Trojan:Win32/Dorv.B!rfn Removal And Description - How to, Technology and PC Security Forum |

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

TypeTrojan Horse
Short DescriptionMay 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.
SymptomsUnfamiliar processes, PC Slowdowns, Disabled Firewall, etc.
Distribution MethodSpam mails. MiTM attacks, malicious redirects.
Detection toolDownload Malware Removal Tool, to See If Your System Has Been Affected By Trojan:Win32/Dorv.B!rfn

warning-trojanThis 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
Windows-10-0 (1)
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.
Windows-10-2 (1)
Step 5: After the Advanced Options menu appears, click on Startup Settings.
Windows-10-3 (1)
Step 6: Click on Restart.
Windows-10-5 (1)
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.

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