Trojan:Win32/Leonem.CB5 — Leonem Trojan Removal Guide

Written by Wilbur Woodham
If you spectate the notification of Trojan:Win32/Leonem.CB5 detection, it appears that your system has a problem. All viruses are dangerous, without any exceptions. Leonem is a malicious application that aims at exposing your system to further malware injection. The majority of the modern virus examples are complex, and can download other viruses. Being infected with the Trojan:Win32/Leonem.CB5 malware often equals to getting a malicious thing which can act like spyware or stealer, downloader, and a backdoor. Spectating this detection means that you need to perform the malware removal as fast as you can.
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Any type of malware exists with the only target – make money on you1. And the developers of these things are not thinking about ethicality – they use all possible ways. Grabbing your private data, receiving the comission for the ads you watch for them, exploiting your PC to mine cryptocurrencies – that is not the complete list of what they do. Do you like to be a riding horse? That is a rhetorical question.

What does the pop-up with Trojan:Win32/Leonem.CB5 detection mean?

The Trojan:Win32/Leonem.CB5 detection you can see in the lower right corner is demonstrated to you by Microsoft Defender. That anti-malware software is quite OK at scanning, but prone to be generally unstable. It is unprotected to malware attacks, it has a glitchy user interface and bugged malware removal capabilities. For this reason, the pop-up which states about the Leonem is just a notification that Defender has found it. To remove it, you will likely need to use a separate anti-malware program.

Trojan:Win32/Leonem.CB5 found

Microsoft Defender: “Trojan:Win32/Leonem.CB5”

The exact Trojan:Win32/Leonem.CB5 infection is a really undesirable thing. It digs inside of your system disguised as a part of something legitimate, or as a part of the program you downloaded from a forum. Then, it makes everything to weaken your system. At the end of this “party”, it injects other viruses – ones which are wanted by cybercriminals who manage this virus. Hence, it is almost impossible to predict the effects from Leonem actions. And the unpredictability is one of the baddest things when it comes to malware. That’s why it is better not to choose at all, and don’t let the malware to complete its task.

Threat Summary:

NameLeonem Trojan
DetectionTrojan:Win32/Leonem.CB5
DetailsLeonem tool that looks legitimate but can take control of your computer.
Fix ToolSee If Your System Has Been Affected by Leonem Trojan

Is Trojan:Win32/Leonem.CB5 dangerous?

As I have actually stated before, non-harmful malware does not exist. And Trojan:Win32/Leonem.CB5 is not an exclusion. This virus alters the system configurations, alters the Group Policies and registry. All of these things are crucial for proper system functioning, even when we are not talking about PC safety. Therefore, the malware which Leonem contains, or which it will inject after some time, will try to get maximum revenue from you. Cybercriminals can steal your data, and then sell it at the black market. Using adware and browser hijacker functionality, embedded in Trojan:Win32/Leonem.CB5 malware, they can make profit by showing you the banners. Each view gives them a penny, but 100 views per day = $1. 1000 victims who watch 100 banners per day – $1000. Easy math, but sad conclusions. It is a bad choice to be a donkey for crooks.

How did I get this virus?

It is hard to line the origins of malware on your PC. Nowadays, things are mixed up, and distribution tactics used by adware 5 years ago can be used by spyware these days. But if we abstract from the exact spreading tactic and will think about why it has success, the reply will be quite simple – low level of cybersecurity understanding. People click on advertisements on weird sites, open the pop-ups they receive in their browsers, call the “Microsoft tech support” thinking that the weird banner that states about malware is true. It is essential to understand what is legitimate – to prevent misunderstandings when trying to determine a virus.

Microsoft tech support scam

Microsoft tech support scam page

Nowadays, there are two of the most extensive ways of malware distribution – bait e-mails and injection into a hacked program. While the first one is not so easy to avoid – you must know a lot to understand a fake – the 2nd one is very easy to address: just don’t use hacked applications. Torrent-trackers and other providers of “totally free” applications (which are, exactly, paid, but with a disabled license checking) are really a giveaway place of malware. And Trojan:Win32/Leonem.CB5 is simply amongst them.

How to remove the Trojan:Win32/Leonem.CB5 from my PC?

Trojan:Win32/Leonem.CB5 malware is extremely difficult to erase manually. It puts its documents in numerous places throughout the disk, and can restore itself from one of the parts. In addition, a range of changes in the windows registry, networking settings and Group Policies are really hard to find and revert to the initial. It is better to use a specific tool – exactly, an anti-malware program. GridinSoft Anti-Malware will definitely fit the most ideal for virus elimination goals.

Why GridinSoft Anti-Malware? It is really light-weight and has its detection databases updated just about every hour. Furthermore, it does not have such bugs and exploits as Microsoft Defender does. The combination of these details makes GridinSoft Anti-Malware perfect for taking out malware of any type.

Remove the viruses with GridinSoft Anti-Malware

  • Download and install GridinSoft Anti-Malware. After the installation, you will be offered to perform the Standard Scan. Approve this action.
  • Gridinsoft Anti-Malware during the scan process

  • Standard scan checks the logical disk where the system files are stored, together with the files of programs you have already installed. The scan lasts up to 6 minutes.
  • GridinSoft Anti-Malware scan results

  • When the scan is over, you may choose the action for each detected virus. For all files of Leonem the default option is “Delete”. Press “Apply” to finish the malware removal.
  • GridinSoft Anti-Malware - After Cleaning
How to Remove Trojan:Win32/Leonem.CB5 Malware

Name: Trojan:Win32/Leonem.CB5

Description: If you have seen a message showing the “Trojan:Win32/Leonem.CB5 found”, it seems that your system is in trouble. The Leonem virus was detected, but to remove it, you need to use a security tool. Windows Defender, which has shown you this message, has detected the malware. However, Defender is not a reliable thing - it is prone to malfunction when it comes to malware removal. Getting the Trojan:Win32/Leonem.CB5 malware on your PC is an unpleasant thing, and removing it as soon as possible must be your primary task.

Operating System: Windows

Application Category: Trojan

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References

  1. Read about malware types on GridinSoft Threat encyclopedia.

About the author

Wilbur Woodham

I was a technical writer from early in my career, and consider IT Security one of my foundational skills. I’m sharing my experience here, and I hope you find it useful.

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