Security researchers detected a new ransomware which belongs to the Hidden Tear family. The threat has been dubbed Mimicry ransomware, and it is appending the .good file extension to encrypted files. Researchers called the ransomware Mimicry because it uses fake signatures that belong to other ransomware families such as Scarab-Horsia and Crypt0L0cker. The ransomware note also resembles the note of Scarab, but by the looks of it, Mimicry is only mimicking other ransomware pieces without actually using their functionalities.
When the Mimicry ransomware virus infects the system, it drops two executable files – frost.exe and Shiva. Thus, the threat is also called ShivaGood ransowmare, as a combination of the Shiva executable it drops and the .good extension it adds to encrypted files. It should be noted that those names were created by security researchers and not by the ransomware operators.
Threat Summary
| Name | Mimicry ransomware |
| Type | Ransomware |
| Short Description | Mimicry ransomware virus encrypts files on your PC and drops a ransom note that demands payment for the decryption of .good files. |
| Symptoms | This ransomware encrypts important files and then renames them with the extension .good. The access to encrypted files is restricted. A ransom payment is demanded. |
| Distribution Method | Spam Emails, Email Attachments, Executable files |
| Detection Tool |
See If Your System Has Been Affected by malware
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Malware Removal Tool
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User Experience | Join Our Forum to Discuss Mimicry ransomware. |
| 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. |
Mimicry Ransomware: Distribution Methods
As in most ransomware cases, Mimicry ransomware could be distributed in several ways. The main distribution technique is typically via email spam where the ransomware is contained as an attached file.
In order to seem legit and increase the chance of the user opening the attached files, such emails usually impersonate representatives of well-known companies or in other cases governmental institutions. Keep in mind that the attached malicious files usually come as documents, archives, images and other commonly used file formats. If the text body of the email is trying too hard to persuade the user to open the attachment, it is a clear indication that the email is not coming from a legitimate sender but from malicious spammers.
For the sake of your security, you could use a free online file extractor each time you download new file on your PC. Such tools could quickly identify whether a file contains malicious elements by scanning its code for specific signs.
The Mimicry ransomware can also infiltrate computer systems with the help of infected web pages. Threat actors could inject the malicious code into the source code of target web pages or may even set them to download it directly on targeted systems. They could also create copies of some pages and modify their components so they can download automatically the ransomware after a user visits the corrupted page. URLs of such web pages could be posted on social media channels, send in email spam or spread via instant messaging services. Potentially unwanted programs that alter browser settings and cause numerous redirects to sites of unknown origin are also employed by ransomware operators in their distribution campaigns.
Mimicry Ransomware Infection Details
The infection begins with Mimicry’s payload running on the infected system. The ransomware is typically aiming to modify crucial system settings for the purpose of achieving persistence. In most cases ransomware pieces such as Mimicry add malicious values under the registry sub-keys Run and RunOnce which will ensure its automatic execution on each Windows system start.
Mimicry ransomware could also scan the system for particular details so it can then send them to its command and control server. Once Mimicry establishes a connection with its server, it may drop additional malicious files on the compromised host.
At the end of the infection process, the crypto virus will typically drop a ransom note file to blackmail victims into paying a ransom for a decryption solution that can decrypt the .good encrypted files. The message could be found in a file named HOW_TO_RECOVER_FILES.txt.
The ransom note of the Mimicry ransomware reads the following:
Your personal identifier: U3XXX
Your are now! Just by important files is encrypted security of due to a problem with your the PC!
Now you should send us email with your personal identifier.
This email will be as confirmation you are ready to pay for decryption key.
You have to pay for decryption in Bitcoins . The price depends on how fast you write to us.
After payment we will send you the decryption tool that will decrypt all your files.
The this us using the contact email address: dsupport@airmail.cc
the Free decryption as with the guarantee!
Before paying you can send us up to 3 files for free decryption.
Total size of The files must be less than 10Mb (non archived), and files should not contain valuable information (databases, backups, large excel sheets, etc.).
How to obtain Bitcoins?
* The easiest way to buy bitcoins is LocalBitcoins site. You have to register You, click’Buy bitcoins’, and the select the seller by payment method and price:
https://localbitcoins.com/buy_bitcoins
* Also you CAN OTHER places the find to the buy Bitcoins and the beginners guide found here:
http: // www .coindesk.com / information / how-i-CAN-the buy-bitcoins
the Attention!
* Do not rename encrypted files.
* Do not try to decrypt your data using third party software, it may cause permanent data loss.
Decryption of your * files is with the help of a cause THIRD, Parties may Increased price
(the add for They Their fee to Our) or you CAN Become a victim of a scam a.
Here is how the ransom note of Mimicry Ransomware looks like:
Remove Mimicry Ransomware and Restore .good Files
The step-by-step removal guide below provides both manual and automatic approaches for the removal of Mimicry ransomware. Keep in mind that the removal of Mimicry crypto virus is not an easy task and it may be better to use an anti-malware tool.
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Step 1: Scan for Mimicry ransomware with SpyHunter Anti-Malware Tool
Ransomware Automatic Removal - Video Guide
Step 2: Uninstall Mimicry ransomware and related malware 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 delete most unwanted and malicious programs.
Step 3: Clean any registries, created by Mimicry ransomware 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 Mimicry ransomware 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: Boot Your PC In Safe Mode to isolate and remove Mimicry ransomware
Step 5: Try to Restore Files Encrypted by Mimicry ransomware.
Method 1: Use STOP Decrypter by Emsisoft.
Not all variants of this ransomware can be decrypted for free, but we have added the decryptor used by researchers that is often updated with the variants which become eventually decrypted. You can try and decrypt your files using the instructions below, but if they do not work, then unfortunately your variant of the ransomware virus is not decryptable.
Follow the instructions below to use the Emsisoft decrypter and decrypt your files for free. You can download the Emsisoft decryption tool linked here and then follow the steps provided below:
1 Right-click on the decrypter and click on Run as Administrator as shown below:
2. Agree with the license terms:
3. Click on "Add Folder" and then add the folders where you want files decrypted as shown underneath:
4. Click on "Decrypt" and wait for your files to be decoded.
Note: Credit for the decryptor goes to Emsisoft researchers who have made the breakthrough with this virus.
Method 2: Use data recovery software
Ransomware infections and Mimicry ransomware aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.
Simply click on the link and on the website menus on the top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.
Mimicry ransomware-FAQ
What is Mimicry ransomware Ransomware?
Mimicry ransomware is a ransomware infection - the malicious software that enters your computer silently and blocks either access to the computer itself or encrypt your files.
Many ransomware viruses use sophisticated encryption algorithms to make your files inaccessible. The goal of ransomware infections is to demand that you pay a ransom payment to get access to your files back.
What Does Mimicry ransomware Ransomware Do?
Ransomware in general is a malicious software that is designed to block access to your computer or files until a ransom is paid.
Ransomware viruses can also damage your system, corrupt data and delete files, resulting in the permanent loss of important files.
How Does Mimicry ransomware Infect?
Via several ways.Mimicry ransomware Ransomware infects computers by being sent via phishing emails, containing virus attachment. This attachment is usually masked as an important document, like an invoice, bank document or even a plane ticket and it looks very convincing to users.
Another way you may become a victim of Mimicry ransomware is if you download a fake installer, crack or patch from a low reputation website or if you click on a virus link. Many users report getting a ransomware infection by downloading torrents.
How to Open .Mimicry ransomware files?
You can't without a decryptor. At this point, the .Mimicry ransomware files are encrypted. You can only open them once they are decrypted using a specific decryption key for the particular algorithm.
What to Do If a Decryptor Does Not Work?
Do not panic, and backup the files. If a decryptor did not decrypt your .Mimicry ransomware files successfully, then do not despair, because this virus is still new.
Can I Restore ".Mimicry ransomware" Files?
Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .Mimicry ransomware files.
These methods are in no way 100% guaranteed that you will be able to get your files back. But if you have a backup, your chances of success are much greater.
How To Get Rid of Mimicry ransomware Virus?
The safest way and the most efficient one for the removal of this ransomware infection is the use a professional anti-malware program.
It will scan for and locate Mimicry ransomware ransomware and then remove it without causing any additional harm to your important .Mimicry ransomware files.
Can I Report Ransomware to Authorities?
In case your computer got infected with a ransomware infection, you can report it to the local Police departments. It can help authorities worldwide track and determine the perpetrators behind the virus that has infected your computer.
Below, we have prepared a list with government websites, where you can file a report in case you are a victim of a cybercrime:
Cyber-security authorities, responsible for handling ransomware attack reports in different regions all over the world:
Germany - Offizielles Portal der deutschen Polizei
United States - IC3 Internet Crime Complaint Centre
United Kingdom - Action Fraud Police
France - Ministère de l'Intérieur
Italy - Polizia Di Stato
Spain - Policía Nacional
Netherlands - Politie
Poland - Policja
Portugal - Polícia Judiciária
Greece - Cyber Crime Unit (Hellenic Police)
India - Mumbai Police - CyberCrime Investigation Cell
Australia - Australian High Tech Crime Center
Reports may be responded to in different timeframes, depending on your local authorities.
Can You Stop Ransomware from Encrypting Your Files?
Yes, you can prevent ransomware. The best way to do this is to ensure your computer system is updated with the latest security patches, use a reputable anti-malware program and firewall, backup your important files frequently, and avoid clicking on malicious links or downloading unknown files.
Can Mimicry ransomware Ransomware Steal Your Data?
Yes, in most cases ransomware will steal your information. It is a form of malware that steals data from a user's computer, encrypts it, and then demands a ransom in order to decrypt it.
In many cases, the malware authors or attackers will threaten to delete the data or publish it online unless the ransom is paid.
Can Ransomware Infect WiFi?
Yes, ransomware can infect WiFi networks, as malicious actors can use it to gain control of the network, steal confidential data, and lock out users. If a ransomware attack is successful, it could lead to a loss of service and/or data, and in some cases, financial losses.
Should I Pay Ransomware?
No, you should not pay ransomware extortionists. Paying them only encourages criminals and does not guarantee that the files or data will be restored. The better approach is to have a secure backup of important data and be vigilant about security in the first place.
What Happens If I Don't Pay Ransom?
If you don't pay the ransom, the hackers may still have access to your computer, data, or files and may continue to threaten to expose or delete them, or even use them to commit cybercrimes. In some cases, they may even continue to demand additional ransom payments.
Can a Ransomware Attack Be Detected?
Yes, ransomware can be detected. Anti-malware software and other advanced security tools can detect ransomware and alert the user when it is present on a machine.
It is important to stay up-to-date on the latest security measures and to keep security software updated to ensure ransomware can be detected and prevented.
Do Ransomware Criminals Get Caught?
Yes, ransomware criminals do get caught. Law enforcement agencies, such as the FBI, Interpol and others have been successful in tracking down and prosecuting ransomware criminals in the US and other countries. As ransomware threats continue to increase, so does the enforcement activity.
About the Mimicry ransomware Research
The content we publish on SensorsTechForum.com, this Mimicry ransomware how-to removal guide included, is the outcome of extensive research, hard work and our team’s devotion to help you remove the specific malware and restore your encrypted files.
How did we conduct the research on this ransomware?
Our research is based on an independent investigation. We are in contact with independent security researchers, and as such, we receive daily updates on the latest malware and ransomware definitions.
Furthermore, the research behind the Mimicry ransomware ransomware threat is backed with VirusTotal and the NoMoreRansom project.
To better understand the ransomware threat, please refer to the following articles which provide knowledgeable details.
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