Severity scale:  

Remove Trojan.Agent (Removal Instructions) - updated Jan 2020

removal by Ugnius Kiguolis - -   Also known as Trojan.Agent virus | Type: Trojans

Trojan.Agent is a generic definition of particular malware that can be set to do a variety of malicious tasks on the infected machine

Trojan.Agent is a type of malicious software that uses deception to access user's Windows machines

Trojan.Agent is a heuristic[1] detection name of a Trojan malware category and is often used by a variety of anti-virus engines. Generic names are given to distinct malware family members or when the threat has never been analyzed before, and no detailed information is available. Nevertheless, even then, most of the reputable anti-malware programs are capable of detecting and stopping Trojan.Agent from infiltrating the computer by using machine-learning[2] and other sophisticated methods.

The main purpose of Trojan.Agent is to access the machine while pretending to be something else – in other words, Trojans are pieces of malicious software that disguise as something desirable, such as an application or an email attachment from a seemingly legitimate source. Once inside, the system, Trojan.Agent virus can be set to perform a variety of activities, including stealing information, a proliferation of other malware, logging keystrokes, send spam, and much more.

Name Trojan.Agent
Type Trojan
Description Trojans can represent a wide variety of malware, as their main goal is to gain access to the computer by pretending to be something else
Alternative names Trojan:W32/Agent, Win32.Trojan.Agent
Infiltration  Malware is usually downloaded from malicious websites, distributed via malicious email attachments, fake updates, scam sites, etc. 

While Trojans usually lack visible symptoms, users might notice the following:

  • Redirects to malicious or suspicious websites
  • Sluggishness of the web browser
  • Increased usage of CPU or other computer resources
  • Suspicious processes running in the background
  • Unknown applications installed without permission
  • Disabled anti-malware software
  • System crashes, slowdowns, BSODs, etc.
Removal  Use reputable anti-malware software to perform a full system scan in Safe Mode as explained below
Recovery In case you experience system instability after you terminate the infection, use Reimage Reimage Cleaner Intego to fix virus damage automatically

A Trojan.Agent virus belongs to the “Agent” family of malware, which can also be attributed to such threats as worms, backdoors, and rootkits. In other words, the name “trojan” defines its distribution tactic (it tries to present itself as something else), but its functions may vary greatly, so it can also be administered to threats like worms, ransomware, etc. Due to this, Trojan.Agent removal methods may vary, as each of the threats might be set to do different actions on the infected machine.

As soon as A Trojan.Agent infiltrates the system, it makes it vulnerable to other threats, which means that they can try to attack the system and initiate malicious tasks on it as preset by malicious actors who launched it. For example, it can be programmed to divert users' HTTP traffic[3] to predetermined websites where automated JavaScript launches various types of ads on Google Chrome, Mozilla Firefox, Internet Explorer, or another browser. 

Trojan.Agent then leverages the ad-revenue for its authors, all while the victim is coping with high computer resources usage, sluggishness of browsers, and other issues. Therefore, despite a popular belief, the increased amount of ads does not always mean adware or a browser hijacker infection but also can be a sign of a Trojan.

Trojan.Agent, depending on its aim, can also sometimes show the following symptoms:

  • Increased CPU usage
  • Slowness of the machine
  • System crashes
  • Disabled anti-malware software
  • Application launch failure
  • Unknown programs running on the computer, etc.

In addition to these “visible” symptoms, Trojan.Agent typically drops a variety of malicious files on the system (in places like %AppData% or %Temp%), spawns various processes, modifies Windows registry keys,[4], and performs many other technical changes to Windows. However, these are not that easy to spot for novice and regular computer users.

Trojan.Agent virus
Trojan.Agent is a generic virus that can perform a variety of malicious activities on the host machine

Therefore, the best way to detect and remove Trojan.Agent form the system is by employing a reputable anti-malware program and performing a full system scan. Note that because trojans can be employed to do just anything, it is not impossible that it was used to insert other malicious software on your system. In such a case, anti-malware would get rid of that as well.

Because Trojan.Agent virus tends to modify various system files, it might render the computer damaged after it is eliminated. As a result, you Windows might start crashing, throwing BSODs,, and generally malfunctioning, which could leave you with one option – re-installation of the operating system. To avoid that, we recommend using a PC repair tool Reimage Reimage Cleaner Intego – it can fix virus damage and restore Windows operation to the pre-infection stage.

Trojans can be distributed in various different ways

Trojan.Agent is distributed using different methods that have been widely used by virus creators: it can infiltrate your computer after visiting a malicious website that is filled with infected installers, by clicking on misleading pop-up ad that claims that you need to update one or several of your programs, after opening an infected email attachment that holds macro code inside. Typically, phishing email authors employ social engineering techniques to convince users to open a malicious attachment, so it is important not to do that, even if the email sounds convincing.

Also, downloading illegal programs and cracks can also increase the possibility of downloading Trojan.Agent to your PC system. If you have already noticed that your machine runs slower than it used to run or other symptoms of this cyber threat, you should check your computer for this Trojan horse. Otherwise, you may doom your machine for more serious infections and other issues.

Trojan.Agent distribution
Trojan.Agent can be distributed via spam email attachments

Remove Trojan.Agent from your computer to prevent its compromise

In order to remove Trojan.Agent virus from the system, you should rely on reputable anti-malware software, as tracking all the changes made by it manually would be almost impossible for a regular computer user. However, there are several things to keep in mind before proceed with its termination – for example, the malware might disable your anti-virus to stay on the system as long as possible. Additionally, it could load other malware payloads.

Therefore, Safe Mode might be a mandatory option for a full Trojan.Agent removal – simply follow the guide below. This mode only loads the necessary drivers and processes in order to launch the OS, so malware components are not operational.

Additionally, as a precautionary measure, we also recommend resetting all the installed browsers and resetting all passwords and checking the online banking for illegal money transfers.

do it now!
Reimage Happiness
Intego Happiness
Compatible with Microsoft Windows Supported versions Compatible with OS X Supported versions
What to do if failed?
If you failed to remove virus damage using Reimage Intego, submit a question to our support team and provide as much details as possible.
Reimage Intego has a free limited scanner. Reimage Intego offers more through scan when you purchase its full version. When free scanner detects issues, you can fix them using free manual repairs or you can decide to purchase the full version in order to fix them automatically.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Reimage, try running SpyHunter 5.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Intego, try running Combo Cleaner.

To remove Trojan.Agent, follow these steps:

Remove Trojan.Agent using Safe Mode with Networking

Safe Mode is an excellent tool when trying to battle malware. Access it if Trojan.Agent removal is causing you troubles:

  • Step 1: Reboot your computer to Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Safe Mode with Networking from the list Select 'Safe Mode with Networking'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Networking in Startup Settings window. Select 'Enable Safe Mode with Networking'
  • Step 2: Remove Trojan.Agent

    Log in to your infected account and start the browser. Download Reimage Reimage Cleaner Intego or other legitimate anti-spyware program. Update it before a full system scan and remove malicious files that belong to your ransomware and complete Trojan.Agent removal.

If your ransomware is blocking Safe Mode with Networking, try further method.

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from Trojan.Agent and other ransomwares, use a reputable anti-spyware, such as Reimage Reimage Cleaner Intego, SpyHunter 5Combo Cleaner or Malwarebytes

About the author

Ugnius Kiguolis
Ugnius Kiguolis - The mastermind

If this free removal guide helped you and you are satisfied with our service, please consider making a donation to keep this service alive. Even a smallest amount will be appreciated.

Contact Ugnius Kiguolis
About the company Esolutions


Removal guides in other languages

  1. Guest says:
    November 25th, 2008 at 6:11 pm

    your is so bad,you know???

  2. Guest says:
    January 14th, 2009 at 8:01 pm

    …and yet you provide a removal tool?

    Anyway, you're saying that Kapersky and Malwarebytes are both rogue antivirus software, which is not true. Some qualifiers might be helpful.

  3. Guest says:
    February 9th, 2009 at 2:02 pm

    I have the latest updated Malwarebytes program and though it keeps telling me it has deleted trojan.agent, when you run it again, it is still there.

  4. nameless says:
    May 31st, 2009 at 9:05 am

    if malwarebytes cant delete trojan.agent (which i really doubt) try quarantining it…

  5. Bruce says:
    May 14th, 2013 at 11:02 am

    Same problem as above. Super anti spyware detects it, says it has been removed, next scan its still there

  6. Guest says:
    October 9th, 2009 at 2:10 pm

    malwarebytes removed it 😛

  7. Guest says:
    October 17th, 2009 at 1:10 am

    malware byte is good

  8. says:
    November 17th, 2009 at 10:11 pm

    You have misled me into downloading 100MB worth of useless software. Please specify more clearly that your software is not free.

  9. Guest says:
    October 25th, 2010 at 12:10 am

    I have Malwarebytes and AVG PC tune up, as well as the AVG antivirus software on my computer. One of them gave me 4 trojan.agents, my money's on Malwarebytes.

  10. rendra says:
    May 31st, 2011 at 2:05 am

    How To Remove Trojan.Agent

    C:Documents and SettingsuserLocal SettingsTempsvchost.exe Trojan.Agent ALLOW

  11. fegarius says:
    February 3rd, 2012 at 4:42 pm

    Malwarebytes did not find trojan.agent/gen-sefnit. Try superantispyware free edition works well.

  12. Name says:
    April 8th, 2012 at 5:16 am

    what is the work of Trojan.Agent ?

  13. joe says:
    November 15th, 2013 at 4:25 pm

    i have trojan.dr.agent.Fmen along with other very serious trojans that SpyHunter 4 found but they want $30 to use the removal tool. ill reinstall my OS b4 i pay to remove this crap! And Malwarebytes did NOT find any of my 386 threats that SpyHunter found. My AV didnt catch them either. Ive ran about 20 programs in the last 24 hrs trying to clear up my issues and only a couple are worth noting. Adwcleaner, spybot SD, Rkill, JRT. All my problems came from downlaoding MagicIso for Cnet too so nothing is safe anymore!

Your opinion regarding Trojan.Agent