Goga is a trojan that is executed from a malicious Rich Text Formatted (.rtf) document. Due a security vulnerability, macros are able to execute from a template pointed by a RTF file without notification to the user in Microsoft Word.
Disinfection & Removal
The macro in the template drops and executes an utility that collects dial-up settings from Windows. This includes the user name and the password. This information is then sent to another web site.
The template is no longer available on the web.
Further information and a fix for the vulnerability is available from Microsoft: http://www.microsoft.com/technet/security/bulletin/MS01-028.asp
F-Secure Anti-Virus detects this trojan with updates published at June 15th, 2001.
Technical Details: Katrin Tocheva, Gergely Erdelyi and Sami Rautiainen, F-Secure; June 2001