Trojan-Downloader:W32/HeurFu.gen

Classification

Malware

Trojan-Downloader

W32

Trojan-Downloader:W32/HeurFu.gen, Gen:trojan.heur.fu.bqw@aizha1gi

Summary

This trojan downloads an additional file from a remote server.

Removal

Automatic action

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

Find out more

Knowledge Base

Find the latest advice in our Community Knowledge Base.

User Guide

See the user guide for your product on the Help Center.

Contact Support

Chat with or call an expert for help.

Submit a sample

Submit a file or URL for further analysis.

Technical Details

Trojan:W32/HeurFu.gen and a number closely related detections (see More below) identify a file named report_082011-65_pdf.exe, which is being distributed to users in zipped files as email attachments.

Installation

On execution, the trojan creates the following temp file:

  • %temp%\blood.exe

The trojan-downloader also creates a number of registry entries.

Execution

Then it attempts to download a file named blood.exe from a remote server. The downloaded file appears to be a Zbot variant.

More

A number of closely related detections identify the suspect file report_082011-65_pdf.exe. These detections use the naming format:

  • Gen:trojan.heur.fu.[random alphanumeric string]

For example:

  • Gen:trojan.heur.fu.bqw@aizha1gi
  • Gen:Trojan.Heur.FU.bqW@aiZha1gi
  • Gen:Trojan.Heur.FU.bqW@a4wN11gi

Date Created: -

Date Last Modified: -