This type of trojan secretly downloads malicious files from a remote server, then installs and executes the files.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
Detailed instructions for F-Secure security products are available in the documentation found in the Downloads section of our Home - Global site.
You may also refer to the Knowledge Base on the F-Secure Community site for further assistance.
A Trojan-Downloader is a type of trojan that installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional programs (usually malware) onto the infected computer.
Trojan-Downloaders are often distributed as part of the payload of another malware, such as a Trojan-Dropper. Trojan-Downloaders may also be distributed as a file attachment to spam e-mails. The attached programs are typically labelled using legitimate-sounding program or document names, such as 'invoice' or 'accounts.exe', as a simple form of social engineering. On opening the file attachment, the Trojan-Downloader is installed.
Once its primary download/execution routine is completed, it may also proceed to a secondary payload routine.
For representative examples of Trojan-Downloaders, please see the following descriptions: