Backdoor:OSX/iWorkServ.A
Summary
Backdoor:OSX/iWorkServ.A is a trojan backdoor that installs itself on Mac OSX computers.
Removal
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Technical Details
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:
- /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:
- 69.92.177.146:59201
- qwfojzlk.freehostia.com:1024
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
)
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