What is Coos Ransomware
Coos Ransomware (sometimes called STOP Ransomware or DjVu Ransomware) is wide-spread encryption virus, that first appeared in December, 2017. Since then, lots of technical and design changes took place, and a few generations of malware changed. Ransomware uses the AES-256 (CFB-mode) encryption algorithm to encode user’s files and after this last version appends .coos extensions. After encryption virus creates a text file _readme.txt, which is called “ransom note”, where hackers disclose ransom amount, contact information, and instructions to pay it. STOP Ransomware with .coos file extensions use following e-mails: email@example.com and firstname.lastname@example.org. Here is the ransom note:
Don't worry, you can return all your files!
All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key.
The only method of recovering files is to purchase decrypt tool and unique key for you.
This software will decrypt all your encrypted files.
What guarantees you have?
You can send one of your encrypted file from your PC and we decrypt it for free.
But we can decrypt only 1 file for free. File must not contain valuable information.
You can get and look video overview decrypt tool:
Price of private key and decrypt software is $980.
Discount 50% available if you contact us first 72 hours, that's price for you is $490.
Please note that you'll never restore your data without payment.
Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours.
To get this software you need write on our e-mail:
Reserve e-mail address to contact us:
Your personal ID:
Authors of STOP Ransomware demand $980 for decryption of your files (also 50% discount offered if the ransom is paid within 72 hours) and give users 6 hours to answer. Statistics show, that hackers may not reply after getting the payment. So you won’t receive their decryption tool. We do not recommend transferring any funds to such people. However, files encrypted by Coos Ransomware can be decrypted with help of STOP Djvu Decryptor from EmsiSoft, free decryption utility, that is able to decode .coos files for free. Before that, you need to kill the active process and remove the executable of STOP Ransomware, get anti-malware or anti-ransomware protection. The best solutions on the market are: Emsisoft Anti-Malware and Malwarebytes Anti-Malware. On this page, you will find detailed instructions to remove Coos Ransomware and decrypt .coos files in Windows 10, Windows 8, and Windows 7.
- Download Coos Ransomware Removal Tool
- Get decryption tool for .coos files
- Recover encrypted files with Stellar Data Recovery Professional
- Restore encrypted files with Windows Previous Versions
- Restore files with Shadow Explorer
- How to protect from threats like Coos Ransomware
How Coos Ransomware infected your PC
Virus modifies “hosts” file to block Windows updates, downloading antivirus programs, and visiting sites related to security news or offering security solutions. Coos Ransomware comes along with AZORult trojan, which was initially created to steal logins and passwords. The process of infection also looks like installing Windows updates, the malware shows a fake window, that mimics the update process.
It uses rdpclip.exe to replace a legal Windows file and to launch an attack on a computer network. After encrypting the files, the encrypter is deleted using the delself.bat command file. Coos Ransomware virus is propagated via spam attack with malicious e-mail attachments and using manual PC hacking. Can be distributed by hacking through an unprotected RDP configuration, fraudulent downloads, exploits, web injections, fake updates, repackaged, and infected installers. Virus assigns a certain ID with the victims, which is used to name those files and supposedly to send decryption key. Great tools to protect against Coos Ransomware are: Emsisoft Anti-Malware and Malwarebytes Anti-Malware.
Download Coos Ransomware Removal Tool
To remove Coos Ransomware completely, we recommend you to use WiperSoft AntiSpyware from WiperSoft. It detects and removes all files, folders, and registry keys of Coos Ransomware and prevents future infections by similar viruses.
Alternative Removal Tool
To remove Coos Ransomware completely, we recommend you to use SpyHunter 5 from EnigmaSoft Limited. It detects and removes all files, folders, and registry keys of Coos Ransomware. The trial version of SpyHunter 5 offers virus scan and 1-time removal for FREE.
How to remove Coos Ransomware manually
It is not recommended to remove Coos Ransomware manually, for safer solution use Removal Tools instead.
Coos Ransomware files:
Coos Ransomware registry keys:
How to decrypt and restore .coos files
Download STOP Djvu Decryptor from EmsiSoft (.coos variations)
STOP Djvu Decryptor is able to decrypt .coos files, encrypted by Coos Ransomware. This tool was developed by EmsiSoft. It works in automatic mode, but in most cases works only for files encrypted with offline keys. Download it here:
Dr.Web Rescue Pack
Famous antivirus vendor Dr. Web provides free decryption service for the owners of its products: Dr.Web Security Space or Dr.Web Enterprise Security Suite. Other users can ask for help in the decryption of .coos files by uploading samples to Dr. Web Ransomware Decryption Service. Analysis of files will be performed free of charge and if files are decryptable, all you need to do is purchase a 2-year license of Dr.Web Security Space worth $120 or less. Otherwise, you don’t have to pay.
If you are infected with Coos Ransomware and removed it from your computer, you can try decrypting your files. Antivirus vendors and individuals create free decryptors for some crypto-lockers. To attempt to decrypt them manually you can do the following:
Use Stellar Data Recovery Professional to restore .coos files
- Download Stellar Data Recovery Professional.
- Click Recover Data button.
- Select type of files you want to restore and click Next button.
- Choose location where you would like to restore files from and click Scan button.
- Preview found files, choose ones you will restore and click Recover.
Using Windows Previous Versions option:
- Right-click on infected file and choose Properties.
- Select Previous Versions tab.
- Choose particular version of the file and click Copy.
- To restore the selected file and replace the existing one, click on the Restore button.
- In case there is no items in the list choose alternative method.
Using Shadow Explorer:
- Download Shadow Explorer program.
- Run it and you will see screen listing of all the drives and the dates that shadow copy was created.
- Select the drive and date that you want to restore from.
- Right-click on a folder name and select Export.
- In case there are no other dates in the list, choose alternative method.
If you are using Dropbox:
- Login to the DropBox website and go to the folder that contains encrypted files.
- Right-click on the encrypted file and select Previous Versions.
- Select the version of the file you wish to restore and click on the Restore button.
How to protect computer from viruses, like Coos Ransomware, in future
1. Get special anti-ransomware software
Use BitDefender Anti-Ransomware
Famous antivirus vendor BitDefender released a free tool, that will help you with active anti-ransomware protection, as an additional shield to your current protection. It will not conflict with bigger security applications. If you are searching complete internet security solution consider upgrading to full version of BitDefender Internet Security 2018.
2. Back up your files
As an additional way to save your files, we recommend online backup. Local storages, such as hard drives, SSDs, flash drives, or remote network storages can be instantly infected by the virus once plugged in or connected to. Coos Ransomware uses some techniques to exploit this. One of the best services and programs for easy automatic online backup is iDrive. It has the most profitable terms and a simple interface. You can read more about iDrive cloud backup and storage here.
3. Do not open spam e-mails and protect your mailbox
Malicious attachments to spam or phishing e-mails are the most popular method of ransomware distribution. Using spam filters and creating anti-spam rules is good practice. One of the world leaders in anti-spam protection is MailWasher Pro. It works with various desktop applications and provides a very high level of anti-spam protection.