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

Automatic action

The F-Secure security product will automatically remove the file.

Suspect a file is incorrectly detected (a False Positive)?

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 detection database 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.

For more Support


Find the latest advice in our Community.

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


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:

  • /System/Library/StartupItems/iWorkServices

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:

  • /System/Library/StartupItems/iWorkServices/iWorkServices
  • /System/Library/StartupItems/iWorkServices/StartupParameters.plist
  • /usr/bin/iWorkServices

The iWorkServices files are copies of itself.

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

  • {Description = "iWorkServices"; Provides = ("iWorkServices"); Requires = ("Network"); OrderPreference = "None";}

It may attempt to connect to the following:


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

  • banadd
  • banclear
  • clear
  • get
  • httpget
  • httpgeted
  • leafs
  • nodes
  • p2pihist
  • p2pihistsize
  • p2plock
  • p2pmode
  • p2ppeer
  • p2ppeerport
  • p2ppeertype
  • p2pport
  • p2punlock
  • platform
  • rand
  • rshell
  • script
  • sendlogs
  • set
  • shell
  • sleep
  • socks
  • system
  • uid
  • unknowns
  • uptime