How to Remove CCleaner Virus (Trojan.Floxif)

Hackers have successfully breached the popular software CCleaner to inject a malware code into it and affect millions of users worldwide. Malware researchers detected that the CCleaner security issue concerns two 32-bit versions of the software – v5.33.6162 and the cloud version 1.07.3191. It appears that hackers have managed to bundle the Trojan Floxif with the main installation file of these two CCleaner versions. Once the Trojan.Floxif infects the system it can harm your personal and PC privacy by performing various malicious activities.

This article provides removal help to all users affected by CCleaner Trojan.Floxif virus.

Manual Removal Guide
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More Details about CCleaner Virus

CCleaner is one of the most popular PC optimizing tools that become popular soon after its first release. However, the fresh hack of its two 32-bit versions 5.33.6162 and 1.07.3191 endangers the operation systems of all users who have recently installed the software. Concerning the high number of possibly affected systems, the CCleaner virus impact is extremely severe.

The analysis performed by malware experts reveal that the installation file of the app – CCleaner.exe has been compromised to carry out the infection. The infection primary happens via the Trojan.Floxif. The virus is designed to be delivered to endpoints by the legitimate CCleaner download servers. Another Trojan associated with the CCleaner virus is the Trojan.Nyetya.

The CCleaner virus authours’ have gently injected the malware code into the legit CCleaner executable file causing no interruptions of the normal app performance. The Trojan.Floxif virus can perform all malicious functionalities while the program is running. Furthermore, the virus is designed to bypass some security layers and penetrates unnoticeably the system.

Then CCleaner virus checks user system privileges and terminates its execution if the current user is not with administrator rights. Otherwise, the virus begins profiling the system and gathers information that is later transmitted to its Command and Control server. This data may include:

  • Saved passwords on the browsers.
  • Entered keystrokes.
  • Important documents.
  • Install other malware.
  • Data from external devices (USB, SD cards, etc.)
  • Screenshots of the desktop.
  • Network information. (IP, MAC, Next hop addresses, etc.)
  • Financial data.

The Trojan.Floxif has also the ability to download and install other software that can be another malware such as ransomware.

The Trojan.Floxif has also the ability to download and install other software that can be another malware such as ransomware.
One of the sure traits left on the system by Trojan.Floxif CCleaner virus is a created registry key with the name “Agomo”. It can be found when you enter the Windows Registry editor and search for the following string:

HKEY_LOCAL_MACHINE\SOFTWARE\Piriform\Agomo

As the Trojan aims to remain hidden on the infected machine it can create additional new registry entries in the Registry sub-keys below:

HKEY_CURRENT_USER\¬Software\¬Microsoft\¬Windows\¬CurrentVersion\Explorer\¬Advanced
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\Advanced\Folder\SuperHidden
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon

The Trojan.Floxif’s complex code allows it to enforce functionalities of various Windows system processes during the attack and in addition delete some system files. To prevent system and privacy harm you need to update CCleaner to its latest version. And here is how to check what version is the CCleaner you have installed on the PC:

  1. Open CCleaner
  2. Look the top-left corner of the window
  3. Check the version number under or next to the program name

Beware that even after the software update some malware leftovers will remain on the system so it still be infected and endangered by other malware intrusions. For a successful CCleaner virus removal follow the steps in the guide below. Regain your PC security now.

Remove CCleaner Virus from Windows PC

CCleaner virus is not easy to remove. Its manual removal can be challenging even for the tech savvy guys. However, there is no doubt that you should delete the threat as soon as possible from your computer. Otherwise, your sensitive data, the whole system as well as other computer systems are exposed to a serious risk of additional malware infections and privacy theft. Security specialists recommend the usage of an anti-malware tool for the best removal results.

WARNING! Manual removal of the CCleaner virus requires being familiar with system files and registries. Removing important data accidentally can lead to permanent system damage. If you don’t feel comfortable with manual instructions, download a powerful anti-malware tool that will scan your system for malware and clean it safely for you.

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SpyHunter anti-malware tool will diagnose all current threats on the computer. By purchasing the full version, you will be able to remove all malware threats instantly. Additional information about SpyHunter / Help to uninstall SpyHunter

CCleaner Virus – Manual Removal Steps

Start the PC in Safe Mode with Network

This will isolate all files and objects created by the ransomware so they will be removed efficiently. The steps bellow are applicable to all Windows versions.

1. Hit the WIN Key + R

2. A Run window will appear. In it, write msconfig and then press Enter

3. A Configuration box shall appear. In it Choose the tab named Boot

4. Mark Safe Boot option and then go to Network under it to tick it too

5. Apply -> OK

Show Hidden Files

Some ransomware threats are designed to hide their malicious files in the Windows so all files stored on the system should be visible.

1. Open My Computer/This PC

2. Windows 7

    – Click on Organize button
    – Select Folder and search options
    – Select the View tab
    – Go under Hidden files and folders and mark Show hidden files and folders option

3. Windows 8/ 10

    – Open View tab
    – Mark Hidden items option

how to make hidden files visible in Windows 8 10 bestsecuritysearch instructions

4. Click Apply and then OK button

Enter Windows Task Manager and Stop Malicious Processes

1. Hit the following key combination: CTRL+SHIFT+ESC

2. Get over to Processes

3. When you find suspicious process right click on it and select Open File Location

4. Go back to Task Manager and end the malicious process. Right click on it again and choose End Process

5. Next, you should go folder where the malicious file is located and delete it

Repair Windows Registry

1. Again type simultaneously the WIN Key + R key combination

2. In the box, write regedit and hit Enter

3. Type the CTRL+ F and then write the malicious name in the search type field to locate the malicious executable

4. In case you have discovered registry keys and values related to the name, you should delete them, but be careful not to delete legitimate keys

Click for more information about Windows Registry and further repair help

Preventive Security Measures

  • Enable and properly configure your Firewall.
  • Install and maintain reliable anti-malware software.
  • Secure your web browser.
  • Check regularly for available software updates and apply them.
  • Disable macros in Office documents.
  • Use strong passwords.
  • Don’t open attachments or click on links unless you’re certain they’re safe.
  • Backup regularly your data.
  • Gergana Ivanova

    Author : Gergana Ivanova

    Gergana Ivanova is computer security enthusiast who enjoys presenting the latest issues related to cyber security.


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