Score: 11 Votes (Like | Disagree)
azentropy Avatar
162 months ago
This type of Trojan horse always reminds me of the joke when viruses were first becoming popular. Sanitized to be PC...

XXXXX Virus:
You have just received the "XXXXXX Virus." As the we have no
programming experience, this virus works on the honor system.
Please delete all the files on your hard drive and manually forward
this virus to everyone on your mailing list.

Thank you for your cooperation,
XXXXXXX
Score: 9 Votes (Like | Disagree)
Corrode Avatar
162 months ago
It's not a virus...blah blah blah. Every time.
Score: 9 Votes (Like | Disagree)
FloatingBones Avatar
162 months ago
but i thought if i got my mac i wouldn't any viruses! darn pc vs mac commercials.

That's about as good as NBC's "All visitors to Sochi Immediately Hacked" claim:



Their claims were thoroughly debunked in the article That NBC story 100% fraudulent (http://blog.erratasec.com/2014/02/that-nbc-story-100-fraudulent.html). If I were Putin, I would have ejected the "journalist" who filed that story. :rolleyes:
Score: 7 Votes (Like | Disagree)

Popular Stories

Apple TV Thumb 3

Everything Coming in the 2026 Apple TV 4K

Wednesday July 8, 2026 4:51 pm PDT by
The Apple TV 4K hasn't been updated since 2022, and it's due for a refresh. An update is planned for 2026, but Apple is likely going to wait to launch it after Siri AI launches in iOS 27. Design Apple TV design updates don't happen often, and that's not changing. The next Apple TV is going to have the same squircle shape as the current model, and it'll continue to be made from a black...
iphone 16 teal

'Siri AI' Lawsuit Update: Apple to Pay Owners of These iPhone Models

Thursday July 9, 2026 7:08 am PDT by
In May, Apple agreed to pay $250 million to settle a U.S. class action lawsuit over Siri AI's delayed launch, and eligible iPhone users could receive up to a $95 payout. This week, the California court overseeing the case held a hearing regarding preliminary approval of the settlement, but the judge has not yet issued a ruling. It will likely be at least a few more months before eligible...
apple wallet drivers license feature iPhone 15 pro

Apple Says iPhone Driver's Licenses Will Expand to These 6 U.S. States

Thursday July 9, 2026 7:29 am PDT by
In select U.S. states, residents can add their driver's license or state ID to the Apple Wallet app on the iPhone and Apple Watch, and then use it to display proof of identity or age at select airports and businesses, and in select apps. To set up the feature, open the Wallet app on the iPhone and tap on the plus sign in the top-right corner. Next, tap on Driver's License and ID Cards,...