.kraussmfz Ransomware File Extension

What is .kraussmfz Ransomware File Extension?

The .kraussmfz Ransomware File Extension is an extension that is added to the files corrupted by a malicious infection, popularly known by the name “IEncrypt Ransomware.” Unfortunately, this extension is customizable, and it is not universal. By that we mean that the extension can be created according to the target of cyber criminals. In this particular instance, the attackers are targeting a German-Chinese company known as “KRAUSS-MAFFEI,” which specializes in plastic extrusion machinery. Without a doubt, the infection can be customized and go after other kinds of companies, and when that happens, the extension can be customized as well. That being said, in this report, Anti-Spyware-101.com research team focuses on the version of the threat that adds the .kraussmfz Ransomware File Extension. Removing this extension is not difficult, but recovering files after they are encrypted might be impossible. To learn more about that and the removal of IEncrypt Ransomware, please continue reading.

How does .kraussmfz Ransomware File Extension work?

There is at least one other version of the malicious IEncrypt Ransomware, and that version attaches the “.cmsnwned” extension to the files it corrupts, because the infection is targeted at CMS Nextech, an entirely different company. Regardless of the target, however, the infection is likely to employ the same security backdoors to invade operating systems. According to our experts, the distributor of the threat is most likely to exploit insecure RDP connections or spam emails. In the latter case, the launcher of the infection is usually concealed as a file attachment, and the victim has to execute it themselves, which, of course, they do unknowingly. Once in, the ransomware starts encrypting files immediately, after which, you should find the .kraussmfz Ransomware File Extension attached to most files stored on the infected computer. It seems like the threat only evades files in the %WINDIR% directory, as well as Microsoft files. Besides encrypting files, the infection also creates components. For one, it creates a copy of the original launcher in the %WINDIR%\Microsoft.NET\Framework64\ directory to ensure full functionality even if the launcher is deleted. This copy should have a point of execution in the Windows Registry, and it should be camouflaged as a harmless .NET service.

Although you might not notice when the .kraussmfz Ransomware File Extension is appended – i.e., when the files are encrypted – you should soon notice the ransom note file. A separate file is created for every single file that is corrupted, and so there should be as many ransom note files as there are encrypted files. The names of these ransom notes include the names of the corrupted files. So, for example, a file named “document.doc” is renamed to “document.doc.kraussmfz” after encryption, and the ransom note file created for this file is named “document.doc.kraussmfz_readme.” The same message is carried across all of these ransom note files, and it instructs to email SARAH.BARRICK@PROTONMAIL.COM or LINDA.HARTLEY@TUTANOTA.COM to receive “the ransom amount,” that you are expected to pay to obtain “decryption software” in return. Do not fall for this trick. Once your files are encrypted using the AES-256 key, you will not get them back. In theory, the attackers should have a decryptor on their hands, but if you think that they would give it to you when you paid the ransom, you are naive.

How to remove .kraussmfz Ransomware File Extension

There is no point in deleting .kraussmfz Ransomware File Extension because that will not restore the files. At this point, we do not know if any action would lead to that outcome. Of course, the creator of the infection wants you to think that you can buy a decryptor, but can you trust cyber criminals? No, you cannot. Most likely – if backups do not exist outside your operating system – you will not get your files back, and so we recommend focusing on removing IEncrypt Ransomware. Identifying the launcher file might be the toughest part because its name and location are unknown, but removing the reset of the components should be easy. If you cannot handle the infection on your own, do not hesitate to employ the help of anti-malware software. It is not only useful when it comes to getting rid of stubborn infections but also can help you secure your system and prevent other threats from attacking it in the future.

Removal Guide

1. Locate and Delete the launcher of the infection, whose name and location are unknown.
2. Tap Win+E keys together to launch Windows Explorer.
3. Enter %WINDIR%\Microsoft.NET\Framework64 into the field at the top.
4. Delete the folder that was created by the infection. The folder could be named v4.0.30319 and the file inside could be named mscorsvw.exe.
5. Tap Win+R keys together to launch Run.
6. Type regedit.exe into the dialog box and click OK to access Registry Editor.
7. Go to HKLM\SYSTEM\ControlSet001\services\.
8. Delete the key created by the infection. Could be named clr_optimization_v4.0.30319_64.
9. Delete all versions of the ransom note file named in this format: [encrypted file's name].kraussmfz_readme.
10. Empty Recycle Bin to complete the task.
11. Install and run a malware scanner you trust to check for malicious leftovers. Download Removal Tool100% FREE spyware scan and
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Stop these .kraussmfz Ransomware File Extension Processes: