Trojan:Win32/Dorv.B!rfn Removal And Description

by Berta Bilbao | September 3, 2015 | 0 Comments malware, trojan

Trojan:Win32/Dorv.B!rfn – How Did I Get Infected With?More About Trojan:Win32/Dorv.B!rfn Removing Trojan:Win32/Dorv.B!rfn

Name	Trojan:Win32/Dorv.B!rfn
Type	Trojan Horse
Short Description	May download other malware on the computer, collect keystrokes, allow third-party access, generate traffic to other sites and others, control drivers and PC hardware, etc.
Symptoms	Unfamiliar processes, PC Slowdowns, Disabled Firewall, etc.
Distribution Method	Spam mails. MiTM attacks, malicious redirects.
Detection tool	Download Malware Removal Tool, to See If Your System Has Been Affected By Trojan:Win32/Dorv.B!rfn

This particular type of trojan is reported by ESG security researchers to distribute mainly via drive-by downloads in the form of Java or Flash Player updates. It could also be embedded with free software downloaded from unfamiliar third parties. It is believed to be used for several different purposes – monitoring the user’s activities, collecting keystrokes and obtaining passwords and download other malware to the infected computer. Most Trojans run active processes in the Windows Task Manager that are hidden from the user. Experts advise to take immediately measures in case you believe you have a trojan horse in your machine since it becomes utterly defenseless.

Trojan:Win32/Dorv.B!rfn – How Did I Get Infected With?

This particular type of malware may affect user PCs via several different ways. One of them is via massive spam mail campaigns that contain infected attachments in them. Another method of infection is by being redirected to a malicious web link in case you have an installed ad-supported application or any similar PUP (Potentially Unwanted Program) on your computer. PUPs may be indirectly dangerous, and they install themselves on users’ PCs in the background of the setup programs of third-party downloaded freeware. Third-party software providers may bundle software for profits and they usually write it down in their EULA agreements. In order to quickly find bundled applications in third-party installers, it is advisable to check license agreements with particular checking software, like EULAlyzer, for example.

More About Trojan:Win32/Dorv.B!rfn

This trojan is reported by security investigators to focus on the %temp% folder, creating files there with the purpose of evading security scans. Although it is not confirmed the Trojan may use process migration to deceive antivirus programs that they have eliminated it, while in reality it may only transfer the malicious process to another concealed file within your hard drive.

This Trojan is believed to install dangerous ransomware, like CryptoWall to encrypt user data and extort victims for funds. It is also supposed to disable all firewalls in the affected machine with the sole purpose of allowing other parties to access the computer from a distance. More to it than that it may use mechanisms that enable it to generate traffic to other websites, mainly for the purpose of profit making.

Also, this Trojan may assume partial control over the PC hardware, like web camera, cd/DVD player, keyboard, mouse control and others. Experts strongly advise downloading an anti-malware tool in case you believe you have the threat because you may become an unsuspecting accomplice to this vile threat and may endanger other devices.

Removing Trojan:Win32/Dorv.B!rfn

Deleting this Trojan in full may be a bit more complicated task. The trick is to catch the threat in time, before it has downloaded other malicious files on the computer, like a rootkit virus for example. It is highly recommended to backup your data and reinstall you Windows completely in case you cannot establish for how long you have had this threat present. After that you should employ an external firewall to double your protection like ZoneAlarm and an updated anti-malware program that will both assist in the fast detection of any new threats on your computer.

In case you do not or cannot reinstall your operating system, it is advisable to follow the step-by-step instructions below to successfully elicit the threat from your machine.

1. Start Your PC in Safe Mode to Remove Trojan:Win32/Dorv.B!rfn.

For Windows XP, Vista, 7 systems:

1. Remove all CDs and DVDs, and then Restart your PC from the “Start” menu.
2. Select one of the two options provided below:

– 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.

For Windows 8, 8.1 and 10 systems:
Step 1: Open the Start Menu

Step 2: Whilst holding down Shift button, click on Power and then click on Restart.
Step 3: After reboot, the aftermentioned menu will appear. From there you should choose Troubleshoot.

Step 4: You will see the Troubleshoot menu. From this menu you can choose Advanced Options.

Step 5: After the Advanced Options menu appears, click on Startup Settings.

Step 6: Click on Restart.

Step 7: A menu will appear upon reboot. You should choose Safe Mode by pressing its corresponding number and the machine will restart.

2. Remove Trojan:Win32/Dorv.B!rfn automatically by downloading an advanced anti-malware program.

To clean your computer you must 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:Win32/Dorv.B!rfn associated objects.

NOTE! Substantial notification about the (Trojan:Win32/Dorv.B!rfn)threat: Manual removal of (Trojan:Win32/Dorv.B!rfn) requires interference with system files and registries. Thus, it can cause damage to your PC. Even if your computer skills are not at a professional level, don’t worry. You can do the removal yourself just in 5 minutes, using a malware removal tool.

Berta Bilbao

Berta is a dedicated malware researcher, dreaming for a more secure cyber space. Her fascination with IT security began a few years ago when a malware locked her out of her own computer.

Guide 1: How to Remove Trojan:Win32/Dorv.B!rfn from Windows.
Guide 2: Get rid of Trojan:Win32/Dorv.B!rfn on Mac OS X.
Guide 3: Remove Trojan:Win32/Dorv.B!rfn in Google Chrome.

Guide 4: Erase Trojan:Win32/Dorv.B!rfn from Mozilla Firefox.
Guide 5: Uninstall Trojan:Win32/Dorv.B!rfn from Microsoft Edge.
Guide 6: Remove Trojan:Win32/Dorv.B!rfn from Safari.
Guide 7: Eliminate Trojan:Win32/Dorv.B!rfn from Internet Explorer.
Guide 8: Disable Trojan:Win32/Dorv.B!rfn Push Notifications in Your Browsers.

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

How to Remove Trojan:Win32/Dorv.B!rfn from Windows.

Step 1: Boot Your PC In Safe Mode to isolate and remove Trojan:Win32/Dorv.B!rfn

OFFER

Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!

We Recommend To Scan Your PC with SpyHunter

Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter's malware removal tool to remove the malware threats. Read our SpyHunter 5 review. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria

1. Hold Windows key() + R

2. The "Run" Window will appear. In it, type "msconfig" and click OK.

3. Go to the "Boot" tab. There select "Safe Boot" and then click "Apply" and "OK".

Tip: Make sure to reverse those changes by unticking Safe Boot after that, because your system will always boot in Safe Boot from now on.

4. When prompted, click on "Restart" to go into Safe Mode.

5. You can recognise Safe Mode by the words written on the corners of your screen.

Step 2: Uninstall Trojan:Win32/Dorv.B!rfn 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. To do that:

1. Hold the Windows Logo Button and "R" on your keyboard. A Pop-up window will appear.

2. In the field type in "appwiz.cpl" and press ENTER.

3. This will open a window with all the programs installed on the PC. Select the program that you want to remove, and press "Uninstall"

Follow the instructions above and you will successfully uninstall most programs.

Step 3: Clean any registries, created by Trojan:Win32/Dorv.B!rfn on your computer.

The usually targeted registries of Windows machines are the following:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce

You can access them by opening the Windows registry editor and deleting any values, created by Trojan:Win32/Dorv.B!rfn there. This can happen by following the steps underneath:

1. Open the Run Window again, type "regedit" and click OK.

2. When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.

3. You can remove the value of the virus by right-clicking on it and removing it.

Tip: To find a virus-created value, you can right-click on it and click "Modify" to see which file it is set to run. If this is the virus file location, remove the value.

IMPORTANT!
Before starting "Step 4", please boot back into Normal mode, in case you are currently in Safe Mode.
This will enable you to install and use SpyHunter 5 successfully.

Step 4: Scan for Trojan:Win32/Dorv.B!rfn with SpyHunter Anti-Malware Tool

1. Click on the "Download" button to proceed to SpyHunter's download page.

Download

Malware Removal Tool

It is recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria.

2. After you have installed SpyHunter, wait for it to update automatically.

3. After the update process has finished, click on the 'Malware/PC Scan' tab. A new window will appear. Click on 'Start Scan'.

4. After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the 'Next' button.

If any threats have been removed, it is highly recommended to restart your PC.

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Get rid of Trojan:Win32/Dorv.B!rfn from Mac OS X.

Step 1: Uninstall Trojan:Win32/Dorv.B!rfn and remove related files and objects

OFFER

Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!

We Recommend To Scan Your Mac with SpyHunter for Mac

Keep in mind, that SpyHunter for Mac needs to purchased to remove the malware threats. Click on the corresponding links to check SpyHunter’s EULA and Privacy Policy

1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:

2. Find Activity Monitor and double-click it:

3. In the Activity Monitor look for any suspicious processes, belonging or related to Trojan:Win32/Dorv.B!rfn:

Tip: To quit a process completely, choose the “Force Quit” option.

4. Click on the "Go" button again, but this time select Applications. Another way is with the ⇧+⌘+A buttons.

5. In the Applications menu, look for any suspicious app or an app with a name, similar or identical to Trojan:Win32/Dorv.B!rfn. If you find it, right-click on the app and select “Move to Trash”.

6: Select Accounts, after which click on the Login Items preference. Your Mac will then show you a list of items that start automatically when you log in. Look for any suspicious apps identical or similar to Trojan:Win32/Dorv.B!rfn. Check the app you want to stop from running automatically and then select on the Minus (“-“) icon to hide it.

7: Remove any left-over files that might be related to this threat manually by following the sub-steps below:

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:Win32/Dorv.B!rfn 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:

Disclaimer! If you are about to tamper with Library files on Mac, be sure to know the name of the virus file, because if you delete the wrong file, it may cause irreversible damage to your MacOS. Continue on your own responsibility!

1: Click on "Go" and Then "Go to Folder" as shown underneath:

2: Type in "/Library/LauchAgents/" and click Ok:

3: Delete all of the virus files that have similar or the same name as Trojan:Win32/Dorv.B!rfn. If you believe there is no such file, do not delete anything.

You can repeat the same procedure with the following other Library directories:

→ ~/Library/LaunchAgents
/Library/LaunchDaemons

Tip: ~ is there on purpose, because it leads to more LaunchAgents.

Step 2: Scan for and remove Trojan:Win32/Dorv.B!rfn files from your Mac

When you are facing problems on your Mac as a result of unwanted scripts and programs such as Trojan:Win32/Dorv.B!rfn, the recommended way of eliminating the threat is by using an anti-malware program. SpyHunter for Mac offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.

Click the button below below to download SpyHunter for Mac and scan for Trojan:Win32/Dorv.B!rfn:

Download

SpyHunter for Mac

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Remove Trojan:Win32/Dorv.B!rfn 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.

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Erase Trojan:Win32/Dorv.B!rfn 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.

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Uninstall Trojan:Win32/Dorv.B!rfn 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.

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Remove Trojan:Win32/Dorv.B!rfn 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:Win32/Dorv.B!rfn will be removed.

How to Reset Safari
IMPORTANT: Before resetting Safari make sure you back up all your saved passwords within the browser in case you forget them.

Start Safari and then click on the gear leaver icon.

Click the Reset Safari button and you will reset the browser.

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Eliminate Trojan:Win32/Dorv.B!rfn 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.