Trojan Horse Agent.4.0

Trojan Horse Agent.4.0 is deemed as browser redirect adware or malicious software. Browser that keeps on redirecting to this web address is compromised with malicious add-on or extension. Existence of malevolent Browser helper object is also one main cause for the hijacking issue.

It is believed that browsers are redirected to Trojan Horse Agent.4.0 for the sole purpose of endorsing unknown programs that deceives computer users into obtaining paid version. Browser hijacking is also used to offer fraudulent online services, especially technical support that pretends to be from legitimate company. Browser redirect that points your browser to unknown site like Trojan Horse Agent.4.0 may simply want to refer web traffics in order to generate online revenue.

Browser redirect doesn't always imply that browser is compromised. It is better to scan the computer with valid anti-virus and anti-malware program to check the computer for malware presence. Web page that initiates the redirect issue may also be compromised with malicious scripts that intend to divert visitor's traffic to malicious web site where malware are waiting to get downloaded.

It is very important that PC is protected with security tools that watch and block harmful web sites and also avoids download of harmful files.


Trojan Horse Agent.4.0 may carry virus, Trojan, or malware into the computer. It may employ drive-by-download technique to facilitate download and execution of malicious threats.

On some instances, redirect malware only targets Internet browser like Google Chrome, Internet Explorer, Mozilla Firefox, and Safari. It makes changes so that home page, new tab, or new window will open to an unknown web site.


Constant redirection to Trojan Horse Agent.4.0 signifies adware or malware presence. Home page or start-up page modified to utilize unknown search engine is also another sign of browser redirect malware.

Other Functions of Trojan Horse Agent.4.0:

  • It will display pop-up advertisements
  • The worm can steal sensitive data from the infected computer
  • Default home page is modified and was set to unknown one
  • Search result links are hijacked
  • Trojan Horse Agent.4.0 also issues fake warnings that will entice you to download potentially harmful files

How to Remove Trojan Horse Agent.4.0

1. Download Malwarebytes' Anti-Malware from this link and save it on your Desktop.
2. After downloading, double-click on mbam-setup.exe to install the application.
3. Follow the prompts and install as default only.

4. Before the installation completes, check on the following prompts:
- Update Malwarebytes' Anti-Malware
- Launch Malwarebytes' Anti-Malware

5. Click Finish. Program will run automatically and you will be prompt to update the program before doing a scan. Please update.
6. Scan your computer thoroughly.
7. When scanning is finished click on the Show Results button.
8. Make sure that all detected threats are marked, click on Remove Selected.
9. Restart your computer.

Note: Some malware may prevent mbam-setup.exe from downloading and running. You can download and rename this program from a different computer before running it on infected system.


  1. Srikumar Mukherjee.

    I have torant hourse agent 4.0. in my computer’s windows/system32/cibcate.dll file & internate explorer.

    I tried different softwares, but could n’t remove.

    Please send me quick reply about, how can i completely remove it ?

    I don’t want to reformate. Thanks.

  2. Srikumar Mukherjee

    I have torant hourse agent 2.AVE (fixsys.exe) in my computer’s Temporary Internet Files directory.
    I tried different softwares, but could n’t remove.
    Please send me quick reply about, how can i completely remove it ?
    I don’t want to reformate. Thanks.

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