Category:	Malware
Type:	Backdoor
Platform:	OSX

Backdoor:OSX/iWorkServ.A is a trojan backdoor that installs itself on Mac OSX computers.

Allow F-Secure Anti-Virus for Mac to disinfect the relevant files.

Protection

Protect your Mac against threats with F-Secure Anti-Virus for Mac.

Backdoor:OSX/iWorkServ.A

iWork is a suite of productivity applications created by Apple Inc.

The legitimate trial version of iWork can be downloaded from:

Illegitimate File Sharing

There are illegitimate copies of iWork 2009 distributed on file sharing sites.

Some of these illegitimate copies contain a malicious backdoor with peer-to-peer functionality.

The backdoor uses a file called iWorkServices and is part of the installer package. This file is detected as iWorkServ.A.

Based on the code the file should install itself to:

It does so with equivalent - read+write+execute attribute.

Upon execution, the backdoor checks if it is run as administrator(sudo mode) by using "_geteuid" and "_getpwuid" API and then testing the output for "root".

If it is not executed with sudo rights, it will just exit.

It checks if the file is executed with a filename of "iWorkServices". If it doesn't it will delete the file "/tmp/.iWorkServices". It then create the following files:

The iWorkServices files are copies of itself.

The "StartupParameters.plist" file contains the following data:

It may attempt to connect to the following:

An attacker is capable of downloading and/or executing files using the following P2P commands: