Tips to delete Calum Ransomware and recover encrypted files
According to expert, Calum Ransomware is described as file-encrypting malware that belongs to Phobos ransomware family. This perilous threat is specifically designed to locks down all your important files stored in the infected PC. During encryption, all affected files are appended with victim’s unique ID, developers email address and by using “.calum” extensions. After locking the files, it displays messages on the system screen asking you to buy the decryption key.
The ransom note contains the basic information which states that all your files have been encrypted by using strong cryptographic algorithm and can only be unlocked by using decryption tool. As a guarantee that decryption is possible they ask you to send 1-2 files and they can decrypt them free without demanding any money so that you can trust them. It is true that the encrypted files can only be accessed now with the decryption tool which is presented in the cyber-criminals server. They also warn user not to decrypt files by using third party software or manual decryption otherwise it may cause permanent data loss.
However, all such claims are spam because once payments are submitted they do not provide you original decryption key. In most cases, it has been seen that the key that they sent either duplicate or don’t work. You cannot expect any refund from them because you don’t know their real identity. They demand the money to be paid in crypto-currency such as Bitcoins in the provided wallet address.
How it works?
After successful intrusion, first of all it will completely scan the computer hard disk and find all the files. Usually, it targets the most important files and data that are used by the users. Without wasting time, it encrypts the targeted files and makes it unusable. The encrypted files will be in form of MS Office docs, multimedia files, PDF files, documents, databases and so on. On every locked file, an additional .calum extension is added. For example, a file named 1.jpg will get changed to 1.jpg.Calum. Whenever you try to access the encrypted file, the ransom note appears on the screen.
Text presented in Calum Ransomware’s HTML application:
All your files have been encrypted!
All your files have been encrypted due to a security problem with your PC. If you want to restore them, write us to the e-mail [email protected]
Write this ID in the title of your message –
In case of no answer in 24 hours write us to this e-mail:[email protected]
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 tool that will decrypt all your files.
Free decryption as guarantee
before paying you can send us up to 5 files for free decryption. The total size of files must be less than 4Mb (none 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, click ‘Buy bitcoins’, and select the seller by payment method and price.
Also you can find other places to buy Bitcoins and beginners guide here:
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 with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.
How to remove Calum Ransomware and recover files?
In order to remove Calum Ransomware and all its associated files, we recommend you to scan with powerful anti-malware removal tool that can eliminate all infiltrated ransomware completely and safely from the machine. After completing removal process, you can recover your files by using existing backup files if you have created earlier before encryption. In case if you don’t have any backup file in that situation you can use third party data recovery software.
Name: Calum Ransomware
Type: Ransomware, Crypto-virus, File-locker
Danger Level: High
Ransom demanding message: info.hta and info.txt
Symptoms: Increased use of RAM and CPU, and decreased HDD space, unique additional extension name on every encrypted files
Removal and Data recovery: Use a powerful anti-malware tool to remove the ransomware. Backup files, Shadow Volume copies or a data recovery tool could be used to restore the encrypted files.
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.