Backdoor:OSX/Sabpab.A

Classification

Type:Backdoor

Backdoor:OSX/Sabpab.A, MAC.OSX.Trojan.Lamadai.B

Summary

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

Removal

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

Check for the latest database updates
First check if your F-Secure security program is using the latest updates, then try scanning the file again.
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.

Technical 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: