What is Trojan IRC/Backdoor.sd? IRC/Backdoor Fake Detection

Trojan IRC/Backdoor.sd is a detection that scammers use in the web browser scam. They display a McAfee scan page on the website, claiming that your system has several dangerous viruses. In reality, their intention is solely to coerce you into purchasing the McAfee license.

Most frequently, the page containing the fake McAfee scam featuring the Win32Hoax.Renos.HX detection is a result of adware activity. This page often obstructs any input from you, compelling you to engage with its contents. The interaction there is quite limited – the primary goal of the scammers is to make you buy the McAfee antivirus license.

It is better to prevent, than repair and repent!

When we talk about the intrusion of unfamiliar programs into your computer’s work, the proverb “Forewarned is forearmed” describes the situation as accurately as possible. Gridinsoft Anti-Malware is exactly the tool that is always useful to have in your armory: fast, efficient, up-to-date. It is appropriate to use it as an emergency help at the slightest suspicion of infection.

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Trojan IRC/Backdoor.sd Overview

The Trojan IRC/Backdoor.sd detection you can see in the lower right side is shown to you by Microsoft Defender. That anti-malware application is quite OK at scanning, but prone to be mainly unreliable. It is defenseless to malware attacks, it has a glitchy interface and problematic malware removal capabilities. Thus, the pop-up which says about the IRC/Backdoor is simply an alert that Defender has actually found it. To remove it, you will likely need to make use of another anti-malware program.

Example of McAfee fake scan page

The adware inducing the display of this fraudulent page is exceptionally malicious. This malware deluges you with an excessive number of advertisements. Have you ever encountered doorway sites? They’re rife with nothing but incessant banners – incessantly blinking, shoddily designed, and bearing peculiar information. Adware subjects every site you access to the same treatment. This malware cunningly generates revenue for its developers. You view the banners – they reap profits. Furthermore, these banners frequently harbor deceitful and explicit content. Penis enlargement solicitations, advertisements for pornography sites, and offers to acquire an iPhone for $50 – all these are par for the course with adware.

Threat Summary:

Is Trojan IRC/Backdoor.sd dangerous?

Adware like one that causes the appearance of Trojan IRC/Backdoor.sd is not something contrasty, compared to other advertising malware. However, as it was mentioned, the banners it reveals to you are quite often full of fraudulent content. Even if you can identify fraud from adware – do you really like looking at ads for free? Specifically ones that cover your web browser window and disturb you from your working process? It seems that we already know the reply.

How did I get this virus?

It is difficult to line the origins of malware on your PC. Nowadays, things are mixed, and distribution ways chosen by adware 5 years ago can be utilized by spyware nowadays. However, if we abstract from the exact distribution tactic and will think about why it works, the explanation will be really uncomplicated – low level of cybersecurity awareness. People press on ads on odd sites, open the pop-ups they receive in their web browsers, call the “Microsoft tech support” assuming that the weird banner that says about malware is true. It is necessary to know what is legitimate – to avoid misconceptions when trying to identify a virus.

The example of Microsoft Tech support scam banner

Nowadays, there are two of the most widespread ways of malware distribution – lure emails and also injection into a hacked program. While the first one is not so easy to stay away from – you must know a lot to understand a fake – the 2nd one is very easy to solve: just don’t utilize hacked programs. Torrent-trackers and other providers of “free” applications (which are, actually, paid, but with a disabled license checking) are really a giveaway point of malware.

Remove adware with Gridinsoft Anti-Malware

We have also been using this software on our systems ever since, and it has always been successful in detecting viruses. It has blocked the most common malicious programs as shown from our tests with the software, and we assure you that it can remove adware as well as other malware hiding on your computer.

To use Gridinsoft for remove malicious threats, follow the steps below:

1. Begin by downloading Gridinsoft Anti-Malware, accessible via the blue button below or directly from the official website gridinsoft.com.

2.Once the Gridinsoft setup file (setup-gridinsoft-fix.exe) is downloaded, execute it by clicking on the file.

3.Follow the installation setup wizard's instructions diligently.

4. Access the "Scan Tab" on the application's start screen and launch a comprehensive "Full Scan" to examine your entire computer. This inclusive scan encompasses the memory, startup items, the registry, services, drivers, and all files, ensuring that it detects malware hidden in all possible locations.

Be patient, as the scan duration depends on the number of files and your computer's hardware capabilities. Use this time to relax or attend to other tasks.

5. Upon completion, Anti-Malware will present a detailed report containing all the detected malicious items and threats on your PC.

6. Select all the identified items from the report and confidently click the "Clean Now" button. This action will safely remove the malicious files from your computer, transferring them to the secure quarantine zone of the anti-malware program to prevent any further harmful actions.

8. If prompted, restart your computer to finalize the full system scan procedure. This step is crucial to ensure thorough removal of any remaining threats. After the restart, Gridinsoft Anti-Malware will open and display a message confirming the completion of the scan.

Remember Gridinsoft offers a 6-day free trial. This means you can take advantage of the trial period at no cost to experience the full benefits of the software and prevent any future malware infections on your system. Embrace this opportunity to fortify your computer's security without any financial commitment.

Trojan Killer for “adware” removal on locked PC

In situations where it becomes impossible to download antivirus applications directly onto the infected computer due to malware blocking access to websites, an alternative solution is to utilize the Trojan Killer application.

There is a really little number of security tools that are able to be set up on the USB drives, and antiviruses that can do so in most cases require to obtain quite an expensive license. For this instance, I can recommend you to use another solution of GridinSoft - Trojan Killer Portable. It has a 14-days cost-free trial mode that offers the entire features of the paid version. This term will definitely be 100% enough to wipe malware out.

Trojan Killer is a valuable tool in your cybersecurity arsenal, helping you to effectively remove malware from infected computers. Now, we will walk you through the process of using Trojan Killer from a USB flash drive to scan and remove malware on an infected PC. Remember, always obtain permission to scan and remove malware from a computer that you do not own.

Step 1: Download & Install Trojan Killer on a Clean Computer:

1. Go to the official GridinSoft website (gridinsoft.com) and download Trojan Killer to a computer that is not infected.

2. Insert a USB flash drive into this computer.

3. Install Trojan Killer to the "removable drive" following the on-screen instructions.

4. Once the installation is complete, launch Trojan Killer.

Step 2: Update Signature Databases:

5. After launching Trojan Killer, ensure that your computer is connected to the Internet.

6. Click "Update" icon to download the latest signature databases, which will ensure the tool can detect the most recent threats.

Step 3: Scan the Infected PC:

7. Safely eject the USB flash drive from the clean computer.

8. Boot the infected computer to the Safe Mode.

9. Insert the USB flash drive.

10. Run tk.exe

11. Once the program is open, click on "Full Scan" to begin the malware scanning process.

Step 4: Remove Found Threats:

12. After the scan is complete, Trojan Killer will display a list of detected threats.

13. Click on "Cure PC!" to remove the identified malware from the infected PC.

14. Follow any additional on-screen prompts to complete the removal process.

Step 5: Restart Your Computer:

15. Once the threats are removed, click on "Restart PC" to reboot your computer.

16. Remove the USB flash drive from the infected computer.

Congratulations on effectively removing adware and the concealed threats from your computer! You can now have peace of mind, knowing that they won't resurface again. Thanks to Gridinsoft's capabilities and commitment to cybersecurity, your system is now protected.

Reset Browser settings after the adware attack

Adware makes a lot to keep annoying you even after being removed from your computer. It distorts the browser configurations, so it will not work correctly. Until you reset it, of course. Each browser has its own way to restore the default settings. Here are the guides for the most popular ones:

To reset Edge, do the following steps:

1. Open “Settings and more” tab in upper right corner, then find here “Settings” button. In the appeared menu, choose “Reset settings” option:

2. After picking the Reset Settings option, you will see the following menu, stating about the settings which will be reverted to original:

For Mozilla Firefox, do the next actions:

1. Open Menu tab (three strips in upper right corner) and click the “Help” button. In the appeared menu choose “troubleshooting information”:

2. In the next screen, find the “Refresh Firefox” option:

After choosing this option, you will see the next message:

If you use Google Chrome

1. Open Settings tab, find the “Advanced” button. In the extended tab choose the “Reset and clean up” button:

2. In the appeared list, click on the “Restore settings to their original defaults”:

3. Finally, you will see the window, where you can see all the settings which will be reset to default:

Opera can be reset in the next way

1. Open Settings menu by pressing the gear icon in the toolbar (left side of the browser window), then click “Advanced” option, and choose “Browser” button in the drop-down list. Scroll down, to the bottom of the settings menu. Find there “Restore settings to their original defaults” option :


2. After clicking the “Restore settings…” button, you will see the window, where all settings, which will be reset, are shown:

When the browsers are reset, you need to make sure that your browser will be connected the proper DNS while connecting to the web page you need. Make a text file named “hosts” on your desktop, after that open it and fill it with the following content¹:


# Copyright (c) 1993-2006 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host
# localhost name resolution is handle within DNS itself.
# 127.0.0.1 localhost
# ::1 localhost


Find the hosts.txt file in C:/Windows/System32/drivers/etc directory. Rename this file to “hosts.old.txt” (to distinguish it from the new one), and then move the file you created on the desktop to this folder. Remove the hosts.old from this folder. Now you have your hosts file as good as new.

Reset Browser settings with GridinSoft Anti-Malware

GridinSoft Anti-Malware offers its own way to reset the browsers. With the help of this program, you can reset all your browsers in just several clicks. It also resets the HOSTS file automatically, so you don’t need to make any excessive actions. To reset your browser with GridinSoft Anti-Malware, open the Tools tab, and click the “Reset browser settings” button.

You can see the list of the options for each browser. By default, they are set up in the manner which fits the majority of users. Press the “Reset” button (lower right corner). In a minute your browser will be as good as new.

1. Official Microsoft guide for hosts file reset.