Mac malware Eleanor hijacks your local files and email

Malicious code masquerades as file converter

Cyber security skull

New Mac malware that locks people's files and recruit their laptops for botnets has been discovered by cybersecurity researchers.

The malware, known as Backdoor.MAC.Eleanor', was uncovered by Bitdefender, and it is the second bug found to specifically target the Mac OS X  the first being KeRanger ransomware, which was discovered in March.

Advertisement - Article continues below

Bitdefender found Eleanor available on the busy software portal, MacUpdate, masquerading as a free app called EasyDoc Converter'. It claimed to convert a user's FreeOffice and SimpleStats docs to Microsoft Office (.docx) files, but performed no such action when it was run.

Instead, it offered hackers a way to blackmail users and take control of their devices.

"This type of malware is particularly dangerous as it's hard to detect and offers the attacker full control of the compromised system," said Tiberius Axinte, technical leader of Bitdefender Antimalware Lab.

"For instance, someone can lock you out of your laptop, threaten to blackmail you to restore your private files or transform your laptop into a botnet to attack other devices."

MacUpdate has since blocked the software on its site. Also, the app has not been issued with a certificate assigned to a registered Apple developer. For Mac users, this means it will be slightly tougher for them to be exposed to the malware, as, by default, Mac OS X does not open or install uncertified apps. However, committed users can bypass the security measure.

Advertisement - Article continues below
Advertisement - Article continues below

When the app is run, it first checks for the presence of online check-in masker, Little Snitch. If this app is not found, it then downloads malicious code onto the user's computer.

The malware installs three Mac LaunchAgents in the user's home folder, as well as a hidden folder with executable files.

The LaunchAgents files are named as Dropbox fragments, and include:





The three LaunchAgents files activate a Tor hidden service, a web service and a Pastebin agent, according to Bitdefender.

The Pastebin agent lists a victim's Tor address to the Pastebin text repository, where it could be retrieved by attackers.

Hackers using the Eleanor malware can access a computer's file system and administrator database, remotely execute script, and hijack email and email attachments.

Bitdefender's report claims the first upload to Pastebin by this malware occurred on 19 April the malware appears to have been listed on MacUpdate since 16 March.

Advice from cybersecurity firms is to download applications from reputable websites or directly from the developer, and avoid old or abandoned apps.

Featured Resources

The case for a marketing content hub

Transform your digital marketing to deliver customer expectations

Download now

Fast, flexible and compliant e-signatures for global businesses

Be at the forefront of digital transformation with electronic signatures

Download now

Why CEOS should care about the move to SAP S/4HANA

And how they can accelerate business value

Download now

IT faces new security challenges in the wake of COVID-19

Beat the crisis by learning how to secure your network

Download now



Evasive malware threats doubled in 2019

24 Mar 2020

Best free malware removal tools 2019

2 Mar 2020

Best antivirus for Windows 10

3 Sep 2019

Most Popular


Apple confirms serious bugs in iOS 13.5

4 Jun 2020

The UK looks to Japan and South Korea for 5G equipment

4 Jun 2020
high-performance computing (HPC)

AMD virtual tour takes us inside Europe's Hawk supercomputer

4 Jun 2020