Threat Description

Trojan-Downloader

Details

Category: Malware
Type: Trojan-Downloader
Platform: W32

Summary


This type of trojan secretly downloads malicious files from a remote server, then installs and executes the files.



Removal


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More

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.


Suspect A False Alarm?

If you suspect a file has been incorrectly identified as malicious, (that is, it is a False Alarm or a False Positive), please first ensure your F-Secure security program is up-to-date with the latest detection database updates, then rescan the suspect file.

If you continue to suspect a False Alarm, you may submit a sample of the suspect file to our Security Labs for further analysis via the Sample Analysis System (SAS).






Technical Details


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:






SUBMIT A SAMPLE

Suspect a file or URL was wrongly detected? Submit a sample to our Labs for analysis

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