MP3Concept is the first trojan horse

Trojan horse (computing)

A Trojan horse, or Trojan, is software that appears to perform a desirable function for the user prior to run or install, but steals information or harms the system. The term is derived from the Trojan Horse story in Greek mythology.-Malware:A destructive program that masquerades as a benign...

 for Mac OS X

Mac OS X

Mac OS X is a series of Unix-based operating systems and graphical user interfaces developed, marketed, and sold by Apple Inc. Since 2002, has been included with all new Macintosh computer systems...

, created around April 2004. MP3Concept is benign

Benign

A benign tumor is a tumor that lacks the ability to metastasize. Common examples of benign tumors include moles and uterine fibroids.The term "benign" implies a mild and nonprogressive disease. Indeed, many kinds of benign tumors are harmless to human health...

, it was designed as a proof of concept

Proof of concept

A proof of concept or a proof of principle is a realization of a certain method or idea to demonstrate its feasibility, or a demonstration in principle, whose purpose is to verify that some concept or theory that has the potential of being used...

 regarding how a file can be disguised to an end user in a GUI

Graphical user interface

In computing, a graphical user interface is a type of user interface that allows users to interact with electronic devices with images rather than text commands. GUIs can be used in computers, hand-held devices such as MP3 players, portable media players or gaming devices, household appliances and...

 environment on Mac OS X. It is an application bundle that looks like an MP3

MP3

MPEG-1 or MPEG-2 Audio Layer III, more commonly referred to as MP3, is a patented digital audio encoding format using a form of lossy data compression...

 file. When launched, it plays a clip of a man laughing. Since its creation Apple has added additional verifications to the Finder

Macintosh Finder

The Finder is the default file manager used on Mac OS and Mac OS X operating systems; it is responsible for the overall user-management of files, disks, network volumes and the launching of other applications...

 to prevent such an attack. Antivirus software also now looks for its characteristics as well.

External links

• Symantec profile
• DownloadCheck - a simple utility by The Iconfactory
  The Iconfactory
  The Iconfactory is a small software and graphic design company that specializes in creating icons and software for creating and using icons. The company was founded in April 1996 by Corey Marion, Talos Tsui, and Gedeon Maheux. Lead Engineer Craig Hockenberry joined the company in 1997 and Artist...
  
  to verify files are files, not applications