Backdoor:OSX/Olyx.B

Classification

Malware

Backdoor

OSX

Backdoor:OSX/Olyx.B, Mac.OSX.Trojan.Lamadai.A

Summary

Backdoor:OSX/Olyx.B connects to a remote server to receive further instructions, without the knowledge or permission from the user.

Removal

Manual removal

  1. Open Activity Monitor, select AudioServer, and click Quit Process.
  2. Open Terminal, then execute the followings:
    • rm /Library/Audio/Plug-Ins/AudioServer
    • rm ~/Library/LaunchAgents/com.apple.DockActions.plist
Find out more

Knowledge Base

Find the latest advice in our Community Knowledge Base.

User Guide

See the user guide for your product on the Help Center.

Contact Support

Chat with or call an expert for help.

Submit a sample

Submit a file or URL for further analysis.

Technical Details

Arrival

Olyx.B is dropped into the system by malicious Java applets that exploit vulnerabilities identified by CVE-2011-3544 and CVE-2012-0507.

Installation

The malware drops the following copy of itself:

  • /Library/Audio/Plug-Ins/AudioServer

It creates the following launchpoint for the file above:

  • ~/Library/LaunchAgents/com.apple.DockActions.plist

Payload

The malware connects to a remote server to obtain additional commands. The server varies between samples. As of this writing, there are two known servers:

  • dns[...].assyra.com[...]
  • avira[...].suroot.com[...]

The backdoor is capable of performing the following actions:

  • Downloading and uploading files
  • Executing shell commands

Other variants

Date Created: -

Date Last Modified: -