What is Ouroboros Ransomware

Ouroboros Ransomware (a.k.a. Zeropadypt Ransomware) is an extremely dangerous virus, that forcibly encrypts and blocks off the access to personal data. By doing so, Ransomware developers prompt users to pay a ransom (around 1000$) for getting a unique decryption key. When infiltrating the device, it immediately starts rushing through files like images, videos, music, text documents and other valuable data that can be stored on your computer and encrypts it by using the AES-256 encryption algorithm. After that, ransomware assigns a unique .odveta extension to each file, therefore, making it impossible to open. For example, if sample.mp4 gets encrypted it will change the file name to sample.mp4.odveta. There are many other versions and variation of Ouroboros Ransomware, that change file extensions to .bitdefender, .harma, .rx99, .Lazarus, .Lazarus+, .James, .lol, .hiddenhelp, .angus, .limbo, or .KRONOS. Some of the recent extensions like .bitdefender, were created as mockery, because BitDefender released decryption tool, that, unfortunately, cannot decode latest Ouroboros Ransomware species. Once encryption is finished, the application will automatically show a window containing a ransom-demand message and create a text ransom note file commonly named Unlock-Files.txt. Below is the contents of such files:


Your Files Has Been Encrypted
How To Recover:
Your Data Has Been Encrypted Due The Security Problem
If You Want To Restore Your Files Send Email to Us
Before Paying You Can Send 1MB file For Decryption Test to guarantee that your Files Can Be Restored
Test File Should Not Contain Valuable Data ( Databases Large Excels , Backups )
Do Not Rename Files or Do Not Try Decrypt Files With 3rd Party Softwares , It May Damage Your Files
And Increase Decryption Price
Your ID: You Can See Yo.
Our Email : You Can See Our Email in Read-Me-Now.txt
How To Buy Bitcoin :
Payment Should Be With Bitcoin
You Can learn how To Buy Bitcoin From This Links :
hxxps://localbitcoins.com/buy_bitcoins
hxxps://www.coindesk.com/information/how-can-i-buy-bitcoins


Your Files Has Been Encrypted
How To Recover :
Your Data Has Been Encrypted Due The Security Problem
If You Want To Restore Your Files Send Email to Us
Before Paying You Can Send 1MB file For Decryption Test to guarantee that your Files Can Be Restored
Test File Should Not Contain Valuable Data ( Databases Large Excels , Backups )
Do Not Rename Files or Do Not Try Decrypt Files With 3rd Party Softwares , It May Damage Your Files
And Increase Decryption Price
Your ID : 1E857D00
Our Email : encryptor2020@protonmail.com Or encryptor1996@protonmail.com
How To Buy Bitcoin :
Payment Should Be With Bitcoin
You Can learn how To Buy Bitcoin From This Links :
hxxps://localbitcoins.com/buy_bitcoins
hxxps://www.coindesk.com/information/how-can-i-buy-bitcoins

This message is supposed to notify users that their files were successfully encrypted and can be unblocked only by paying a ransom via Bitcoin. After paying a ransom users should send a message to their e-mail and they will provide a file-decrypting key within 48 hours. However, do not rush into making a payment because nobody can guarantee that they will give your files back. Sometimes the value of files does not equal to the required amount of money. Unfortunately, restoring files is quite a cumbersome task because files are strongly encrypted with a unique cipher that, most of the time, cannot be revealed. But you can certainly uninstall ransomware from your device and ensure further safety of personal data.

  1. Download Ouroboros Ransomware Removal Tool
  2. Get decryption tool for .odveta, .harma, .lazarus or .bitdefender files
  3. Recover encrypted files with Stellar Data Recovery Professional
  4. Restore encrypted files with Windows Previous Versions
  5. Restore files with Shadow Explorer
  6. How to protect from threats like Ouroboros Ransomware

ouroboros ransomware

How Ouroboros Ransomware infected your computer

There is a plethora of infecting ways that cybercriminals typically use. The most popular are trojans, fake software updaters, P2P (peer-to-peer) networks (eMule, torrents, etc.), fake download sources (free file hosting websites), and spam emails using malvertising attachments. Trojans are used to open “backdoors” for other viruses to infiltrate your system. Fake update tools infect the system by exploiting obsolete software flaws or simply downloading and installing malware rather than updates. P2P networks and other shady download sources present malware as legitimate software and trick users into downloading it. E-mail spam usually incorporates Infectious attachments that come in the format of JavaScript files or PDF documents. When users click on these unknown files, they instantly spread the ransomware across your computer. This is why attentiveness and self-awareness should be priorities number one when surfing the web. See the guide on how to remove ransomware from your computer below.

Download Removal Tool

Download Removal Tool

To remove Ouroboros Ransomware completely, we recommend you to use WiperSoft AntiSpyware from WiperSoft. It detects and removes all files, folders and registry keys of Ouroboros Ransomware and prevents future infections by similar viruses.

Alternative Removal Tool

Download SpyHunter 5

To remove Ouroboros Ransomware completely, we recommend you to use SpyHunter 5 from EnigmaSoft Limited. It detects and removes all files, folders and registry keys of Ouroboros Ransomware. The trial version of SpyHunter 5 offers virus scan and 1-time removal for FREE.

Ouroboros Ransomware files:


{randomfilename}.exe
Unlock-Files.txt
HowToDecrypt.txt
DECRYPTION_GUIDANCE.txt
How_to_Unlock-Files.txt

Ouroboros Ransomware registry keys:

no information

How to decrypt and restore .odveta, .harma, .lazarus or .bitdefender files

Use automated decryptors

Option 1: Download BitDefender Decryption Utility for Ouroboros

BitDefender Decryption Utility for Ouroboros

Use following tool from BitDefender called BitDefender Decryption Utility for Ouroboros, that can decrypt .lazarus or .lazarus+ files. Download it here:

Download Decryption Utility for Ouroboros

Option 2: Download Ouroboros Decoder from BloodDolly

Ouroboros Decoder

Individual security researcher with nickname BloodDolly offered his help on BleepingComputer’s forum. He developed Ouroboros Decoder, that can also decrypt .lazarus, .lazarus+, .kronos files. Read the forum devoted to Ouroboros Ransomware on BleepingComputer for more information:

Visit BleepingComputer forum

There is no purpose to pay the ransom, because there is no guarantee you will receive the key, but you will put your bank credentials at risk.

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 .odveta, .harma, .lazarus or .bitdefender files by uploading samples to Dr. Web Ransomware Decryption Service. Analyzing 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 Ouroboros Ransomware and removed it from your computer you can try to decrypt 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 .odveta, .harma, .lazarus or .bitdefender files

stellar data recovery professional

  1. Download Stellar Data Recovery Professional.
  2. Click Recover Data button.
  3. Select type of files you want to restore and click Next button.
  4. Choose location where you would like to restore files from and click Scan button.
  5. Preview found files, choose ones you will restore and click Recover.
Download Stellar Data Recovery Professional

Using Windows Previous Versions option:

  1. Right-click on infected file and choose Properties.
  2. Select Previous Versions tab.
  3. Choose particular version of the file and click Copy.
  4. To restore the selected file and replace the existing one, click on the Restore button.
  5. In case there is no items in the list choose alternative method.

Using Shadow Explorer:

  1. Download Shadow Explorer program.
  2. Run it and you will see screen listing of all the drives and the dates that shadow copy was created.
  3. Select the drive and date that you want to restore from.
  4. Right-click on a folder name and select Export.
  5. In case there are no other dates in the list, choose alternative method.

If you are using Dropbox:

  1. Login to the DropBox website and go to the folder that contains encrypted files.
  2. Right-click on the encrypted file and select Previous Versions.
  3. Select the version of the file you wish to restore and click on the Restore button.

How to protect computer from viruses, like Ouroboros Ransomware, in future

1. Get special anti-ransomware software

Use BitDefender Anti-Ransomware

bitdefender anti-ransomware

Famous antivirus vendor BitDefender released free tool, that will help you with active anti-ransomware protection, as 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.

Download BitDefender Anti-Ransomware

2. Back up your files

idrive backup

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. Ouroboros 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 simple interface. You can read more about iDrive cloud backup and storage here.

3. Do not open spam e-mails and protect your mailbox

mailwasher pro

Malicious attachments to spam or phishing e-mails is 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 very high level of anti-spam protection.

Download MailWasher Pro 5/5 (2)

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