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CRYPT1 File Extension

The CRYPT1 file extension was created by Developer and is also known as the UltraCrypter Ransomware Encrypted File. CRYPT1 is classified as a Encoded Files and The format of this file type has not been determined yet. You can open CRYPT1 files in Microsoft Notepad program.

UltraCrypter Ransomware Encrypted File Type

UltraCrypter Ransomware Encrypted File Type
Extension .crypt1
Developer Not Available
Popularity 5.0 (51 Votes)
Mime Type mime-type/not.available
Default Program Microsoft Notepad
Category Encoded Files
Format Not Available
Updated 7/1/2025

What is a CRYPT1 File Type?

UltraCrypter is a type of malware used by cybercriminals that hijacks your files and forces you to pay the author to unlock your files. It can be inserted into your computer using an executable file disguised as another type of file. Usually this is done through malicious ads on compromised websites or spam with attached files disguised as d' other files.

When the program executes on your computer, it encrypts and renames the standard files that are important to you with a .crypt1 extension. It usually consists of documents, images, videos and backup files, such as .PDF, .JPG and .DB files. An example.jpg file becomes example.jpg.crypt1. The virus changes the background of the desktop screen then generates a ransom note .HTML informing you of the takeover and what to do to recover your files, which is typically a payment via Bitcoin.

The CRYPT1 files became dominant in May 2016 and are similar to .CRYPT files. There are currently no programs available to efficiently restore your files. If you have a backup of your files, you can perform a system restore.

Free Online CRYPT1 Tools & Apps

Access powerful and secure free online CRYPT1 tools to convert, view, edit, merge, split, and compare CRYPT1 files — all without installing any software. Our tools support the .CRYPT1 (UltraCrypter Ransomware Encrypted File) file extension and run smoothly in any modern browser.

Select a tool below to explore features and manage your CRYPT1 files directly from your device with ease.

CRYPT1 Files Common Issues

There are few common issues with the UltraCrypter Ransomware Encrypted File .CRYPT1 File Extensions while opening the .CRYPT1 files on Windows and MacOs, we have solution to those issues such as:

Can't Open CRYPT1 Files?

  1. You must have supported software programs installed for UltraCrypter Ransomware Encrypted File on your system such as Microsoft Notepad.
  2. Associate default Microsoft Microsoft Notepad program for *.crypt1 (UltraCrypter Ransomware Encrypted File) files.


All Platform Software Programs for CRYPT1 File Extension

List of all softwares that can open the CRYPT1 files on each platforms such as Windows, Mac, iOS, Linux, Web and Android, you may click the each software link for more details for other supported formats for each software and the verified direct download links for each software with complete lisensing details.

Microsoft Windows logo image Open CRYPT1 File on Windows

Software License Developer
Microsoft Notepad image. Microsoft Notepad 1903 for Windows Bundled Microsoft
Notepad++ image. Notepad++ 6 for Windows Freeware Notepad Plus Plus

MacOs logo image - FileProInfo.comOpen CRYPT1 File on Mac OS

Software License Developer

Linux logo image - FileProInfo.comOpen CRYPT1 file on Linux

Software License Developer

Website logo image - FileProInfo.comOpen CRYPT1 file on Web

Software License Developer

iOS logo image - FileProInfo.comOpen CRYPT1 file on iOS

Software License Developer

Android logo image - FileProInfo.comOpen CRYPT1 file on Android

Software License Developer

About Licensing

  1. Free Trial This software are often used for an attempt period, like 14 days, before requiring payment. Some trial versions have a reduced feature set.
  2. Free This software is liberal to use. Examples include open-source , freeware software, like free programs supported by advertising.
  3. Free+ This software is liberal to download and use, but contains in-app purchases (IAP) to unlock additional content or functionality.
  4. Paid This software must be purchased so as to use it. it's going to be offered as a perpetual license or ongoing subscription.
  5. Included with OS This software is bundled with an OS , like Windows, macOS, or Android.

CRYPT1 file extension icon image.About CRYPT1 - UltraCrypter Ransomware Encrypted File

FileProInfo is to help you understand about the UltraCrypter Ransomware Encrypted File with *.CRYPT1 suffix, and provide the complete detail as how to open, edit, convert, merge, split and compare it with other related software programs, software download links and free online apps and tools.

Our professional team members at FileProInfo have been individually researched and verified the details for CRYPT1. We want to be 100% accurate and publish the information about file formats, tools, apps and software programs that we have tested and validated.

If you would like to suggest any additions or updates to this page for CRYPT1, please let us know.

Updated 7/1/2025