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Frogo is a newly discovered ransomware that targets essential data stored on the infected hosts and blackmails victims into paying a ransom. The access to all encrypted files is restricted so they may seem broken. In addition they may be marked with the extension .frogo at the end of their names. Before the ransomware brings the attack to its end it drops a ransom note that primary aims to inform victims how they can pay the demanded ransom.
This article aims to show infected users how they can fully remove Frogo ransomware from the infected computer and restore encrypted files.
Threat Summary
| Name | Frogo |
| Type | Ransomware, Cryptovirus |
| Short Description | The ransomware encrypts files on your computer and demands a ransom. |
| Symptoms | The ransomware will encrypt your files making them inaccessible. It will then drop a ransom note and open it automatically. |
| Distribution Method | Spam Emails, Email Attachments |
| Detection Tool | See If Your System Has Been Affected by Frogo Download Malware Removal Tool | User Experience | Join Our Forum to Discuss Frogo. |
| Data Recovery Tool | Windows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive. |
Frogo Ransomware – Spread Techniques
Frogo ransomware payloads may be attached to email messages with spoofed senders and addresses. Usually, the messages try to trick users into downloading the malicious samples on their computer systems and infect them with Frogo ransomware. The sender’s name and email address can pose as well-known business organizations, legal services, and even governmental institutions.
In some cases, the ransomware payload may appear as well crafted fake notification for software update that urges to download a critical security patch. Additionally, the code of the malicious Frogo crypto virus may be injected into web pages that are set to download it automatically. The links to these compromised web pages may be included in malvertising campaigns or spread on social media channels.
Frogo Ransomware – Technical Insight
The ransomware attack starts at the moment its payload is running on the PC. The payload may be designed to connect it command and control center to download additional malicious components that will help it to fulfill the attack. Its malicious files may be located in essential Windows system folders like:
- %AppData%
- %Temp%
- %Roaming%
- %Common%
- %System32%
Once all that it needs is on the PC it can access Windows Registry Editor to modify values under the Run and RunOnce keys. These keys can enable the automatic start of Frogo ransomware payload each time the operating system is loaded. Furthermore, other values under the same keys may be modified so that the ransom note can appear automatically on the PC screen in the end of the infection.
Security experts are currently investigating Frogo rasomware samples so information about the crooks’ message and demanded ransom amount are to be revealed soon. In case that you are a victim of threat be advised to avoid any negotiations with the criminals. There is no need to pay the ransom as Frogo ransomware appears to be a new strain of Amnesia crypto virus that has been successfully cracked by the researchers at Emsisoft.
Frogo Ransomware – Encryption Process
The threat employs strong cipher algorithm to encrypt files and make them no longer openable. All corrupted files can be marked with a malicious extension. Frogo ransomware is likely to target common file formats that store valuable information like media files (audio, video, images) databases, archives, documents, projects, etc. Luckyly, there is a method to decrypt files encrypted by this virus, thanks to Emsisoft researchers. But first, you need to remove all files and objects associated with Frogo ransomware from your computer.
Remove Frogo Ransomware and Decrypt Files
One method to remove Frogo ransomware virus is to follow the detailed manual instructions below. Bear in mind that experts strongly advise using and advanced anti-malware software to remove everything associated with the ransomware.
Gergana Ivanova
Gergana has completed a bachelor degree in Marketing from the University of National and World Economy. She has been with the STF team for three years, researching malware and reporting on the latest infections.
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Gergana Ivanova
Gergana has completed a bachelor degree in Marketing from the University of National and World Economy. She has been with the STF team for three years, researching malware and reporting on the latest infections.
Follow Me:
Gergana Ivanova
Gergana has completed a bachelor degree in Marketing from the University of National and World Economy. She has been with the STF team for three years, researching malware and reporting on the latest infections.
Follow Me:
Preparation before removing Frogo.
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.
Step 1: Boot Your PC In Safe Mode to isolate and remove Frogo
Step 2: Clean any registries, created by Frogo 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 Frogo there. This can happen by following the steps underneath:
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 files created by Frogo
For Windows 8, 8.1 and 10.
For Windows XP, Vista, and 7.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 navination box to fill up in case the PC is looking for the file and hasn’t found it yet.
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.
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 Frogo with SpyHunter Anti-Malware Tool
Step 5 (Optional): Try to Restore Files Encrypted by Frogo.
Ransomware infections and Frogo aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested several alternative methods that may help you go around direct decryption and try to restore your files. Bear in mind that these methods may not be 100% effective but may also help you a little or a lot in different situations.
Method 1: Scanning your drive’s sectors by using Data Recovery software.
Another method for restoring your files is by trying to bring back your files via data recovery software. Here are some suggestions for preferred data recovery software solutions:
- Stellar Data Recovery Technicians License(Pro version with more features)
- Stellar Windows Data Recovery
- Stellar Photo Recovery
Method 2: Trying Kaspersky and EmsiSoft’s decryptors.
If the first method does not work, we suggest trying to use decryptors for other ransomware viruses, in case your virus is a variant of them. The two primary developers of decryptors are Kaspersky and EmsiSoft, links to which we have provided below:
Method 3: Using Shadow Explorer
To restore your data in case you have backup set up, it is important to check for Volume Shadow Copies, if ransomware has not deleted them, in Windows using the below software:
Method 4: Finding the decryption key while the cryptovirus sends it over a network via a sniffing tool.
Another way to decrypt the files is by using a Network Sniffer to get the encryption key, while files are encrypted on your system. A Network Sniffer is a program and/or device monitoring data traveling over a network, such as its internet traffic and internet packets. If you have a sniffer set before the attack happened you might get information about the decryption key. See how-to instructions below:
Instructions on How to Find Decryption Key for Files Encrypted By Ransowmare
Gergana Ivanova
Gergana has completed a bachelor degree in Marketing from the University of National and World Economy. She has been with the STF team for three years, researching malware and reporting on the latest infections.
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Preparation before removing Frogo.
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.
Step 1: Boot Your PC In Safe Mode to isolate and remove Frogo
Step 2: Clean any registries, created by Frogo 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 Frogo there. This can happen by following the steps underneath:
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 files created by Frogo
For Windows 8, 8.1 and 10. For Windows XP, Vista, and 7.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 navination box to fill up in case the PC is looking for the file and hasn’t found it yet.
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.
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 Frogo with SpyHunter Anti-Malware Tool
Gergana Ivanova
Gergana has completed a bachelor degree in Marketing from the University of National and World Economy. She has been with the STF team for three years, researching malware and reporting on the latest infections.
Follow Me:
Preparation before removing Frogo.
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.
- Be patient as this could take a while.
Step 1: Uninstall Frogo 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:
Follow the instructions above and you will successfully uninstall most programs.Step 2: Clean your Browsers from Frogo.
Remove an extension from Mozilla Firefox
Remove an extension from Google Chrome
Remove an extension from Internet Explorer
Remove an extension from Microsoft Edge
2. Select the “Add-ons” icon from the menu.
3. Select the unwanted extension and click “Remove“
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.
2. Move the cursor over “Tools” and then from the extended menu choose “Extensions“
3. From the opened “Extensions” menu locate the unwanted extension and click on its “Remove” button.
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.
2. Click on the gear icon labeled ‘Tools’ to open the drop menu and select ‘Manage Add-ons’
3. In the ‘Manage Add-ons’ window.
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’.
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.
2. Open the drop menu by clicking on the icon at the top right corner.
3. From the drop menu select “Extensions”.
4. Choose the suspected malicious extension you want to remove and then click on the gear icon.
5. Remove the malicious extension by scrolling down and then clicking on Uninstall.
Step 3: Clean any registries, created by Frogo 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 Frogo there. This can happen by following the steps underneath:
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.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 Frogo with SpyHunter Anti-Malware Tool
Gergana Ivanova
Gergana has completed a bachelor degree in Marketing from the University of National and World Economy. She has been with the STF team for three years, researching malware and reporting on the latest infections.
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Preparation Phase:
Before starting to follow the steps below, be advised that you should first do the following preparations:
- Backup your files in case the worst happens.
- Make sure to have a device with these instructions on standy.
- Arm yourself with patience.
Step 1: Uninstall Frogo and remove related files and objects
1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:
- 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”.
Step 2: Remove Frogo – related extensions from your Mac’s browsers
Remove a toolbar from Mozilla FirefoxRemove a toolbar from Google Chrome
Remove an extension from Safari and reset it.
Step 3: Scan for and remove Frogo files from your Mac
When you are facing problems on your Mac as a result of unwanted scripts and programs such as Frogo, the recommended way of eliminating the threat is by using an anti-malware program. Combo Cleaner offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.
Gergana Ivanova
Gergana has completed a bachelor degree in Marketing from the University of National and World Economy. She has been with the STF team for three years, researching malware and reporting on the latest infections.
Follow Me:
