Story image

New backdoor malware targeting Mac devices

08 Jul 2016

New malware has been discovered that exposes Apple system to cyber-spying and full concealed control by malicious third parties.

Security firm Bitdefender have released details of the new malware, dubbed Backdoor.MAC.Eleanor.

The backdoor malware is embedded into a fake file converter application that is accessible online on reputable sites offering Mac applications and software. 

The EasyDoc Converter.app poses as a drag-and-drop file converter, but has no real functionality - it simply downloads a malicious script.

The script installs and registers the following components to system startup:

1.       Tor Hidden Service

This component creates a Tor hidden service that allows an attacker to anonymously access the control-and-command center from the outside – a local web server dubbed Web Service (PHP) - via a Tor-generated address.

2.       Web Service (PHP)

This component gives the attacker full control over the infected machine. The web service is set up locally and can be accessed through the “onion” address. After authenticating with the correct password, attackers gain access to a web-based control panel with the following abilities:

• File manager (view, edit, rename, delete, upload, download, and archive files)

• Command execution (execute commands)

• Script execution (execute scripts in PHP, PERL, Python, Ruby, Java, C)

• Shell via bind/reverse shell connect (remotely execute root commands)

• Simple packet crafter (probe firewall rule-sets and find entry points into a targeted system or network)

• Connect and administer databases

• Process list/Task manager (access the list of processes and applications running on the system)

• Send emails with attached files

The malware uses a tool named “wacaw” to capture images and videos from built-in webcams.

It also uses a daemon to grab updates and fetch files from the user’s computer or execute shell scripts.

3.       Pastebin Agent

Every infected machine has a unique Tor address that the attacker uses to connect and download the malware. All the addresses are stored on pastebin.com using this agent, after being encrypted with a public key using RSA and base64 algorithms.

Consequences

"This type of malware is particularly dangerous as it’s hard to detect and offers the attacker full control of the compromised system,” says Tiberius Axinte, technical leader, 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. The possibilities are endless,” he explains.

This app is not digitally signed by Apple. As a safety precaution, Bitdefender recommends downloading applications exclusively from reputable websites, and using a security solution for Apple devices to fend off Mac-targeting malware and other specific threats.

Technical analysis was provided by Tiberius Axinte, Technical Leader at Bitdefender Antimalware Lab and Dragos Gavrilut, Antimalware Research Manager.

Privacy: The real cost of “free” mobile apps
Sales of location targeted advertising, based on location data provided by apps, is set to reach $30 billion by 2020.
Myth-busting assumptions about identity governance - SailPoint
The identity governance space has evolved and matured over the past 10 years, changing with the world around it.
Forrester names Crowdstrike leader in incident response
The report provides an in-depth evaluation of the top 15 IR service providers across 11 criteria.
Slack doubles down on enterprise key management
EKM adds an extra layer of protection so customers can share conversations, files, and data while still meeting their own risk mitigation requirements.
Security professionals want to return fire – Venafi
Seventy-two percent of professionals surveyed believe nation-states have the right to ‘hack back’ cybercriminals.
Alcatraz AI to replace corporate badges with AI security
The Palo Alto-based startup supposedly leverages facial recognition, 3D sensing, and machine learning to enable secure access control.
Ensign and IronNet partner to create cyber analytics capabilities
The Singapore-based joint venture will form a Cyber Analytics Center for Excellence focused on securing regional enterprises from sophisticated cyber threats.
Unencrypted Gearbest database leaves over 1.5mil shoppers’ records exposed
Depending on the countries and information requirements, the data could give hackers access to online government portals, banking apps, and health insurance records.