Threat Description

Trojan-Downloader:​JS/Agent.D

Details

Aliases:Trojan-Downloader:​JS/Agent.D
Category:Malware
Type:Trojan-Downloader
Platform:JS

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

You may wish to refer to the Support Community for further assistance. You also may also refer to General Removal Instructions for a general guide on alternative disinfection actions.



Technical Details



Trojan-Downloader:W32/Agent.D is typically found on certain malicious sites.When activated, it downloads an EXE file from a website and saves it into the root directory of the C: drive. The downloaded file is then run.

The trojan also drops a file named CMD.BAT into the root directory of the C: drive. This BAT file is used for cleanup purposes only: it deletes the trojan's file from the hard disk.

Note

Technically. Agent.D's executable file is an HTML Application (HTA file). This file type is normally run by the MSHTA.EXE application, a program that comes standard with Windows.

While it is running, Agent.Dhides its window from the user when it is running by resizing the window to a zero size and preventing it from being visible in the Taskbar.






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