|Short Description||The Trojan Horse is designed to generate intrusive advertisements and pop-ups. It can also install a rootkit.|
|Symptoms||Intrusive ads and pop-ups – fake system alerts, rogue software promotions, links to adult content, etc.|
|Distribution Method||Spam emails (via mass-mailing worms) p2p file sharing, drive-by downloads (compromised pages).|
|Detection tool||Download Malware Removal Tool, to See If Your System Has Been Affected By Trojan.Vundo|
According to security research, the infamous Vundo malware may be active again. Two executable processes have been recently monitored to contain the malicious piece – is154522.exe (reported by HerdProtect) and Install.exe (reported by VirusTotal). Trojan.Vundo, also known as VirtuMonde, VirtuMundo, and MS Juan, is classified as a Trojan horse that downloads files and generates pop-up advertisements. The malware is typically spread through spam email campaigns. Other distribution methods are also not surprising – p2p file sharing and drive-by downloads. Trojan.Vundo may also be dropped by other malware, such as Trojan downloaders and Trojan droppers.
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Trojan.Vundo Technical Resume
Trojan.Vundo has been monitored to drop malicious executables on targeted systems. The names of the files can be bland (such as install.exe), so that the users are tricked into opening and running them.
However, Vundo can be dropped by other malicious software, predominantly by worms. Two mass-mailing worms have been reported to spread the Trojan:
Researchers have concluded that Trojan.Vundo was created for the purpose of displaying advertisements – such as pop-ups. The Trojan can also inject ads into the victim’s search results.
The pop-ups displayed by Trojan.Vundo can be:
- Fake scan alerts made to look like legitimate AV software.
- System errors.
- Pop-ups prompting users to download rogue applications.
- Adult-themed ads and services.
Clicking on the pop-ups generated by Trojan.Vundol will redirect the user to malicious websites. In addition, once the threat is activated, the user can experience difficult accessing certain pages or running an anti-virus program.
is154522.exe and Install.exe are the two most recent files, associated directly with Trojan.Mundo.
According to researchers at Symantec, latest Trojan.Vundo types have become more sophisticated with time. Some of them may even include rootkit capabilities or can exploit local vulnerabilities. Moreover, Trojan.Vundo can even have file-encrypting skills and act as ransomware, extorting money from the victim, etc.
Here is a list of heuristic detections of Trojan.Vundo:
→Suspicious.Vundo, Suspicious.Vundo.2, Suspicious.Vundo.5, Packed.Generic.295, Packed.Generic.254, Packed.Generic.324, Packed.Vuntid!gen1, Packed.Vuntid!gen2, Trojan.Vundo.B!inf, Trojan.Vundo!gen1, Trojan.Vundo!gen2, Trojan.Vundo!gen3, Trojan.Vundo!gen5, Trojan.Vundo!gen7, Trojan.Vundo!gen8
Here is a list of detection names by various AV providers:
- DR/Virtumonde.tmj.40 (Avira Antivirus)
- Win32:Akan (Avast)
- MemScan:Trojan.FakeAlert.AJF (BitDefender)
- Trojan.DownLoader.50219 (Dr.Web)
- Win32/Kryptik.AD (variant) (ESET NOD32)
- MemScan:Trojan.FakeAlert.AJF (F-Secure)
- Trojan.Win32.Monder (Kaspersky)
- Artemis!265AC9F5CE3F (McAfee)
- Mal_Vundo-31 (TrendMicro)
Trojan.Vundo Removal Report
The threat and its various examples can be removed automatically by running a powerful anti-spyware tool. Keep in mind that Trojan.Vundo can install a rootkit on the infected system. Removing the rootkit is crucial to restoring the system. You should run AV software that has proven to be effective in detecting and removing rootkits.
Follow closely the removal manual provided below. If you have any questions or difficulties in removing the Trojan, join our security forum. Our team of security experts will be happy to assist you.
Step 1: Start Your PC in Safe Mode to Remove Trojan.Vundo.
Removing Trojan.Vundo from Windows XP, Vista, 7 systems:
1. Remove all CDs and DVDs, and then Restart your PC from the “Start” menu.
– For PCs with a single operating system: Press “F8” repeatedly after the first boot screen shows up during the restart of your computer. In case the Windows logo appears on the screen, you have to repeat the same task again.
– For PCs with multiple operating systems: Тhe arrow keys will help you select the operating system you prefer to start in Safe Mode. Press “F8” just as described for a single operating system.
3. As the “Advanced Boot Options” screen appears, select the Safe Mode option you want using the arrow keys. As you make your selection, press “Enter“.
4. Log on to your computer using your administrator account
While your computer is in Safe Mode, the words “Safe Mode” will appear in all four corners of your screen.
Removing Trojan.Vundo from Windows 8, 8.1 and 10 systems:
Whilst holding down Shift button, click on Power and then click on Restart.
A menu will appear upon reboot. You should choose Safe Mode by pressing its corresponding number and the machine will restart and boot into Safe Mode so you can scan for and remove Trojan.Vundo.
Step 2: Remove Trojan.Vundo automatically by downloading an advanced anti-malware program.
To clean your computer you should download an updated anti-malware program on a safe PC and then install it on the affected computer in offline mode. After that you should boot into safe mode and scan your computer to remove all Trojan.Vundo associated objects.
- Guide 1: How to Remove Trojan.Vundo from Windows.
- Guide 2: Get rid of Trojan.Vundo from Mac OS X.
- Guide 3: Remove Trojan.Vundo from Google Chrome.
- Guide 4: Erase Trojan.Vundo from Mozilla Firefox.
- Guide 5: Uninstall Trojan.Vundo from Microsoft Edge.
- Guide 6: Remove Trojan.Vundo from Safari.
- Guide 7: Eliminate Trojan.Vundo from Internet Explorer.
How to Remove Trojan.Vundo from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove Trojan.Vundo
Step 2: Uninstall Trojan.Vundo and related software from Windows
Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it.
Step 3: Clean any registries, created by Trojan.Vundo on your computer.
The usually targeted registries of Windows machines are the following:
You can access them by opening the Windows registry editor and deleting any values, created by Trojan.Vundo there. This can happen by following the steps underneath:
Get rid of Trojan.Vundo from Mac OS X.
Step 1: Uninstall Trojan.Vundo and remove related files and objects
1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:
- Go to Finder.
- In the search bar type the name of the app that you want to remove.
- Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
- If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.
In case you cannot remove Trojan.Vundo via Step 1 above:
In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:
You can repeat the same procedure with the following other Library directories:
Tip: ~ is there on purpose, because it leads to more LaunchAgents.
Step 2: Scan for and remove malware from your Mac
When you are facing problems on your Mac as a result of unwanted scripts, programs and malware, the recommended way of eliminating the threat is by using an anti-malware program. Combo Cleaner offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.
Remove Trojan.Vundo from Google Chrome.
Step 1: Start Google Chrome and open the drop menu
Step 2: Move the cursor over "Tools" and then from the extended menu choose "Extensions"
Step 3: From the opened "Extensions" menu locate the unwanted extension and click on its "Remove" button.
Step 4: After the extension is removed, restart Google Chrome by closing it from the red "X" button at the top right corner and start it again.
Erase Trojan.Vundo from Mozilla Firefox.
Step 1: Start Mozilla Firefox. Open the menu window
Step 2: Select the "Add-ons" icon from the menu.
Step 3: Select the unwanted extension and click "Remove"
Step 4: After the extension is removed, restart Mozilla Firefox by closing it from the red "X" button at the top right corner and start it again.
Uninstall Trojan.Vundo from Microsoft Edge.
Step 1: Start Edge browser.
Step 2: Open the drop menu by clicking on the icon at the top right corner.
Step 3: From the drop menu select "Extensions".
Step 4: Choose the suspected malicious extension you want to remove and then click on the gear icon.
Step 5: Remove the malicious extension by scrolling down and then clicking on Uninstall.
Remove Trojan.Vundo from Safari.
Step 1: Start the Safari app.
Step 2: After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.
Step 3: From the menu, click on "Preferences".
Step 4: After that, select the 'Extensions' Tab.
Step 5: Click once on the extension you want to remove.
Step 6: Click 'Uninstall'.
A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the Trojan.Vundo will be removed.
Eliminate Trojan.Vundo from Internet Explorer.
Step 1: Start Internet Explorer.
Step 2: Click on the gear icon labeled 'Tools' to open the drop menu and select 'Manage Add-ons'
Step 3: In the 'Manage Add-ons' window.
Step 4: Select the extension you want to remove and then click 'Disable'. A pop-up window will appear to inform you that you are about to disable the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and click 'Disable'.
Step 5: After the unwanted extension has been removed, restart Internet Explorer by closing it from the red 'X' button located at the top right corner and start it again.