Summary

Summary
Action
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| Affected operating systems | Macintosh |
|---|---|
| Protection available since | 25 November 2008 16:32:56 (GMT) |
| Detected by | All Sophos products |
- Endpoint Security and Control 9.0
- Small business solutions 4.0
Action

Summary
Action
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Please follow the instructions for removing Trojans.
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OSX/Jahlav-A is a Trojan created for the Mac OS X operating system. The initial malicious installer is distributed to free downloading web sites purporting to be a key generator for cracking applications.
As a part of the installation a malicious shell script file AdobeFlash is created in /Library/Internet Plug-Ins folder and setup to periodically run. The script contains another shell script in an encoded format which in turn contains a Perl script with the main malicious payload.
The perl script uses http to communicate with a remote website and download code supplied by the attacker.
