How to remove the efcca virus

Most antivirus programs identify efcca.dll as malware.

The free file information forum can help you find out how to remove it. If you have additional information about this file, please leave a comment or a suggestion for other users.

Click to Run a Free Virus Scan for the efcca.dll malware

Efcca.dll file information

The process does not contain any data about its author.

Description: Efcca.dll is not essential for Windows and will often cause problems. Efcca.dll is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 692,276 bytes (66% of all occurrences) or 331,872 bytes. 
This .dll file is a Browser Helper Object (BHO) that runs automatically every time you start your web browser. BHOs are not stopped by personal firewalls, because they are identified by the firewall as part of the browser itself. BHOs are often used by adware and spyware. IDs used by this BHO include 55B6AA9F-027E-40E9-8E51-90443556BF91 or CB1239A1-DCE7-4E59-AD1A-8C01E7DB3CF2 or 5A1F254D-BB66-40A2-BC0C-988FC79C6D06 or 2EB78ED0-F461-406F-A7CA-50E5598C5431. There is no information about the author of the file. The program has no visible window. The efcca.dll file is an unknown file in the Windows folder. The file is able to monitor web browsers. There is no detailed description of this service. It is not a Windows system file. Efcca.dll is able to record keyboard and mouse inputs, monitor applications and manipulate other programs. Therefore the technical security rating is 92% dangerous; however you should also read the user reviews.

Recommended: Identify efcca.dll related errors

Important: You should check the efcca.dll process on your PC to see if it is a threat. If efcca.dll has changed your browser's search engine and start page, you can recover your browser's default settings as follows:

Reset default browser settings for Internet-Explorer ▾
  1. In Internet Explorer, press the key combination Alt + X to open the Tools menu.
  2. Click Internet options.
  3. Click the Advanced tab.
  4. Click the Reset... button.
  5. Enable the Delete personal settings option.
This will reset your Internet Explorer to its default settings. Your browser will start with the familiar start page and search engine—without popups, ads, cookies, but all browser add-ons are deleted too [1]. Make cleaning up your browser and your computer simpler and safer with Security Task Manager.


User Comments

Starts when you open Windows Internet Explorer. VERY dangerous file. Remove it right away!

Summary: Average user rating of efcca.dll: based on 1 vote with 1 user comment. One user thinks efcca.dll is dangerous and recommends removing it.

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Best practices for resolving efcca issues

The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active efcca process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the efcca.dll on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.

A clean and tidy computer is the key requirement for avoiding PC trouble. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

Other processes

efcca.dll [all]