Libcurl.so.4.5.0 is a browser-hijacker currently detected by ClamAV as unix.trojan.coinminer-9910195-0 or simply unix.trojan.coinminer.
The goal of the changes that Libcurl.so.4.5.0 makes in the infected browser are to turn the latter into a platform for aggressive online ads.
We understand that you might be worried about your computer’s safety and health if you currently have an app like Libcurl.so.4.5.0 installed on it. However, we need to tell you that this is not a real virus. Actual malware threats the likes of spyware, rootkits, Trojans or ransomware cryptoviruses are way more dangerous and harmful than an app like Libcurl.so.4.5.0 .
Obstructive and invasive pop-ups, ads and page-redirects, changes to the new-tab page or to the homepage of your browser as well as replacement of the toolbar and the search engine are all things that can happen to your Firefox, Chrome, Edge or maybe even Safari browsers if you have the invasive hijacker inside your system. The good news is that the symptoms we’ve just mentioned are likely not going to lead to any serious issues, especially if you take the necessary actions and remove the hijacker as soon as possible.
The problem many users tend to face here, however, is that it may be a bit difficult to fully uninstall a browser hijacker app like the one we are currently focusing on since most such applications are made in a way that allows them to remain on the computer for long periods of time and to even reinstall themselves after having been seemingly removed. However, with the help of the instructions that we have prepared for you in the removal guide at the bottom of this page, you should have no difficulty removing Libcurl.so.4.5.0 and bringing your browser back to its regular state.
Something you should know about the ads
Even if Libcurl.so.4.5.0 isn’t really a virus or some ransomware or Trojan horse, it’s still not advisable to postpone and procrastinate its removal and the reason for that is the fact it’s still possible that a hijacker like this one may lead to the exposure of your computer system to different hazards (albeit indirectly and not purposefully). What we are referring to here are the ads and the page redirects to different webpages that hijackers are typically known to generate.
While some of the commercial materials may be legitimate, others could be fake and deceitful and if you decide to explore them, you may get tricked into downloading more unwanted software and purchasing low-quality items and programs you really don’t need. Furthermore, many hackers heavily rely on malicious and compromised adverts as a means of getting their noxious malware infections inside more systems which further increases the importance of not allowing any advertising-oriented software to spam you with random advertisements while you are browsing the web.
Lastly, remember to be careful with the sources of program downloads that you use in the future as the main way users get hijackers installed on their computers is by downloading low-quality free applications and programs that have the browser redirect/hijacker bundled with them.
Some threats reinstall themselves if you don't delete their core files. We recommend downloading SpyHunter to remove harmful programs for you. This may save you hours and ensure you don't harm your system by deleting the wrong files.
As a quick fix, consider removing any extensions associated with Libcurl.so.4.5.0 from each of your browsers’ Extensions settings.
- Launch the default browser and choose More Tools (or Add-ons), then open Extensions from the side menu.
- Check the list of extensions to see whether the hijacker has introduced any unusual or suspicious ones. If this is the case, get rid of them.
- Extensions that you don’t want to keep or won’t use in the near future can safely be removed from your browser.
- Last but not least, check if your browser is up to date and download the most recent version.
You should follow the more thorough removal steps given below, if the quick fix above didn’t work to stop Libcurl.so.4.5.0 ‘s browser interference.
The advanced instructions that follow will have more success in ridding you off Libcurl.so.4.5.0 if you reboot the system in Safe Mode. This will limit the number of processes and applications running on your computer and make it easier to identify any behavior that may be linked to the hijacker.
Before you do that, however, we recommend you to bookmark this page so that you don’t lose it when you close the browser and restart your computer.
WARNING! READ CAREFULLY BEFORE PROCEEDING!
In this step, you will need to pay close attention to the programs that are running on your computer and the processes associated with them.
The Processes tab in Task Manager lets you see what programs are operating in the background of the system at any time. To open it, press Ctrl + Shift + Esc and click the Processes tab from the top of the Task Manager window.
Then search for any unknown processes that are using a significant share of your RAM or CPU. It’s a good idea to go a little further and research online every process that looks suspicious to see whether it has been flagged as potentially unwanted or dangerous.
You can also check a specific process by right-clicking on it and choosing Open File Location.
Next, use a powerful scanner like the one provided below to scan the files in that folder:
End the process if it turns out that its files are connected to any possibly harmful code and remove those files from the File Location Folder.
Next, select Uninstall a Program from Control Panel >> Programs and Features on your PC. Remove any unwanted or suspicious-looking applications that were installed on your computer around the time you began to experience hijacker symptoms by clicking the Uninstall option and following the steps from the uninstallation wizard.
After clicking the Uninstall button, you may be prompted by a pop-up window to decide whether or not to retain program settings or temporary data. Choose NO, and continue with the uninstallation.
After you uninstall any programs that you find potentially unwanted, type msconfig in the Windows search field (found in the Start menu).
Then, in the System Configuration window that opens, click on the Startup tab, uncheck any Startup items you don’t recognize or think are related to Libcurl.so.4.5.0 , and then click OK to apply your changes.
In the fourth step, please repeat the instructions below very carefully:
Simply hold down the Windows key and R to open a Run dialog box, then paste the following line into the box and hit Enter to continue.
A Notepad file named Hosts should open on the screen. Scroll the text of the file and check what is written under Localhost.
Let us know in the comments if you spot any virus creator IP addresses or other suspicious text. We’ll let you know if we find anything suspicious, once we analyze it.
Next, type Network Connections in the Windows search field and open it.
Then, open Properties from the menu that pops up when you right-click the network adapter that is currently in use.
After that, select Internet Protocol Version 4 (ICP/IP) from list of options, and then click the Properties button to see its properties.
Then, in the new window that appears, select Obtain DNS server automatically and click the Advanced options.
Then, in the new window, go to the DNS tab and remove any rogue DNS that is added in the field.
Attention! Before applying this step, please be aware of the risks related to dealing with registry files. Any change or deletion of entries in the registry may have a serious impact on the overall performance and stability of your OS. So, if you have any questions regarding the Registry, we recommend using a professional removal program or getting in touch with our team by posting a comment on this page.
Use WinKey + R to open a new Run box and type regedit. Click OK to open the Registry Editor window.
While in the Registry Editor, hold down Ctrl and F at the same time and type the name of the hijacker into the Find box. Select Find Next to start a search, and then remove the first result you find. Write the hijacker’s name down a second time, then use the Find function to look for another item related to the hijacker. Repeat this process until you no longer get any search results.
Next, visit the following three directories on the Registry’s left-hand menu to finish off your search:
- HKEY_CURRENT_USER—-Software—–Random Directory.
- HKEY_CURRENT_USER—-Software—Microsoft—-Windows—CurrentVersion—Run– Random.
- HKEY_CURRENT_USER—-Software—Microsoft—Internet Explorer—-Main—- Random.
See if you can find any keys (folders) with extremely long names, or whose names contain bizarre and seemingly random letter and number combinations. If you see anything in your registry that matches this criteria, remove it immediately.
Finally, we’ll explain to you how to guarantee that no traces of Libcurl.so.4.5.0 remain on your computer by completely cleaning out each browser that has been installed on it.
To begin, right-click on the browser’s shortcut icon and then choose Properties from the pop-up menu.
In the Properties window, go to > Shortcut and then delete everything placed in the Target box after .exe. After that, just click the OK button.
Now open the hijacked web browser and click the menu icon in its toolbar (on most browsers it is in the top-right corner). Here are some browser-specific instructions that can help you avoid confusion:
Remove Libcurl.so.4.5.0 from Internet Explorer:
Start IE, click >>> Manage Add-ons.
Find the threat —> Disable.
Look for anything unusual or hijacker-related in the Extensions section of your browser. Disabling and removing such items should be the standard procedure.
Next, go to >>> Internet Options and check the homepage URL. If you see that it has been changed with a sponsored one, type a homepage address that you trust and click on > Apply.
Remove Libcurl.so.4.5.0 from Firefox:
Start Firefox, click and quickly navigate to Add-ons, then open Extensions (the puzzle icon on the left) and Disable, then Remove any potentially unwanted extensions that you think are causing you browsing interruption and disturbance.
Remove Libcurl.so.4.5.0 from Chrome:
When using Chrome, click on the main menu icon top right, go to More Tools, then Extensions to get to the list of installed extensions. Remove the extensions that are causing you trouble.
Remember to repeat the instructions above in all browsers installed on your system, regardless of how frequently you use them if you want to prevent Libcurl.so.4.5.0 from re-appearing and disturbing you again.
If the problem with Libcurl.so.4.5.0 continues, a malware removal program may be needed. It’s best to scan and clean your computer using the software listed on this page to find and delete any malicious files as quickly as possible. You will also be protected in the future by having such software.