Printer Friendly Page

Updated: March 14, 2019 10:52:32 AM
Infection Length: Varies
Risk Impact: Low
Systems Affected: Windows


Hacktool.Filensfer is a tool that can be used to upload and download files, as well as other actions.

Antivirus Protection Dates

  • Initial Rapid Release version March 04, 2019 revision 032
  • Latest Rapid Release version March 25, 2019 revision 021
  • Initial Daily Certified version March 05, 2019 revision 001
  • Latest Daily Certified version March 26, 2019 revision 001
  • Initial Weekly Certified release date March 06, 2019

Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Technical Description

The tool may arrive on the computer by way of a server-side vulnerability exploit.

There are several versions of the tool, including a C++ version and a py2exe version.

The tool requires command line arguments to run, and different versions of the tool allow for different arguments. The following are some examples of these arguments:


-time <sfile> <tfile> modify file time
-ftp -s <port> [path] [-t<minute>] transfer files server
-ftp -c <ip> <port> [-p proxy:port] [-t<minute>]
-clog all|sys|sec|app Delete system logs


Usage: FileName.exe -ip= -port=80 [-proxy=] <Command...>


The tool can be used as a file transfer service that allows the user to upload and download files on the computer.

Some versions of the tool may also be used to carry out the following actions:

  • Change file time
  • Execute arbitrary commands
  • Delete system logs


You may have arrived at this page either because you have been alerted by your Symantec product about this risk, or you are concerned that your computer has been affected by this risk.

Before proceeding further we recommend that you run a full system scan. If that does not resolve the problem you can try one of the options available below.

If you are a Norton product user, we recommend you try the following resources to remove this risk.

Removal Tool
Use our tools to remove aggressive risks from your computer.

Infected Windows system files may need to be repaired using the Windows installation CD .

How to reduce the risk of infection
Check out our extensive collections of helpful advice and tips on how to stay safe online .

If you are a Symantec business product user, we recommend you try the following resources to remove this risk.

Identifying and submitting suspect files
Submitting suspicious files to Symantec allows us to ensure that our protection capabilities keep up with the ever-changing threat landscape. Submitted files are analyzed by Symantec Security Response and, where necessary, updated definitions are immediately distributed through LiveUpdate™ to all Symantec end points. This ensures that other computers nearby are protected from attack. The following resources may help in identifying suspicious files for submission to Symantec.

Removal Tool

If you have an infected Windows system file, you may need to replace it using the Windows installation CD .

The following instructions pertain to all current Symantec antivirus products.

1. Performing a full system scan
For information on how to run a full system scan using your Symantec product, follow the guidance given in the product's Help section.

2. Restoring settings in the registry
Many risks make modifications to the registry, which could impact the functionality or performance of the compromised computer. While many of these modifications can be restored through various Windows components, it may be necessary to edit the registry. See in the Technical Details of this writeup for information about which registry keys were created or modified. Delete registry subkeys and entries created by the risk and return all modified registry entries to their previous values.