Berta is a dedicated malware researcher, dreaming for a more secure cyber space. Her fascination with IT security began a few years ago when a malware locked her out of her own computer.
Berta is a dedicated malware researcher, dreaming for a more secure cyber space. Her fascination with IT security began a few years ago when a malware locked her out of her own computer.
Berta is a dedicated malware researcher, dreaming for a more secure cyber space. Her fascination with IT security began a few years ago when a malware locked her out of her own computer.
Note! Your computer might be affected by RotorCrypt and other threats.
Threats such as RotorCrypt may be persistent on your system. They tend to re-appear if not fully deleted. A malware removal tool like SpyHunter will help you to remove malicious programs, saving you the time and the struggle of tracking down numerous malicious files. SpyHunter’s scanner is free but the paid version is needed to remove the malware threats. Read SpyHunter’s EULA and Privacy Policy
Berta is a dedicated malware researcher, dreaming for a more secure cyber space. Her fascination with IT security began a few years ago when a malware locked her out of her own computer.
RotorCrypt is the new name of the previously known Rotor cryptovirus. The virus is also ransomware as its past iteration. After the encryption of your files, the extension .c400 will be appended to them along with one of two emails. The emails are [email protected] and [email protected] To see how to remove the virus and how you can try to restore your encrypted files, read the whole article.
Threat Summary
Name
RotorCrypt
Type
Ransomware, Cryptovirus
Short Description
The virus will encrypt your files and demand a ransom as payment for their decryption.
Symptoms
The ransomware appends the .c400 extension to encrypted files. It asks for payment in Bitcoins to the [email protected] and [email protected] email addresses.
Distribution Method
Spam Emails, Email Attachments
Detection Tool
See If Your System Has Been Affected by RotorCrypt
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.
RotorCrypt Ransomware – Update February 2018
Update! A decryption tool is now available for the RotorCrypt ransomware! The tool was created by malware researchers from Kaspersky and can be downloaded from the following link, wrapped inside a .zip archive: Rakhni Decryption Tool.
RotorCrypt Ransomware – Delivery
The RotorCrypt ransomware could be delivered to your computer using different ways. Its payload file could be spread with spam email campaigns. With these emails, the file could be attached and made to look as important. The entirety of the email may look legitimate and try to trick you that you need to open the attachment because its full contents cannot be conveyed in the email body. However, if you open that file, your computer becomes infected. The file can be heavily obfuscated and is in most cases an executable.
From the analysis report shown above, you can view that on the VirusTotal site, the file is named Trojan-Ransom.Win32.Rotor.b as some of the detections. The developers of this ransomware could be delivering the file with targeted attacks or through sharing services and social media. Do not be opening executables from suspicious emails, especially if they are of unknown origins. Scan these files with a security tool and check their signatures and size, beforehand. You should take a look at the ransomware prevention tips in our forum topic.
RotorCrypt Ransomware – Description
RotorCrypt ransomware is discovered to be a new variant of the Rotor Virus (cocoslim98). Now, it uses new executables to spread its malicious files. You can view in the Payload Security platform, the detection of one such executable file is called GWWABPFL.exe:
When the payload file of the RotorCrypt virus is executed on a computer, it spawns lots of processes, according to the malware researchers of Payload Security. The virus is still mainly orientated around targeting servers, although many Windows machines have been infected, too.
When RotorCrypt is active, it could set up values in the Windows Registry, whereupon it gains persistence. The values are set inside entries of that registry and make the ransomware launch automatically with every boot of the Windows operating system. Afterward, files get encrypted, and a tiny note with the payment instructions is created. You can view that ransom note in the screenshot right here:
The ransom note reads the following:
Good day
Your files were encrypted/locked As evidence can decrypt file 1 to 3 1-30MB The price of the transcripts of all the files on the server: 7 Bitcoin
Recommend to solve the problem quickly and not to delay
Also give advice on how to protect Your server against threats from the network
(Files sql mdf backup decryption strictly after payment)!
The RotorCrypt ransomware does not give you any specific deadline for paying the criminals for the data decryption process. It also makes the offer of free decryption for a couple of files as a testing procedure. Nonetheless, its demands are high with the ransom amount which is demanded and that the decryption of some files will be only available after payment. The ransom price that is asked is 7 Bitcoins, and that amounts to over 4400 US dollars.
You shouldn’t think of paying these extortionists, as no one can guarantee that you will return your files to what they were after payment. The cybercriminals will probably use the money to make other ransomware or do more criminal acts. You should try to decrypt as many files as possible using the test decryption service that is provided and wait to see if there is a solution available.
A full list of extensions that are encrypted by this ransomware virus is not available yet, but the following file types are reported to be encrypted by RotorCrypt ransomware:
All of the encrypted files will have the extension [email protected]____.c400 or [email protected]____.c400 appended to them. That is the only place where the contact email is given and why the ransomware may be called with these names among users. The extension .c400 is used in this variant.
The RotorCrypt ransomware is very likely to delete the Shadow Volume Copies of the Windows Operating System with the following command:
→vssadmin.exe delete shadows /all /Quiet
Continue reading to check in what ways you could try to restore some of your data. Kaspersky may have a possible solution in the form of a decryptor tool.
Remove RotorCrypt and Restore .c400 Files
If your computer got infected with the Rotor ransomware virus, you should have some experience in removing malware. You should get rid of this ransomware as fast as possible before it can have the chance to spread further and infect more computers. You should remove the ransomware and follow the step-by-step instructions guide given below. To see ways that you can try to recover your data, see the step titled 2. Restore files encrypted by RotorCrypt.
Note! Your computer system may be affected by RotorCrypt and other threats. Scan Your PC with SpyHunter SpyHunter is a powerful malware removal tool designed to help users with in-depth system security analysis, detection and removal of threats such as RotorCrypt. Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter’s malware removal tool to remove the malware threats. Read our SpyHunter 5 review. Click on the corresponding links to check SpyHunter’s EULA, Privacy Policy and Threat Assessment Criteria.
To remove RotorCrypt follow these steps:
1. Boot Your PC In Safe Mode to isolate and remove RotorCrypt files and objects
OFFER
Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your PC with SpyHunter
Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter’s malware removal tool to remove the malware threats. Read our SpyHunter 5 review. Click on the corresponding links to check SpyHunter’s EULA, Privacy Policy and Threat Assessment Criteria
Boot Your PC Into Safe Mode
1. For Windows XP, Vista and 7. 2. For Windows 8, 8.1 and 10. Fix registry entries created by malware and PUPs on your PC.
For Windows XP, Vista and 7 systems:
1. Remove all CDs and DVDs, and then Restart your PC from the “Start” menu. 2. Select one of the two options provided below:
– For PCs with a single operating system: Press “F8” repeatedly after the first boot screen shows up during the restart of your computer. In case the Windows logo appears on the screen, you have to repeat the same task again.
– For PCs with multiple operating systems: Тhe arrow keys will help you select the operating system you prefer to start in Safe Mode. Press “F8” just as described for a single operating system.
3. As the “Advanced Boot Options” screen appears, select the Safe Mode option you want using the arrow keys. As you make your selection, press “Enter“.
4. Log on to your computer using your administrator account
While your computer is in Safe Mode, the words “Safe Mode” will appear in all four corners of your screen.
Step 1: Open up the Start Menu.
Step 2: Click on the Power button (for Windows 8 it is the little arrow next to the “Shut Down” button) and whilst holding down “Shift” click on Restart.
Step 3: After reboot, a blue menu with options will appear. From them you should choose Troubleshoot.
Step 4: You will see the Troubleshoot menu. From this menu choose Advanced Options.
Step 5: After the Advanced Options menu appears, click on Startup Settings.
Step 6: From the Startup Settings menu, click on Restart.
Step 7: A menu will appear upon reboot. You can choose any of the three Safe Mode options by pressing its corresponding number and the machine will restart.
Some malicious scripts may modify the registry entries on your computer to change different settings. This is why cleaning your Windows Registry Database is recommended. Since the tutorial on how to do this is a bit long and tampering with registries could damage your computer if not done properly you should refer and follow our instructive article about fixing registry entries, especially if you are unexperienced in that area.
2. Find files created by RotorCrypt on your PC
Find files created by RotorCrypt
1. For Windows 8, 8.1 and 10. 2. For Windows XP, Vista, and 7.
For Newer Windows Operating Systems
Step 1:
On your keyboard press + R and write explorer.exe in the Run text box and then click on the Ok button.
Step 2:
Click on your PC from the quick access bar. This is usually an icon with a monitor and its name is either “My Computer”, “My PC” or “This PC” or whatever you have named it.
Step 3:
Navigate to the search box in the top-right of your PC’s screen and type “fileextension:” and after which type the file extension. If you are looking for malicious executables, an example may be “fileextension:exe”. After doing that, leave a space and type the file name you believe the malware has created. Here is how it may appear if your file has been found:
N.B. We recommend to wait for the green loading bar in the navination box to fill up in case the PC is looking for the file and hasn’t found it yet.
For Older Windows Operating Systems
In older Windows OS’s the conventional approach should be the effective one:
Step 1:
Click on the Start Menu icon (usually on your bottom-left) and then choose the Search preference.
Step 2:
After the search window appears, choose More Advanced Options from the search assistant box. Another way is by clicking on All Files and Folders.
Step 3:
After that type the name of the file you are looking for and click on the Search button. This might take some time after which results will appear. If you have found the malicious file, you may copy or open its location by right-clicking on it.
Now you should be able to discover any file on Windows as long as it is on your hard drive and is not concealed via special software.
Use SpyHunter to scan for malware and unwanted programs
3. Scan for malware and unwanted programs with SpyHunter Anti-Malware Tool
Scan your PC and Remove RotorCrypt with SpyHunter Anti-Malware Tool and back up your data
1. Install SpyHunter to scan for RotorCrypt and remove them.2. Scan with SpyHunter, Detect and Remove RotorCrypt. Back up your data to secure it from malware in the future.
Step 1: Click on the “Download” button to proceed to SpyHunter’s download page.
It is recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter. Click on the corresponding links to check SpyHunter’s EULA, Privacy Policy and Threat Assessment Criteria.
Step 2: Guide yourself by the download instructions provided for each browser.
Step 3: After you have installed SpyHunter, wait for it to update automatically.
Step 1: After the update process has finished, click on the ‘Malware/PC Scan’ tab. A new window will appear. Click on ‘Start Scan’.
Step 2: After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the ‘Next’ button.
Step 3: If any threats have been removed, it is highly recommended to restart your PC.
Back up your data to secure it against attacks in the future
IMPORTANT! Before reading the Windows backup instructions, we highly recommend to back up your data with a cloud backup solution and insure your files against any type of loss, even from the most severe threats. We recommend you to read more about it and to download SOS Online Backup.
4. Try to Restore files encrypted by RotorCrypt
Try to Restore Files Encrypted by RotorCrypt
Ransomware infections and RotorCrypt aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested several alternative methods that may help you go around direct decryption and try to restore your files. Bear in mind that these methods may not be 100% effective but may also help you a little or a lot in different situations.
Method 1: Scanning your drive’s sectors by using Data Recovery software. Another method for restoring your files is by trying to bring back your files via data recovery software. Here are some suggestions for preferred data recovery software solutions:
Method 2: Trying Kaspersky and EmsiSoft’s decryptors. If the first method does not work, we suggest trying to use decryptors for other ransomware viruses, in case your virus is a variant of them. The two primary developers of decryptors are Kaspersky and EmsiSoft, links to which we have provided below:
To restore your data in case you have backup set up, it is important to check for Volume Shadow Copies, if ransomware has not deleted them, in Windows using the below software:
Method 4: Finding the decryption key while the cryptovirus sends it over a network via a sniffing tool.
Another way to decrypt the files is by using a Network Sniffer to get the encryption key, while files are encrypted on your system. A Network Sniffer is a program and/or device monitoring data traveling over a network, such as its internet traffic and internet packets. If you have a sniffer set before the attack happened you might get information about the decryption key. See how-to instructions below:
Berta is a dedicated malware researcher, dreaming for a more secure cyber space. Her fascination with IT security began a few years ago when a malware locked her out of her own computer.
Berta is a dedicated malware researcher, dreaming for a more secure cyber space. Her fascination with IT security began a few years ago when a malware locked her out of her own computer.
1. For Windows XP, Vista and 7.
2. For Windows 8, 8.1 and 10.
Fix registry entries created by malware and PUPs on your PC.
1. Install SpyHunter to scan for RotorCrypt and remove them.
Back up your data to secure it from malware in the future.
