If the file attachment is opened, the trojan-downloader is installed. 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. Trojan-downloaders are also commonly distributed as disguised file attached to spam emails.
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.Īttackers often distribute trojan-downloaders as part of the payload of another harmful program, such as a trojan-dropper, which silently drop and install the trojan-downloader on a device.
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