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DangerBackdoorDiscovered 2016

Eleanor

Eleanor is a 2016 macOS backdoor hidden in a fake file converter called EasyDoc Converter, which set up a Tor hidden service and a local web control panel so attackers could reach the Mac anonymously. If you have EasyDoc Converter, delete it and its launch items, and check Activity Monitor for tor or php processes you didn't start.

Last reviewed · 4 sources

Also known as: OSX.Eleanor, Backdoor.MAC.Eleanor

What is Eleanor?

Bitdefender disclosed Backdoor.MAC.Eleanor in July 2016. EasyDoc Converter.app posed as a drag-and-drop file converter but only downloaded a script that registered three components at startup: a Tor hidden service, a local PHP web service that gives the attacker full control (files, shell commands, running apps, email with attachments), and a Pastebin agent that posts each Mac's unique Tor address. It used the open-source wacaw tool to capture images and video from the webcam. Malwarebytes reported it was offered as a free app on MacUpdate and wasn't signed with an Apple developer ID. XProtect 5368 (macOS 26.5, checked October 29, 2026) carries a signature named OSX.Eleanor.A.

How It Spreads

A free 'EasyDoc Converter' app offered on MacUpdate (Malwarebytes)

Not signed with an Apple developer ID, so it only ran if you overrode Gatekeeper's warning

Downloaded from third-party portals that didn't check what they hosted

Signs to Check For

An app called EasyDoc Converter that never actually converts files

A process named tor in Activity Monitor that you didn't start

php or httpd processes you didn't start

Launch items added around the time you installed the converter

How to Remove Eleanor

  1. Delete EasyDoc Converter

    Remove EasyDoc Converter.app from /Applications or wherever it is, and the disk image it came in from ~/Downloads.

  2. Stop Tor and the web service

    In Activity Monitor, quit any tor and php processes you didn't start, then delete the files behind them; Activity Monitor's Open Files and Ports tab shows where they live.

  3. Remove launch items

    Check ~/Library/LaunchAgents, /Library/LaunchAgents and /Library/LaunchDaemons for plists created when you installed the converter, and Login Items in System Settings.

  4. Change passwords and review access

    The backdoor gave full remote access, so change your passwords from another device, starting with email and banking.

  5. Scan with CoreLock

    CoreLock's free scan checks startup items, and its network check reports services listening on non-loopback addresses. A listener alone doesn't prove another device can connect.

Prevention Tips

Get apps from the Mac App Store or the developer's own site

Be wary of utilities with few reviews and no verifiable developer

Don't override Gatekeeper for apps from unidentified developers

If a utility does nothing it promised, delete it straight away

What CoreLock Checks For

What it can and can't do

Eleanor registers its parts to run at startup, which the startup-items check in CoreLock's free scan covers, and CoreLock's network check reports services listening on non-loopback addresses. A listening address alone doesn't prove another device can connect, and CoreLock can't promise to catch every variant.

Frequently Asked Questions

What is OSX.Eleanor, and what did EasyDoc Converter do?

Eleanor is a macOS backdoor hidden in EasyDoc Converter, which claimed to convert documents but didn't. Instead it installed a Tor hidden service, a local PHP control panel and a Pastebin agent, letting attackers reach the Mac anonymously to manage files, run commands and use the webcam.

How do I check a Mac for the Eleanor backdoor?

Check whether EasyDoc Converter is installed, and look in Activity Monitor for tor, php or httpd processes you didn't start. Then check your launch items for anything added when you installed it.

Why does Eleanor use Tor?

A Tor hidden service gives each Mac an address reachable only through the Tor network, which hides where the attacker is connecting from. The Pastebin agent is how the attacker learned each Mac's address.

Could attackers see through my webcam with Eleanor?

Bitdefender found it used the open-source wacaw tool to capture images and video. Apple says the camera can't activate without the green indicator light turning on, so the light is your cue; disconnect from the internet and follow the removal steps.

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