How to Delete Octopus ransomware with Easy Steps
Octopus ransomware is a variant of “Phobos virus” that spread though poorly protected RDP connections. Like its other version, it can encrypt all the files stored in the PC hard-disk with a powerful AES encryption cipher and then asks you to pay certain money as ransom in exchange of the decryption key. It targets to encrypt files related to music, videos, documents, images, databases, MS Office docs and so on. On every file, it adds .octopus extension and they are no longer accessible for you.
When you try to access .octopus extension file, you will notice of the two ransom note that Octopus ransomware delivers. The first ransom note is info.txt that contains standard message and other is info.hta that is a pop-up window containing little more details. The cyber-criminals provides two email IDs namely [email protected] or [email protected] contact them. They demand to pay 0.31 Bitcoincrypto-currenciesfor the decryption tool. The ransom amount may vary based on your negotiation skills and how quickly you connect to them.
Type: Cryptovirus, ransomware
Family: Phobos Variant
Distribution or Mode of Attack: It aggressively spreads through Remote Desktop connections. Some other methods are spam email campaigns, cracked software, fake updates, security vulnerabilities and exploitation etc.
Encryption Type: AES encryption cipher are used to lock the targeted files and make them inaccessible
File extension: Every files gets a .octopus extension. For example, a file named as Octopus ransomware.jpg will look like Octopus ransomware.jpg.id[8E95D737-2497].[[email protected]].octopus
Ransom Note: It delivers two ransom note namely .info.txt and info.hta. These are text and html file respectively
Ransom Amount: 0.31 Bitcoin that varies
File Decryption: The easy and safest option is to restore the encrypted files from backup that was created on an external storage device prior to the infection. The other option is to use “Shadow Volume Copies” however this kind of ransomware deletes them as well. The last option is to use a powerful data recovery application.
Ransomware Removal: It is advised to use a powerful anti-malware tool that has strong scanning algorithm and programming logics
More Details on Octopus ransomware
As mentioned earlier, this ransomware belongs to Phobos family which is a well-established and it account more than 9% of total crypto-virus infection world-wide. It attacks the regular users as wells public entities and big corporations. In our research, we concluded that it aggressively gets distributed through RDP connections which are stolen cyber-criminals. There are several versions of Phobos and Octopus ransomware is the latest whose free decrypter has not been created by the cyber-experts until now.
After settling down, Octopus ransomware does some serious modifications and activities. It establishes a network connection with C&C server. Next it deletes the “Shadow Volume Copies” of the targeted files so that victim could not recover the infected data through temporary backup files created by the OS. It also alters various registries and system files hence many important applications and features starts to malfunction. It also executes shell commands.
The next step is to initiate the data encryption using AES cipher algorithm. As mentioned earlier, it can encrypt various types of files and data and adds .octopus extension to each one of them. The ransom note of Octopus ransomware looks like:
“!!!All of your files are encrypted!!!
To decrypt them send e-mail to this address: [email protected]
If we don’t answer in 24h., send e-mail to this address: [email protected]”
This is the text file ransom note. It also delivers another html pop-up ransom note that contains more elaboration. The victims are informed that they can easily recover their data using the decryption tool which they can buy by paying certain money. In order to win your trust that offered decryption tool really works, it decrypt up to five files for free. The only terms and condition is that it should not contain any important information such as backup, username, password etc.
However, there have been maximum cases when the cyber-experts didn’t provide the decryption key even after receiving the complete payment. Hence paying any money to crooks is wastage of time and money. Instead, your first focus should be to remove Octopus ransomware using a powerful anti-malware tool.
How to Recover the Encrypted files?
In order to restore the locked files, it is imporntant to first delete Octopus ransomware from the work-station. Once the PC gets free from malware, you can use the backup files that you created before ransomware attack. In case if backup files are note available, you can use a data recovery tool that has strong scanning algorithm.
Secure the RDC (Remote Desktop Connection)
One of the major distribution methods of Phobosransomware variants is “Remote Desktop Connection”. They can scan the internet for unsecured RDC and then can get access to the targeted PC from remote location. They use predetermined credentials which are acquired from underground forums and dark web.
Now, your computer is under the control of cyber-criminals and they can download or installs harmful payloads manually. As precautionary measures, you are advised to take certain steps as follow.
- Don’t connect to random desktop connections
- Use a strong password and makes change at regular interval
- Don’t use default TCP point -3389 as it is easily traceable by the criminals
- Use update software that should not contain any vulnerabilities
The cyber-criminals may also use other tricks such as spam email campaign, cracked software promotion, bogus updates etc. in order to inject malware payloads. Hence it is always advised to use a powerful anti-malware tool to get protection in real time.
How to turn your encrypted files working once again?
Well, through the above explanations mentioned, you might have learned actually what happened to your files after encryption. Since the malware that has affected your files is now removed with suggested scanner, you would still require to turn your files working. And we are now going to discuss how to accomplish this task. Based on expert’s researches and their findings, there’s a number of possible methods or ways which a user can get through to restore their encrypted files to work. Even many of victimized users have tried these methods with their own infected computer and success rate is almost 95 percent. So, you can hope to have your files back, and in order to accomplish complete restore of your infected data, we suggest you check out some suggested methods here:
Methods 1: Restore encrypted files using a powerful data recovery software
Before you start to read the steps, you should know this method is appropriate to those users who have found no solutions to decrypt their files affected by ransomware. But still they are able to utilize their system and can install a software. According to experts, this method has very low difficulty level as it utilizes a program to do so.
Although this method is called to be the safest way to recover encrypted files, it still have some limitations. Technically, the encrypted data recovery solution looks through your system and its partitions to recover original files which are actually deleted by virus to replace with the encrypted one. In many cases, the user tend to copy the encrypted files on some external drive and re-install Windows OS that actually declines the chances of data recovery through this method. So, after you have managed to clean your system against malware effects, leave the files as they are and get through the steps to restore your files using one of the top most data recovery app called Stellar Phoenix Data Recovery Software.
Step 1: At first, download the app on your system by clicking the download button below.
Step 2: Click on the downloaded file through your browser to execute its installer.
Step 3: In the license agreement page, click to accept the terms and click Next button. Further, follow on-screen instructions to complete the installation, and click on Finish button finally.
Step 4: After the installation is done, the program will run automatically. At the first interface, select the file types now that you intend to recovery followed by clicking Next.
Step 5: Select the drives over which you need the software to run over and perform the recovery of encrypted files. Done? Click on Scan button.
Step 6: The software will now scan all selected drive to complete the restore process, however it may take some time depending upon volume of drives and number of files or directories were there previously. After the scanning process ends, you will be shown with a file explorer with preview of your data which you want to recover. Just select those which you need to be restored.
Step 7: Browse a location where you want the restored data to be saved.
Method 2: Encrypted file recovery with a lately created Windows backup
This method is technically for those who have a lately created Windows backup saved somewhere and is not affected by the ransomware. Using inbuilt system recovery services, the backup can restore the files which are included under the backup. This method is considered easier as well and leaves no software, thus considered as a very popular method to fight against emergencies caused by infectious malware. Here are the steps to follow:
Step 1: Hit Win + R key combination and to execute Run command line.
Step 2: In the Run text field, type ‘ms-settings:windowsupdate’ and hit the OK button.
Step 3: You will be shown Windows update settings, but you have actually to click Backup option as shown in picture, and located in left pane.
Step 4: Click on ‘More Options’ to open Backup Options panel.
Step 5: As shown in the image below, select or click on “Restore files from a current backup.”
Step 6: In the next shown window, locate the backup where you have saved it, and click on restore button below as marked in the image.
Methods 3: Using Shadow Explorer Application
This file recovery solution is recommended to those who have their backup but is currently not working, still the files under backup are not yet deleted. In this case, Shadow Explorer is an application that can help you restoring your files from those backup files which are active, but still disabled by ransomware somehow. Under this circumstance, inbuilt Windows Backup and Recovery option will not work for you, rather the software will do the magic easily. To accomplish file recovery in this case, get through the steps here mentioned:
Step 1: Click the button below to download Shadow Explorer on your computer.
Step 2: Browser the location where you have downloaded the file. Double click and extract the zip file.
Step 3: Click to open ShadowExplorerPortable directory and double click on the file as shown in the image below.
Step 4: A drop down menu will appear on screen, so just select a desired Date and time according to your requirements on the top left of Shadow Explorer app, and choose the files in given interface that you want to restore using the software. Once the selection is done, Click on the button Export..
Methods 4: Using other decryptors
Well, this method might sounds a bit weird as every ransomware identity basically uses different enciphers and methods to encrypt files on targeted computers. But when the a ransomware which has actually infected your machine comes from a ransomware family for which a decryptor is officially working and available as well, then this might work for you. Technically, this method is just based on luck and analysis, still many users have reported this worked for them. So, if you have seen a ransomware has infected your computer, the very first thing you should do is to identity what kind of virus has actually affected your machine. In most of the cases, ransomware attacks are irreversible, still those infections basically comes from a parent ransomware which might be cracked earlier. For an instance, Scarab ransomware or Hiddentear ransomware are some families which can be decrypted. To check your luck if the present ransomware that has affected your machine is decryptable or not. To do so, follow the guidelines below:
Step 1: Check the Ransomware Database Here and check if decryptor is available for the malware
Step 2: In case you find no results, you can check an open source project called NoMoreRansom to find the ransomware details and decryptor, which has affected your machine. If found, download the decryptor on your computer’s local drive. This page is being regularly updated by its officials once a ransomware is discovered in world.
Step 3: Before you proceed with the downlaoded decryptor, make sure you have backup all your important files.
Step 4: Execute the decryptor to scan and restore your files easily.