> VilmaTech Blog > How to Remove JS/Blacole.OU, Manual Removal Instruction

How to Remove JS/Blacole.OU, Manual Removal Instruction

JS/Blacole.OU Tech Introduction

JS/Blacole.OU is an invasive JavaScript Trojan infection that can be connected to remote hackers using a distant Comman-and -Control (C&C) server. It is usually added into genuine websites that have been compromised by malware distributors. For the purpose of corrupting a compromised website, JS/Blacole.OU infection will inject its malevolent codes into it. Suppose that an Internet users may be unwillingly rerouted to the hijacked web page, this type of Trojan infection will sneak into victim’s computer without any authorization or knowledge. Meanwhile, the malicious payload of JS/Blacole.OU is being popularly delivered by a security exploit kit such as BlackHole, which is known as one of the most prevalent web threat, capable of excavating all possible system security vulnerabilities. Apart from those spread approaches, JS/Blacole.OU virus is also believed to emanate from downloads or updates of certain applications, some examples of which are pirated or illegally acquired software applications.

While running in the system, JS/Blacole.OU may insert its related add-ons, extensions, or keyloggers into affected web browsers so as to track user’s confidential data, and then pass it to remote hackers. This may include user’s passwords, online backing credentials, or other sensitive personal information. Some PC users who are suffering from JS/Blacole.OU may also realize the slow performance of computer. This is because JS/Blacole.OU can always take up large amounts of computing resources to result in system tardiness. Another emblematic property of JS/Blacole.OU should be the backdoor activities. To be specific, JS/Blacole.OU can often acts as a backdoor, which is noted for the attributes offering unauthorized access and control to affected Windows for remote hackers. It can easily tell that JS/Blacole.OU without being removed timely can be capable of triggering unimaginable damage and data loss for victims. As a result, it is urgent to clean up JS/Blacole.OU from computer as long as being informed of its presence.

Additional Tip: If you meet problems during the process of removing JS/Blacole.OU threat, and do not want to make mistake, you are welcome to start a live chat with VilmaTech Certified 24/7 online agents here to get real-time tech support.

live chat

Why does Auto Removal Cannot Remove JS/Blacole.OU

Some PC users may try to remove JS/Blacole.OU with the aid of their trusted antivirus software programs. However, when the Windows reboots, JS/Blacole.OU may come back over and over again (Virus Similar to JS/Blacole.OU). The original reason is JS/Blacole.OU is a tricky infection which is programmed with rootkit capabilities to evade detection and full removal by anti-malware applications or other security tools. Furthermore, as long as it being installed on PC, it will constantly change the names of its files and file folders embedded in kernel system to escape auto removal. Thereupon it is strongly recommended to get rid of JS/Blacole.OU virus by means of the almighty manual removal, so that all the components of the virus could be removed permanently.

Manually Remove JS/Blacole.OU Step by Step

1. Kill the process of JS/Blacole.OU virus.

  • Start Windows Task Manager by hiting Ctrl+Alt+Delete keys together.
  • Click on Process tab in it.
  • Scroll down and search for the process of JS/Blacole.OU.
  • Right click to end up its process.

task manager end process

2. Show hidden files of JS/Blacole.OU before removing all its components.

  • Click on Start menu on the desktop.
  • Click on  Control Panel option.

controlp wondows

  • Select Appearance and Personalization.
  • Click on Folder Options link.


  • Click on the View tab in Folder Options window.


  • Choose the Show hidden files, folders, and drives under the Hidden files and folders category.
  • Confirm OK.

Additional steps for Windows 8:

  • Click on Start menu on the desktop.
  • Choose Windows Explorer icon.


  • In Libraries window, click View tab.


  • Select Folder Options.
  • Click View tab.
  • Under Advanced settings, select Show hidden files, folders, and drives radio button under Hidden files and folders category.


3. Remove files related to JS/Blacole.OU.

local disk c
%Documents and Settings%\[UserName]\Application Data\[random]
%AllUsersProfile%\Application Data\.dll
%AllUsersProfile%\Application Data\.exe

4. Get rid of all registry entries of JS/Blacole.OU virus.

  • Click “Start” button and selecting “Run.” Type “regedit” in the search box.
  • Press Enter.


  • Remove all the following registry files of JS/Blacole.OU.

registry editor2

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run “[RANDOM]”
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run “[RANDOM].exe”

Video Guide on How to Safely Backup Windows Registry

Summary of JS/Blacole.OU

JS/Blacole.OU has been recognized as a high-risk JavaScript Trojan infection that can sneak into a targeted computer without any permission or knowledge. It can be often added into compromised websites, regardless of which browser you are using, with the aid of advanced hack techniques. This may be revolved with common-used browsers such as Internet Explorer, Mozilla Firefox and Google Chrome. Once being installed, this type of Trojan infection will immediately spread its codes and files into kernel system for the purpose of making chaos. In consequence, some victims may notice the slow performance of computer, numerous pop-up ads may keep displaying on the screen out of control. Except those apparent symptoms, JS/Blacole.OU may directly install its related extensions or keyloggers in affected web browser for the purpose of stealing user’s confidential data. Meanwhile, JS/Blacole.OU virus may even acts as a backdoor, which could allow remote hackers to access targeted machine without user’s awareness. In addition, it also can be used by cyber crooks to drop and install additional malware on compromised machine to perform further damage. It is evident that users are obliged to get rid of JS/Blacole.OU virus once being informed of its existence. Anyhow, auto removal of antivirus may have a very low chance to clean up JS/Blacole.OU from computer. In this case, you can adopt the helpful manual removal to erase all its codes, registry files and leftovers.

Tip: Cannot remove JS/Blacole.OU virus on your own? Meeting problems during the manual removal of JS/Blacole.OU? If so, please be free to contact VilmaTech 24/7 online experts here to resolve your issue properly and effectively.

live chat

Comments are closed.

Latest Posts