Floxif Malware [Trojan.Floxif] – How to Remove

What Is Trojan.Floxif?

The Floxif malware is an infection of the trojan type. It is crucial to mention that Trojan.Floxif is spread via CCleaner installers. This article will help you to remove the threat.

Malware researchers detected an infection which targets computers via the CCleaner 5.33.6162 version of the program. In fact, CCleaner, developed by Piriform, is a legitimate program designed to clean potentially unwanted files and invalid Windows Registry entries from a computer. First launched in 2004, the tool is one of the longest-established system cleaners, and as such, it is not malicious.

However, hackers managed to slither the Trojan.Floxif infection in CCleaner installers which drop a file on the computer and perform a variety of malicious activities. Besides being a keylogger, the Trojan may also steal your login details, financial information, and even download and install other malware.

If you have installed CCleaner on your computer, we recommend you to scan whether the Floxif trojan was dropped with the installer. To do so, navigate to the last part of the article.

CCleaner Trojan.Floxif – How Did I Get Infected?

The bad news is that if you have downloaded the affected versions of either CCleaner (5.33.6162) or CCleaner Cloud (1.07.3191), your computer has already been infected.

According to researchers, the strongest indicator of having this malware on your computer is that upon infection it creates a Windows Registry Sub-key called “Agomo”. It is located in the following registry sub-key:

HKEY_LOCAL_MACHINE\SOFTWARE\Piriform\Agomo

If you have this registry key on your computer, your computer has been compromised by the Trojan.Floxif.

Trojan.Floxif – Activity Analysis

The Floxif Trojan is a malware that has several versions. The activity of those versions, however, is rather similar. When the Floxif trojan has been started, it immediately executes a script that drops a .dll file, named symsrv.dll. The file is about 67 kilobytes in size and has the following location:

C:\Program Files\Common Files\System\symsrv.dll

Тo execute the malicious file when Windows boots up, the virus may add the following registry entry in the “Windows” sub-key, located in HKEY_LOCAL_MACHINE’\SOFTWARE\Microsoft\Windows NT\CurrentVersion\:

“AppInit_DLLs” = “C:\­Program Files\­Common Files\­System\­symsrv.dll”
“LoadAppInit_DLLs” = 1

In addition to this, Trojan.Floxif may also set these registry entries so that it remains hidden on your computer:

• 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

In those keys, entries are created with the following values in them:

• “ShowSuperHidden” = 0
• “NoDriveTypeAutoRun” = 145
• “Type” = “radio”
• “SFCDisable” = 4294967197

Another activity performed by this trojan is connecting with the following Windows application programming interfaces (APIs):

CredReadW (advapi32.dll)
CreateServiceA (advapi32.dll)
CreateServiceW (advapi32.dll)
OpenServiceA (advapi32.dll)
OpenServiceW (advapi32.dll)
WinVerifyTrust (WINTRUST.dll)
CreateFileW (kernel32.dll)
ExitProcess (kernel32.dll)
RegOpenKeyExA (kernel32.dll)
RegOpenKeyExW (kernel32.dll)
CreateProcessInternalW (kernel32.dll)
MessageBoxTimeoutW (user32.dll)
KiUserExceptionDispatcher (ntdll.dll)
WahReferenceContextByHandle (ws2help.dll)

Furthermore, the Trojan.Floxif malware also tries to delete system files from Windows itself:

%Program Files%\Common Files\System\symsrv.dll.dat
%Users%\Administrator\Local\Temp\…\*.tmp

The end goal of the malware is to steal information from your computer or install other malware on it. Besides collecting lists with programs installed on your PC, network information and unique identifiers, the threat may also connect to a remote host and download more malware. To store the stolen information, the Trojan.Floxif may create the following files:

%System Drive%\pagefile.pif
%System Drive%\autorun.inf
%Temp%\update.exe

Of those files, it executes the update.exe file automatically.

How to Detect and Remove Trojan.Floxif

In order to remove Trojan.Floxif malware from your computer, it is strongly recommended to follow the manual or automatic removal steps below. They are specifically designed to help you isolate and delete this dangerous threat.

Be advised that since Trojan.Floxif creates multiple objects on your computer and assumes partial control of it, it may be difficult to remove it manually. Thus, experts advise detecting and removing it automatically by installing and scanning your computer with an advanced anti-malware. This program will also make sure the threat is permanently gone and your system is protected against any future infections.

Ventsislav Krastev

Ventsislav is a cybersecurity expert at SensorsTechForum since 2015. He has been researching, covering, helping victims with the latest malware infections plus testing and reviewing software and the newest tech developments. Having graduated Marketing as well, Ventsislav also has passion for learning new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management, Network Administration and Computer Administration of System Applications, he found his true calling within the cybersecrurity industry and is a strong believer in the education of every user towards online safety and security.

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Preparation before removing CCleaner Trojan.Floxif.

Before starting the actual removal process, we recommend that you do the following preparation steps.

• Make sure you have these instructions always open and in front of your eyes.
• Do a backup of all of your files, even if they could be damaged. You should back up your data with a cloud backup solution and insure your files against any type of loss, even from the most severe threats.
• Be patient as this could take a while.

• Scan for Malware
• Fix Registries
• Remove Virus Files

Step 1: Scan for CCleaner Trojan.Floxif with SpyHunter Anti-Malware Tool

1. Click on the "Download" button to proceed to SpyHunter's download page.

Download

Malware Removal Tool

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It is recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria.

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2. After you have installed SpyHunter, wait for it to update automatically.

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3. After the update process has finished, click on the 'Malware/PC Scan' tab. A new window will appear. Click on 'Start Scan'.

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4. After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the 'Next' button.

If any threats have been removed, it is highly recommended to restart your PC.

Step 2: Clean any registries, created by CCleaner Trojan.Floxif on your computer.

The usually targeted registries of Windows machines are the following:

• HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
• HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
• HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
• HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce

You can access them by opening the Windows registry editor and deleting any values, created by CCleaner Trojan.Floxif there. This can happen by following the steps underneath:

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1. Open the Run Window again, type "regedit" and click OK.

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2. When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.

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3. You can remove the value of the virus by right-clicking on it and removing it. Tip: To find a virus-created value, you can right-click on it and click "Modify" to see which file it is set to run. If this is the virus file location, remove the value.

Step 3: Find virus files created by CCleaner Trojan.Floxif on your PC.

1.For Windows 8, 8.1 and 10.

For Newer Windows Operating Systems

1: On your keyboard press  + R and write explorer.exe in the Run text box and then click on the Ok button.

2: Click on your PC from the quick access bar. This is usually an icon with a monitor and its name is either “My Computer”, “My PC” or “This PC” or whatever you have named it.

3: Navigate to the search box in the top-right of your PC's screen and type “fileextension:” and after which type the file extension. If you are looking for malicious executables, an example may be "fileextension:exe". After doing that, leave a space and type the file name you believe the malware has created. Here is how it may appear if your file has been found:

N.B. We recommend to wait for the green loading bar in the navigation box to fill up in case the PC is looking for the file and hasn't found it yet.

2.For Windows XP, Vista, and 7.

For Older Windows Operating Systems

In older Windows OS's the conventional approach should be the effective one:

1: Click on the Start Menu icon (usually on your bottom-left) and then choose the Search preference.

2: After the search window appears, choose More Advanced Options from the search assistant box. Another way is by clicking on All Files and Folders.

3: After that type the name of the file you are looking for and click on the Search button. This might take some time after which results will appear. If you have found the malicious file, you may copy or open its location by right-clicking on it.

Now you should be able to discover any file on Windows as long as it is on your hard drive and is not concealed via special software.

CCleaner Trojan.Floxif FAQ

What Does CCleaner Trojan.Floxif Trojan Do?

The CCleaner Trojan.Floxif Trojan is a malicious computer program designed to disrupt, damage, or gain unauthorized access to a computer system.

It can be used to steal sensitive data, gain control over a system, or launch other malicious activities.

Can Trojans Steal Passwords?

Yes, Trojans, like CCleaner Trojan.Floxif, can steal passwords. These malicious programs are designed to gain access to a user's computer, spy on victims and steal sensitive information such as banking details and passwords.

Can CCleaner Trojan.Floxif Trojan Hide Itself?

Yes, it can. A Trojan can use various techniques to mask itself, including rootkits, encryption, and obfuscation, to hide from security scanners and evade detection.

Can a Trojan be Removed by Factory Reset?

Yes, a Trojan can be removed by factory resetting your device. This is because it will restore the device to its original state, eliminating any malicious software that may have been installed. Bear in mind, that there are more sophisticated Trojans, that leave backdoors and reinfect even after factory reset.

Can CCleaner Trojan.Floxif Trojan Infect WiFi?

Yes, it is possible for a Trojan to infect WiFi networks. When a user connects to the infected network, the Trojan can spread to other connected devices and can access sensitive information on the network.

Can Trojans Be Deleted?

Yes, Trojans can be deleted. This is typically done by running a powerful anti-virus or anti-malware program that is designed to detect and remove malicious files. In some cases, manual deletion of the Trojan may also be necessary.

Can Trojans Steal Files?

Yes, Trojans can steal files if they are installed on a computer. This is done by allowing the malware author or user to gain access to the computer and then steal the files stored on it.

Which Anti-Malware Can Remove Trojans?

Anti-malware programs such as SpyHunter are capable of scanning for and removing Trojans from your computer. It is important to keep your anti-malware up to date and regularly scan your system for any malicious software.

Can Trojans Infect USB?

Yes, Trojans can infect USB devices. USB Trojans typically spread through malicious files downloaded from the internet or shared via email, allowing the hacker to gain access to a user's confidential data.

About the CCleaner Trojan.Floxif Research

The content we publish on SensorsTechForum.com, this CCleaner Trojan.Floxif how-to removal guide included, is the outcome of extensive research, hard work and our team’s devotion to help you remove the specific trojan problem.

How did we conduct the research on CCleaner Trojan.Floxif?

Please note that our research is based on an independent investigation. We are in contact with independent security researchers, thanks to which we receive daily updates on the latest malware definitions, including the various types of trojans (backdoor, downloader, infostealer, ransom, etc.)

Furthermore, the research behind the CCleaner Trojan.Floxif threat is backed with VirusTotal.

To better understand the threat posed by trojans, please refer to the following articles which provide knowledgeable details.