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Cinobi Trojan Removal Guide — Restore Your PC From Infections

This article has been created in order to explain what is the Cinobi Trojan and how to remove this malware completely from your computer.

The Cinobi Trojan is a newly discovered dangerous Trojan that infects computers and uses DNS technology to infect. The malware contains multiple dangerous components which will be started when the infection occurs. Our removal guide features a detailed explanation of the Trojan’s mechanisms of operation, as well as instructions on restoring the infected computers from the infections.

Threat Summary

Name Cinobi Trojan
Type Trojan Horse Virus
Short Description Silently infects the target machines and modifies key applications and system services.
Symptoms The user may not experience any signs of infiltration.
Distribution Method Malicious Files, Malicious E-Mails
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The Cinobi Trojan is a new banking Trojan which is currently being spread in an active campaign targeting mainly Japanese users. The active campaign is called Operation Overtrap which is set mainly against users of Japanese online banking services. The available information so far shows that the first attacks have started back in April 2019.

At this moment there are three possible infection sources. The phishing emails are the main source of infections. The email messages are designed to appear as notifications which appear as being sent by online banks and e-banking services. When these pages are visited links to virus files will be embedded. These links can be placed in text hyperlinks, multimedia files and etc. Another type of phishing messages will require that the victims run a malware payload — they can be executable files or macro-infected documents. When they are run the virus infection will happen. The criminals have also created custom exploit kits that are used to deliver malware via dangerous ads. In September last year a lot of victims were made by targeting Internet Explorer web browser users. Links to the exploit code has been posted on various social networks by using fake or stolen accounts.

The exploit kit will deliver a binary code that does not appear to include virus code. It is very possible that the captured samples are still in a test phase. These “clean” files are categorized as being sent by a new emerging weappon called the Bottle Exploit Kit. The Cinibo Trojan will be delivered through it — the exploit kit uses mainly fake messages which are sent over social networks. The other mechanism is the use of malvertising ads.

The custom exploit kit uses a vulnerability tracked in the CVE-2018-15982 advisory which affects the Adobe Flash Player which is used to playback multimedia content. Another mechanism which it leverages is a bug called CVE-2018-8174 which is a security issue which is described as a VBScript remote code execution issue. The Cinobi Trojan will infect targets if they access the malware pages through unpatched web browsers. Most of the infections have happened in February this year.

The Trojan is currently known to have two versions — the first one uses a DLL library injection payload which will act against the installed web browsers. Such attacks are done in order to grab the stored information contain in them. This version of the Cinobi Trojan can be used to alter incoming and outgoing web traffic. The plan of the hackers is to intercept and modify form data related to online banking services. The second version is an updated version of the threat which will add a Tor proxy service which is used to relay the traffic to the hacker-controlled server.

The infection will run through several stages of infection. The first stage will include an initial language check — the virus engine will check whether or not the local regional settings are set to Japanese. If the check passes then the Cinoi Trojan will continue with the infection. The virus engine will download a legitimate unzip.exe application and a local Tor client into the local hard drive contents. From there on they will be renamed and run with a custom configuration file which will download the main malware files and start them. The second stage involves the the download and execution of the local Trojan horse infection and its associated configuration files. They come in encrypted form and will be decrypted on the local machines. The start of the infection will begin with a spooler service configuration change followed by process manipulation. The Trojan engine will disable the following web services: UsoSvc, Wuauserv, WaaSMedicSvc, SecurityHealthService and DisableAntiSpyware. The Tor files will be copied and extracted to the %PUBLIC% folder. To make it harder to detect the infections the executable files will be renam.

An advanced DLL library injection will be done which will make it very hard to remove existing infections. The Cinobi Trojan will hookup to system and important processes that make network connections using Windows sockets. Through them the Trojan activities will take place — the local client will establish a secure connection to the remote hacker-controlled server. This will allow the criminals to take over control of the systems, steal files and gather sensitive information about the victim systems.

Remove Cinobi Effectively from Windows

In order to fully get rid of this Trojan, we advise you to follow the removal instructions underneath this article. They are made so that they help you to isolate and then delete the Cinobi Trojan either manually or automatically. If manual removal represents difficulty for you, experts always advise to perform the removal automatically by running an anti-malware scan via specific software on your PC. Such anti-malware program aims to make sure that the Cinobi is fully gone and your Windows OS stays safe against any future malware infections.

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Martin Beltov

Martin graduated with a degree in Publishing from Sofia University. As a cyber security enthusiast he enjoys writing about the latest threats and mechanisms of intrusion.

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How to Remove Cinobi Trojan from Windows.


Step 1: Boot Your PC In Safe Mode to isolate and remove Cinobi Trojan

OFFER

Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your PC with SpyHunter

Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter's malware removal tool to remove the malware threats. Read our SpyHunter 5 review. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria

1. Hold Windows key() + R


2. The "Run" Window will appear. In it, type "msconfig" and click OK.


3. Go to the "Boot" tab. There select "Safe Boot" and then click "Apply" and "OK".
Tip: Make sure to reverse those changes by unticking Safe Boot after that, because your system will always boot in Safe Boot from now on.


4. When prompted, click on "Restart" to go into Safe Mode.


5. You can recognise Safe Mode by the words written on the corners of your screen.


Step 2: Uninstall Cinobi Trojan and related software from Windows

Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:


1. Hold the Windows Logo Button and "R" on your keyboard. A Pop-up window will appear.


2. In the field type in "appwiz.cpl" and press ENTER.


3. This will open a window with all the programs installed on the PC. Select the program that you want to remove, and press "Uninstall"
Follow the instructions above and you will successfully uninstall most programs.


Step 3: Clean any registries, created by Cinobi Trojan 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 Cinobi Trojan there. This can happen by following the steps underneath:

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


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


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.

IMPORTANT!
Before starting "Step 4", please boot back into Normal mode, in case you are currently in Safe Mode.
This will enable you to install and use SpyHunter 5 successfully.

Step 4: Scan for Cinobi Trojan with SpyHunter Anti-Malware Tool

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


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.


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

SpyHunter5-update-2018


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

SpyHunter5-Free-Scan-2018


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.

SpyHunter-5-Free-Scan-Next-2018

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


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Get rid of Cinobi Trojan from Mac OS X.


Step 1: Uninstall Cinobi Trojan and remove related files and objects

OFFER
Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your Mac with SpyHunter for Mac
Keep in mind, that SpyHunter for Mac needs to purchased to remove the malware threats. Click on the corresponding links to check SpyHunter’s EULA and Privacy Policy


1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:


2. Find Activity Monitor and double-click it:


3. In the Activity Monitor look for any suspicious processes, belonging or related to Cinobi Trojan:

Tip: To quit a process completely, choose the “Force Quit” option.


4. Click on the "Go" button again, but this time select Applications. Another way is with the ⇧+⌘+A buttons.


5. In the Applications menu, look for any suspicious app or an app with a name, similar or identical to Cinobi Trojan. If you find it, right-click on the app and select “Move to Trash”.


6: Select Accounts, after which click on the Login Items preference. Your Mac will then show you a list of items that start automatically when you log in. Look for any suspicious apps identical or similar to Cinobi Trojan. Check the app you want to stop from running automatically and then select on the Minus (“-“) icon to hide it.


7: Remove any left-over files that might be related to this threat manually by following the sub-steps below:

  • Go to Finder.
  • In the search bar type the name of the app that you want to remove.
  • Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
  • If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.

In case you cannot remove Cinobi Trojan via Step 1 above:

In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:

Disclaimer! If you are about to tamper with Library files on Mac, be sure to know the name of the virus file, because if you delete the wrong file, it may cause irreversible damage to your MacOS. Continue on your own responsibility!

1: Click on "Go" and Then "Go to Folder" as shown underneath:

2: Type in "/Library/LauchAgents/" and click Ok:

3: Delete all of the virus files that have similar or the same name as Cinobi Trojan. If you believe there is no such file, do not delete anything.

You can repeat the same procedure with the following other Library directories:

→ ~/Library/LaunchAgents
/Library/LaunchDaemons

Tip: ~ is there on purpose, because it leads to more LaunchAgents.


Step 2: Scan for and remove Cinobi Trojan files from your Mac

When you are facing problems on your Mac as a result of unwanted scripts and programs such as Cinobi Trojan, the recommended way of eliminating the threat is by using an anti-malware program. SpyHunter for Mac offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.


Click the button below below to download SpyHunter for Mac and scan for Cinobi Trojan:


Download

SpyHunter for Mac



Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Remove Cinobi Trojan from Google Chrome.


Step 1: Start Google Chrome and open the drop menu


Step 2: Move the cursor over "Tools" and then from the extended menu choose "Extensions"


Step 3: From the opened "Extensions" menu locate the unwanted extension and click on its "Remove" button.


Step 4: After the extension is removed, restart Google Chrome by closing it from the red "X" button at the top right corner and start it again.


Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Erase Cinobi Trojan from Mozilla Firefox.

Step 1: Start Mozilla Firefox. Open the menu window


Step 2: Select the "Add-ons" icon from the menu.


Step 3: Select the unwanted extension and click "Remove"


Step 4: After the extension is removed, restart Mozilla Firefox by closing it from the red "X" button at the top right corner and start it again.



Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Uninstall Cinobi Trojan from Microsoft Edge.


Step 1: Start Edge browser.


Step 2: Open the drop menu by clicking on the icon at the top right corner.


Step 3: From the drop menu select "Extensions".


Step 4: Choose the suspected malicious extension you want to remove and then click on the gear icon.


Step 5: Remove the malicious extension by scrolling down and then clicking on Uninstall.



Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Remove Cinobi Trojan from Safari.


Step 1: Start the Safari app.


Step 2: After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.


Step 3: From the menu, click on "Preferences".

stf-safari preferences


Step 4: After that, select the 'Extensions' Tab.

stf-safari-extensions


Step 5: Click once on the extension you want to remove.


Step 6: Click 'Uninstall'.

stf-safari uninstall

A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the Cinobi Trojan will be removed.


How to Reset Safari
IMPORTANT: Before resetting Safari make sure you back up all your saved passwords within the browser in case you forget them.

Start Safari and then click on the gear leaver icon.

Click the Reset Safari button and you will reset the browser.


Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Eliminate Cinobi Trojan from Internet Explorer.


Step 1: Start Internet Explorer.


Step 2: Click on the gear icon labeled 'Tools' to open the drop menu and select 'Manage Add-ons'


Step 3: In the 'Manage Add-ons' window.


Step 4: Select the extension you want to remove and then click 'Disable'. A pop-up window will appear to inform you that you are about to disable the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and click 'Disable'.


Step 5: After the unwanted extension has been removed, restart Internet Explorer by closing it from the red 'X' button located at the top right corner and start it again.


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