Cryp1 ransomware virus: what it is and how to remove it

Cryp1 virus (latest variant known as UltraCrypter) is an encryption parasite which branches from the infamous CryptXXX ransomware family. In fact, UtraCrypter is considered to be the third version of this virus, so, you should not be surprised to find it labeled as CryptXXX 3.0 in other Internet sources.

Facts checked October 6, 2026. Removal steps tested on Windows 11 (26H2) and checked against Microsoft's and the browser makers' current documentation. Sections marked as our earlier report are the original text: they describe the threat as it was then and have not been reviewed since. The 2026 status, the removal steps and the questions are current.

Automatic

Get a free scan and check if your PC is infected.

Fortect finds malware, unwanted programs and the Windows damage they leave behind, and repairs it in one pass.

A free scan checks for the encryptor still on the PC; it does not decrypt .cryp1 files.

Remove it nowTo use the full-featured product, you have to purchase a license for Fortect. The scan is free.

Do it yourself · free Remove Cryp1 ransomware virus yourself 6 steps, about 18 minutes, no software needed.

Start the steps
Cryp1 ransomware virus: cryp1 virus
Cryp1 ransomware virus as our 2017 report showed it.

Cryp1 ransomware virus: summary

Detection namesNo Microsoft detection name is known
Ransom noteNot recorded in our earlier report
ContactNot recorded in our earlier report
Encrypted file extension.cryp1
DecryptorNo free decryptor is known for this variant; check No More Ransom (nomoreransom.org) for updates
DistributionNot recorded in the old report
Removal

Scan the PC with security software to find and remove the malware and anything installed with it. Fortect scans Windows for malware and repairs the system files and settings it damaged.

Remove it nowTo use the full-featured product, you have to purchase a license for Fortect. The scan is free.
Show 9 more facts
DamageNot recorded in the old report
NameCryp1 ransomware virus
TypeFile-encrypting ransomware
SymptomsFiles renamed with a new extension
Evidence4 write-ups by security sites; details still limited
Encrypted files.cryp1
Free decryptorNo free decryptor is known (checked 6 October 2026)
First seen4 July 2017
Facts checked6 October 2026
  • File extension: .cryp1

From our report of Jul 2017 · not reviewed since

More from our earlier report on Cryp1 ransomware virus

  • Nevertheless, victims of this parasite have an option: they can now decrypt their files for free using Kaspersky's Rannoh Decryptor.
  • All your files are encrypted.
  • Your files are encrypted If you do not pay for decrypting until , the decryption cost will increase 2 and will be 1008 USD 96 hours remaining We present you a special software – UltraDeCrypter that will allow you to decrypt your files.
  • You can pay using Bitcoin, getting them by the way most convenient for you.
  • You need to create a Bitcoin-wallet (e-wallet or other method).
  • Buy Bitcoin on one of the trading platforms.
  • Send 1.2 BTC to Bitcoin address.
  • Enter the ID of your Bitcoin-transaction.
  • Do not provide incorrect information!
  • Otherwise, the payment amount will be increased by several times, or your account will be blocked!)

How Cryp1 ransomware virus behaves

From our report of Jul 2017 · not reviewed since

Cryp1 virus origins, developement and working principles

Cryp1 virus (latest variant known as UltraCrypter) is an encryption parasite which branches from the infamous CryptXXX ransomware family.

In fact, UtraCrypter is considered to be the third version of this virus, so, you should not be surprised to find it labeled as CryptXXX 3.0 in other Internet sources.

The initial name of the virus stems from the .Cryp1 extensions that the encrypted files obtain after being processed by the ransomware. Files featuring this extension will no longer be accessible and changing the file extensions back to the regular ones will not help to decrypt them.

Like most ransomware, this money extortion-focused virus benefits from the users by locking the important data on the computer and demanding ransom in exchange for the files. Make sure you perform a complete Cryp1 removal using or similar security software first!

The criminals state their demands and data recovery options in ransom note called !(Hex code ID).html, while an image file !(Hex code ID).bmp with the same message replaces the infected computer's desktop picture. The ransom note goes like this:

It is not the full ransom note though. It only serves as a key of entering your personalized decryption service page online. On the site, victims are asked to submit their Identification Code which then opens the complete data recovery guide.

It may seem like a good idea to download UltraDeCrypter tool and fix all your problems, but you should bare in mind that this tool is offered to you by the cyber criminals, so it is highly unlikely that it will be of any use. There is a greater chance that it will only make matters worse by exposing your computer to some additional risks.

This program differs from other, more sophisticated ransomware viruses because it takes a lot of time and computer resources for this virus to encrypt the data. In a way, this feature works on behalf of the user because after noticing unusual system slowdowns and errors there is still time to terminate the virus.

If you notice some suspicious and unusual activity on your computer, you should disconnect it from the network and run a scan of your system with some reliable virus scanner. If you are quick and observant enough, you might be able to stop and remove Cryp1 before it encrypts all the data on the computer.

Cryp1 ransomware virus: cryp1 virus
Cryp1 ransomware virus in our 2017 report.
Cryp1 ransomware virus: screenshot
Cryp1 ransomware virus in our 2017 report.

How to remove Cryp1 ransomware virus

Tools you'll need

All of these are free except where noted. Download them on a clean device if the infected PC is offline.

  • A USB stick: to keep the ransom note, two or three encrypted files and screenshots off the infected PC.
  • Microsoft Defender Offline: built into Windows 11 and Windows 10; scans before Windows starts, so running malware cannot hide.
  • Microsoft Safety Scanner: a second, portable scanner with current signatures; each download works for 10 days.
  • ID Ransomware: identifies the family from the note and one encrypted file and says whether a decryptor exists.
  • No More Ransom: the free decryptors from police and security companies; check it again every few months.
  • Fortect (optional): scans Windows for malware and repairs the system files and settings it damaged. The free scan is in the box above.

How to remove Cryp1 ransomware virus and get your files back

Work in this order.

Disconnecting comes first, removal comes before any restore, and nothing here asks you to contact the attackers.

  1. Step 1: Disconnect the PC and unplug backup drives

    Cryp1 ransomware virus encrypts everything it can reach, including drives and shares you connect later. Cut the network first: cable out, or Wi-Fi off from the taskbar.

    Then unplug every USB stick and backup disk and pause cloud sync, so the encrypted versions do not replace your online copies. Do not reconnect any of them until the ransomware is removed from the Windows 11 or Windows 10 PC.

    Windows 11 quick settings with Wi-Fi turned off
    Windows 11: turn off Wi-Fi to take the PC offline.

    Full procedure with screenshots: Ransomware: first steps, finding a decryptor and recovering files

  2. Step 2: Save the ransom note and identify the family

    Find the ransom note, usually a .txt, .html or .hta file in every folder or on the desktop, and copy it with one or two encrypted files to a USB stick.

    From another device, upload them to ID Ransomware or No More Ransom's Crypto Sheriff, which name the family from the note and the file extension. Write down the contact address and your personal ID from the note for the report.

    Warning: Never contact the attackers from the infected Windows 11 or Windows 10 PC.

    A ransom note text file next to encrypted files in File Explorer
    Windows 11: the ransom note and encrypted files to copy for identification.

    Full procedure with screenshots: Ransomware: first steps, finding a decryptor and recovering files

  3. Step 3: Check for a free decryptor

    For Cryp1 ransomware virus, no free decryptor is known (checked 6 October 2026). Search the family name in the No More Ransom decryption tools list and in the free decryptors of Emsisoft, Avast and Kaspersky, because new tools appear years after an attack.

    Important: Keep the encrypted files even if nothing works today, and do not pay before every free option is ruled out: payment does not guarantee a working key.

    Decryptors run on Windows 11 and Windows 10, but only after the ransomware itself is removed.

    Full procedure with screenshots: Ransomware: first steps, finding a decryptor and recovering files

  4. Step 4: Remove the ransomware before you restore or decrypt

    Restoring or decrypting files while Cryp1 ransomware virus still runs lets it encrypt them again. Run a Full scan in Windows Security > Virus & threat protection > Scan options, then the Microsoft Defender Antivirus (offline scan).

    If the ransomware blocks Windows Security, start Safe Mode with Networking and scan from there. Some families install a password stealer as well, so let both scans finish on Windows 11 or Windows 10.

    Windows Security Scan options with Microsoft Defender Antivirus offline scan selected
    Windows 11: Windows Security > Virus & threat protection > Scan options.

    Full procedure with screenshots: Run a Microsoft Defender Offline scan

  5. Step 5: Look for shadow copies of the files

    Open Command Prompt as administrator and run vssadmin list shadows. If it lists copies dated before the attack, right-click a folder with encrypted files in File Explorer, choose Properties > Previous Versions, and open or restore a version from before that date.

    ShadowExplorer, a free tool, shows the same copies when the tab is empty or hidden. Most current families delete shadow copies, so an empty list is normal, but the check takes two minutes on Windows 11 or Windows 10.

    Command Prompt running vssadmin list shadows
    Windows 11: vssadmin list shadows shows whether shadow copies exist.

    Full procedure with screenshots: Ransomware: first steps, finding a decryptor and recovering files

  6. Step 6: Restore the files from a backup or recover deleted originals

    Restore from an external backup, File History or OneDrive's version history, choosing a date before the attack. Connect the backup drive only after the scans are clean, or the ransomware encrypts it too.

    If there is no backup, file recovery software can sometimes find the deleted originals, because some ransomware writes an encrypted copy and deletes the original file.

    Stop writing to the drive and try recovery on Windows 11 or Windows 10 before new files overwrite the space.

    Full procedure with screenshots: Recover deleted files (Recycle Bin, backups, OneDrive) On uGetFix

Instructions for each browser and system

The detailed steps for every browser and system this guide covers. Open the one you use.

Manual removal using Safe Mode

Important! →
Manual removal guide might be too complicated for regular computer users. It requires advanced IT knowledge to be performed correctly (if vital system files are removed or damaged, it might result in full Windows compromise), and it also might take hours to complete. Therefore, we highly advise using the automatic method provided above instead.

Step 1. Access Safe Mode with Networking

Manual malware removal should be best performed in the Safe Mode environment.

Windows 7 / Vista / XP

  1. Click Start > Shutdown > Restart > OK.
  2. When your computer becomes active, start pressing F8 button (if that does not work, try F2, F12, Del, etc. - it all depends on your motherboard model) multiple times until you see the Advanced Boot Options window.
  3. Select Safe Mode with Networking from the list.Windows 7/XP

Windows 10 / Windows 8

  1. Right-click on Start button and select Settings.
    Settings
  2. Scroll down to pick Update & Security.
    Update and security
  3. On the left side of the window, pick Recovery.
  4. Now scroll down to find Advanced Startup section.
  5. Click Restart now.
    Reboot
  6. Select Troubleshoot.Choose an option
  7. Go to Advanced options.Advanced options
  8. Select Startup Settings.Startup settings
  9. Press Restart.
  10. Now press 5 or click 5) Enable Safe Mode with Networking.Enable safe mode

Step 2. Shut down suspicious processes

Windows Task Manager is a useful tool that shows all the processes running in the background. If malware is running a process, you need to shut it down:

  1. Press Ctrl + Shift + Esc on your keyboard to open Windows Task Manager.
  2. Click on More details.
    Open task manager
  3. Scroll down to Background processes section, and look for anything suspicious.
  4. Right-click and select Open file location.
    Open file location
  5. Go back to the process, right-click and pick End Task.
    End task
  6. Delete the contents of the malicious folder.

Step 3. Check program Startup

  1. Press Ctrl + Shift + Esc on your keyboard to open Windows Task Manager.
  2. Go to Startup tab.
  3. Right-click on the suspicious program and pick Disable.
    Startup

Step 4. Delete virus files

Malware-related files can be found in various places within your computer. Here are instructions that could help you find them:

  1. Type in Disk Cleanup in Windows search and press Enter.
    Disk cleanup
  2. Select the drive you want to clean (C: is your main drive by default and is likely to be the one that has malicious files in).
  3. Scroll through the Files to delete list and select the following: Temporary Internet Files
    Downloads
    Recycle Bin
    Temporary files
  4. Pick Clean up system files.
    Delete temp files
  5. You can also look for other malicious files hidden in the following folders (type these entries in Windows Search and press Enter): %AppData%
    %LocalAppData%
    %ProgramData%
    %WinDir%

After you are finished, reboot the PC in normal mode.

From our report of Jul 2017 · not reviewed since

Ransomware attack prevention possibilities

Ransomware programs are very malicious but rather easy to create, so there is little hope that these programs can ever be stopped, unless, of course, the cyber criminals find other, more profitable ways to extort money from the users. However, by not paying the ransom and deleting Cryp1 from your computer, you can help diminish the hackers' motivation to create similar programs in the future.

The best way to prevent Cryp1 from infecting your computer is:

  • Equipping your device with a combination of several powerful virus-fighting utilities, such as firewall and antivirus system
  • Carefully browsing online and avoiding random downloads, such as software updates
  • Refraining from opening unfamiliar emails
  • Keeping away from flashy ads or lottery winning notifications.

From our report of Jul 2017 · not reviewed since

Cryp1 removal and data recovery solutions

The Cryp1 virus cannot be restored without a special key.

Luckily, such key already exists and you will find its download link in the data recovery guidelines below. But before you attempt recovering your data, you have to make sure that you fully remove Cryp1 from the infected device. Security tools can serve this purpose well.

Free Cryp1 decryptor

Download free Cryp1 decryptor here.

Report it and recover your files

Report it

Report the attack even if you do not expect the files back: insurers and banks ask for the report number, and police use the contacts in the note to link cases.

United States
FBI IC3 · FTC ReportFraud

Give the victim ID, the note and the date the files were encrypted. A business that holds personal data may also have to notify its data protection authority, in the EU within 72 hours.

Make the next attack harmless

Cryp1 ransomware virus could only hurt the files that had no second copy, and the signs (files that end in .cryp1 and no longer open) showed exactly which ones those were. The 3-2-1 rule fixes that:

  • three copies
  • two media
  • one disconnected

A practical version for a home PC: OneDrive or another cloud backup with version history, plus an external disk that you plug in once a week for File History and then unplug. Test a restore now and then by opening a few files from the backup on another device.

Details, schedules and what not to back up are in our 3-2-1 backup guide for Windows.

Access your website securely from any location

When you work on the domain, site, blog, or different project that requires constant management, content creation, or coding, you may need to connect to the server and content management service more often. The best solution for creating a tighter network could be a dedicated/fixed IP address.

If you make your IP address static and set to your device, you can connect to the CMS from any location and do not create any additional issues for the server or network manager that needs to monitor connections and activities. VPN software providers like can help you with such settings and offer the option to control the online reputation and manage projects easily from any part of the world.

Recover files after data-affecting malware attacks

While much of the data can be accidentally deleted due to various reasons, malware is one of the main culprits that can cause loss of pictures, documents, videos, and other important files.

More serious malware infections lead to significant data loss when your documents, system files, and images get encrypted. In particular, ransomware is is a type of malware that focuses on such functions, so your files become useless without an ability to access them.

Even though there is little to no possibility to recover after file-locking threats, some applications have features for data recovery in the system. In some cases, can also help to recover at least some portion of your data after data-locking virus infection or general cyber infection.

Questions about Cryp1 ransomware virus

How do I open .cryp1 files?

You cannot open them by renaming or by choosing another program. The .cryp1 ending shows that Cryp1 ransomware virus encrypted the content, and only the matching key can reverse it. Renaming a file back to .docx or .jpg changes nothing except the icon, and it can confuse a future decryptor, so leave the names as they are.

To get the content back, use a backup, an unencrypted copy elsewhere, or a decryptor listed on No More Ransom if one exists for Cryp1 ransomware virus. Store the encrypted files on an external disk until then.

When will a decryptor for Cryp1 ransomware virus be released?

Nobody can promise a date. When we last checked, on 6 October 2026, no free decryptor is known. Decryptors usually appear after one of three events:

  • police seize the attackers' servers and keys
  • the authors leak or publish the master keys
  • researchers find a mistake in how the ransomware generates keys

Some families got a tool within weeks, others never. Keep the encrypted files and the note on an external drive, check No More Ransom every few months, and follow news about the Cryp1 ransomware virus family. A decryptor may need an original file, so keep any unencrypted copies too.

How did Cryp1 ransomware virus get on my computer?

The way Cryp1 ransomware virus spreads has not been documented yet, so look at your own recent activity. On home PCs, ransomware most often comes with cracked programs, game cheats, key generators and fake updates, or with an e-mail attachment that was opened. On business networks, attackers usually log in through Remote Desktop with a stolen or guessed password.

Think back to what was downloaded or installed in the days before files that end in .cryp1 and no longer open, and check the Downloads folder and Installed apps sorted by date. Keep anything suspicious for your report, but do not run it again.

Can a data-recovery company decrypt my files for a fee?

Only if a decryptor already exists or the company pays the attackers for you. Some "ransomware recovery" services advertise that they can decrypt families with no known flaw; in practice they negotiate with the attackers and add their own fee. Others use the same free tools listed on No More Ransom.

Before you hire anyone, ask in writing how they will recover the files, whether they will contact the attackers and what happens if they fail. A legitimate service answers clearly. If a free decryptor exists for your family, you can run it yourself.

Did Cryp1 ransomware virus steal my files or passwords?

We do not know yet. Nothing published so far shows data theft by Cryp1 ransomware virus, but the only confirmed sign is files that end in .cryp1 and no longer open, which says nothing about what happened before. Many current ransomware attacks copy files or run a password stealer first, so it is wise to act as if they did.

From a clean device, change the passwords that were saved in the browsers on this PC, starting with e-mail and banking, sign out of all sessions and turn on two-step verification. Watch bank statements and account activity for the next few weeks.

Should I pay the ransom?

We advise against it, and so do the FBI, Europol and national cyber agencies. Payment does not guarantee a working tool: some attackers never reply, some tools damage files, and some variants have no decryptor at all. Paying also funds further attacks and can make you a target again.

Before considering payment, try every recovery option in this guide and report the attack. Companies must involve their legal adviser and insurer, because payments to sanctioned groups can be illegal. If files are truly irreplaceable, store the encrypted copies and wait; decryptors sometimes appear later.

Is Cryp1 ransomware virus the same as other ransomware with a similar name?

Not necessarily. Ransomware names come from the file extension, the note or a word in the code, so unrelated families often end up with similar names, and one family can appear under several names. The difference matters: a decryptor or advice for one family does not fit another and can damage files.

Compare the ending added to your files and the exact name of the note with the summary table at the top of this guide, then upload the note and one encrypted file to ID Ransomware from a clean device. If the result names another family, follow the guide for that family instead.

Can I just remove .cryp1 from the file names?

You can try it on a copy, but for real ransomware it will not help. The .cryp1 extension is only a label; the file content has been scrambled with a key the attackers hold.

If a renamed copy opens normally, the malware only renamed files, which happens with some fake ransomware, and you can rename the rest back. If it does not open, leave the files as they are. Renaming encrypted files can confuse a decryptor later, so always work on copies.

Will .cryp1 spread to my other drives?

It can. Ransomware encrypts every drive and network share it can reach while it runs, so external disks, USB sticks and shared folders connected during the attack may also have files ending in .cryp1. Disconnect everything now, then check each device from a clean computer.

Do not plug a backup drive into the infected PC until the ransomware has been removed with an offline scan. Cloud folders such as OneDrive sync the encrypted versions, but they keep earlier versions you can usually restore.

Will Fortect remove Cryp1 ransomware virus?

Fortect scans Windows for malware and unwanted programs and repairs the system files and settings they change, and its free scan shows what it finds on your PC before you decide anything.

For Cryp1 ransomware virus, follow the plan above as well: the browser steps take back permissions and settings that no scanner treats as a threat, and uninstalling the program that brought it removes the source.

Run Microsoft Defender's full scan and, if anything was found, its offline scan as a second opinion. If the symptoms are gone after the plan and both scans are clean, there is nothing more to do.

Sources

  1. CISA: StopRansomware (read October 6, 2026)
  2. No More Ransom (read October 6, 2026)
  3. FTC: How to recognize, remove and avoid malware (read October 6, 2026)
  4. Microsoft Learn: Microsoft Defender Offline (read October 6, 2026)
  5. Microsoft Learn: How Microsoft names malware (read October 6, 2026)

More removal guides

Questions and experiences: Cryp1 ransomware virus

Still seeing it, or found something we did not cover? Ask here: members and our editors answer. Reading is open; writing needs a free account.

0 comments

…

5,600 members already hereReading, writing, commenting and voting. 0 verified · 325 joined this year