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  4. Backdoor:OSX/Sabpab.A

Backdoor:OSX/Sabpab.A

Detection Names:MAC.OSX.Trojan.Lamadai.B
Category:Malware
Type:Backdoor
Platform:OS X

Summary

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

Disinfection

Manual Removal Instructions

  1. 1. Open Activity Monitor, select com.apple.PubSabAgent.pfile, and click Quit Process.
  2. 2. Open Terminal, then execute the following:
    • rm ~/Library/Preferences/com.apple.PubSabAgent.pfile
    • rm ~/Library/LaunchAgents/com.apple.PubSabAgent.plist

Protection

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Additional Details

Arrival

Sabpab.A is dropped into the system by malicious Java applets that exploit the vulnerability identified by CVE-2012-0507, and malicious Word documents that exploit CVE-2009-0563.



Installation

The malware drops the following copy of itself:

  • ~/Library/Preferences/com.apple.PubSabAgent.pfile

It creates the following launchpoint for the file above:

  • ~/Library/LaunchAgents/com.apple.PubSabAgent.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:

  • rtx556[...].onedumb.com[...]
  • 199[...].192.152.100[...]

The backdoor is capable of performing the following actions:

  • Downloading and uploading files
  • Creating new processes
  • Taking screenshots