First Mac OS X Virus?

bubba451 writes "MacRumors reports on what may be the first virus to affect Mac OS X, disguised as screenshots for the upcoming Mac OS X 10.5 Leopard. From the report: 'The resultant file decompresses into what appears to be a standard JPEG icon in Mac OS X but was actually a compiled Unix executable in disguise. An initial disassembly reveals evidence that the application is a virus or was designed to give that impression.' The virus is said to also spread via Bonjour instant messaging." Update: 02/17 00:09 GMT by P : This is not a virus, it is a simple Trojan Horse: it requires manual user interaction to launch the executable. See Andrew Welch's dissection.

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How to make a .app look like a .jpg in OS X

[mh101]

Step 1. Command-click on a jpeg file and select Get Info.

Step 2. Click on the jpeg icon in the top corner, then select Edit > Copy from the Finder menu.

Step 3. Command-click on a .app file and select Get Info.

Step 4. Click on the application's icon, then select Edit > Paste from the Finder menu.

Step 5. ???

Step 6. PROFIT!