[Trojan] - AppleScript.THT Trojan Horse

[gajanan]

AppleScript.THT Trojan Horse
New OS X Trojan Horse in the Wild
SecureMac Security Advisory
Discovery: June 19th, 2008

Updated: N/A

Security Risk: Critical

SecureMac has discovered multiple variants of a new Trojan horse in the wild that affects Mac OS X 10.4 and 10.5. The Trojan horse is currently being distributed from a hacker website, where discussion has taken place on distributing the Trojan horse through iChat and Limewire.

The Trojan horse runs hidden on the system, and allows a malicious user complete remote access to the system, can transmit system and user passwords, and can avoid detection by opening ports in the firewall and turning off system logging. Additionally, the AppleScript.THT Trojan horse can log keystrokes, take pictures with the built-in Apple iSight camera, take screenshots, and turn on file sharing. The Trojan horse exploits a recently discovered vulnerability with the Apple Remote Desktop Agent, which allows it to run as root.

The Trojan is distributed as either a compiled AppleScript, called ASthtv05 (60 KB in size), or as an application bundle called AStht_v06 (3.1 MB in size). The user must download and open the Trojan horse in order to become infected. Once the Trojan horse is running, it will move itself into the /Library/Caches/ folder, and add itself to the System Login Items.

Protection: To protect your system against this threat, run MacScan 2.5 Macintosh Spyware Trojan Keystroke Logger, Mac Spyware Detection Removal Protection Mac OS X (MacScan is a product of SecureMac) with the latest Spyware Definitions update (2008011), dated June 19th, 2008. SecureMac recommends that users download files only from trusted sources and sites.

Additional removal instructions and resources will be posted once available.

Resources: http://www.securemac.com/data/applescripttht.pdf

Taken from : AppleScript.THT Trojan Horse - Mac OS X Trojan Horse
Hope this helps.
Cheers.

[Magnus]

I believe that was already posted about.