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How To Restore Files From The CRPTXXX Ransomware (Complete Removal Guide)

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CRPTXXX is a ransomware family which has already spawned two independent strains. It uses various tactics to infect victim computers and can bypass the Windows UAC prompt. The encryption engine targets various user data and appends the .crptxxx extension to the affected files.

You can remove existing infections easily by using a quality anti-malware solution.

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Crptxxx ransomware is a family of viruses which are comprised of several strains which can easily be removed by following our removal guide.

Crptxxx Ransomware Description

Security experts have discovered a dangerous new family of viruses known as CRPTXXX. At the moment the initial security analysis does not show any identical code with one of the famous malware families we suspect tha this is an independent creation.

The discovered samples shows that the ransomware contains a feature that is borrowed from the code of another threat. Upon infection the virus is able to bypas the UAC prompt which allows the malicious binary file to access elevated privileges. This can potentially lead to some dangerous capablities from being executed:

  1. System Files Modification – By acquiring the necessary rights to access and modify all accessible files at will the encryption engine can compromise even files that belong to the operating system which can render it partially working.
  2. Remote Control – The malicious users behind the virus can use it to sp on the users by introducing a Trojan component.
  3. Information Harvesting – Hackers can use viruses such as this one to download key settngs, stored cookies, account credentials, history and personal files that might hold sensitive information from the infectd machine.
  4. Additional Malware Introduction – The virus can be used to download and institute additional malware to the infected host.

When the virus has acquired the necessary privileges it executes its built-in encryption engine. It starts to encrypt target user data which are renamed with the .crptxxx extension.The complete list includes the following:

.1c, .3fr, .accdb, .ai, .arw, .bac, .bay, .bmp, .cdr, .cer, .cfg, .config, .cr2, .crt, .crw, .css,
.csv, .db, .dbf, .dcr, .der, .dng, .doc, .docm, .docx, .dwg, .dxf, .dxg, .eps, .erf, .gif, .htm, .html,
.indd, .iso, .jpe, .jpeg, .jpg, .kdc, .lnk, .mdb, .mdf, .mef, .mk, .mp3, .mp4, .mrw, .nef, .nrw, .odb, .ode,
.odm, .odp, .ods, .odt, .orf, .p12, .p7b, .p7c, .pdd, .pdf, .pef, .pem, .pfx, .php, .png, .ppt, .pptm, .pptx,
.psd, .pst, .ptx, .r3d, .rar, .raw, .rtf, .rw2, .rwl, .sql, .sr2, .srf, .srw, .tif, .wb2, .wma, .wpd, .wps,
.x3f, .xlk, .xls, .xlsb, .xlsm, .xlsx, .zip

Depending on the strain a ransomware note is crafted:

  1. README.txt, HOW_TO_DECRYPT.tx – For the strain compiled on March 8.
  2. HOW_TO_FIX_!.txt – For the strain compiled on March 16.

The following note is displayed to the victims:

Warning!
All your files have been encrypted with AES
If you want to restore them, use this instructions:
1) Download tor browser
2) Run tor and go to: xxxx://dokg5gcojuswihof.onion
Or you can use tor2web services
xxxx://dokg5gcojuswihof.onion.to
In login panel enter your personal ID: %id%
Follow next instructions on website
If server is down – try connect later
!! Decoders from other users are not compatible with your data, because each users unique encryption key !!
!! Do not try to decrypt your data using third party software, it may cause permanent data loss. !!

As it appears the payment gateway is located on the TOR anonymous network. Each individual infection is assigned with a unique victim ID which the hackers require to be placed in a text boxto reveal the ransom fee.

Crptxxx Ransomware Distribution

The first malware samples were discovered in the beginning of March 2017. The initial security analysis shows that the hackers have used it to target English-speaking users globally. Two separate strains have been identified – one carried in an attack campaign initiated on March 8 and another one in March 16. At the moment we cannot judge which is the primary infection method but we suspect that the following are used:

  • Email Spam – The hackers employ bulk email spam messages which use social engineering tricks to try and infect the target users. Such phishing techniques usually employ body text and files that appear to be sent by legitimate companies or institutions. The most likely used scenario is the use of infected documents that feature malicious macros. Upon interaction with them the payload is delivered to the host system.
  • Download Sites and P2P Networks – Compromised or hacker-controlled download sites are a popuar place for distributing all kinds of dangerous viruses. BitTorrent trackers are another source of infections.
  • Infected Software Installers – The CRPTXXX ransomware can be bundled with software installers distributed over the Internet. This includes a wide variety of well-known applications, games, tools, patches or utilities. Depending on the attack campaign this can include both freeware or trial versions.
  • Direct Attacks – Attacks that use exploit kits or vulnerability testing frameworks can institute remote access and infection with the CRPTXXX ransomware.

Summary of the Crptxxx Ransomware


Name
CRPTXXX Ransomware

File Extensions
.crptxxx

Ransom
Varies

Easy Solution
You can skip all steps and remove CRPTXXX Ransomware ransomware with the help of an anti-malware tool.

Manual Solution
CRPTXXX Ransomware ransomware can be removed manually, though it can be very hard for most home users. See the detailed tutorial below.

Distribution
Spam Email Campaigns, malicious ads & etc.

CRPTXXX Ransomware Ransomware Removal

STEP I: Start the PC in Safe Mode with Network
This will isolate all files and objects created by the ransomware so they will be removed efficiently.

    1) Hit WIN Key + R

Windows-key-plus-R-button-launch-Run-Box-in-Windows-illustrated

    2) A Run window will appear. In it, write “msconfig” and then press Enter
    3) A Configuration box shall appear. In it Choose the tab named “Boot
    4) Mark “Safe Boot” option and then go to “Network” under it to tick it too
    5) Apply -> OK

Or check our video guide – “How to start PC in Safe Mode with Networking

STEP II: Show Hidden Files

    1) Open My Computer/This PC
    2) Windows 7

      – Click on “Organize” button
      – Select “Folder and search options
      – Select the “View” tab
      – Go under “Hidden files and folders” and mark “Show hidden files and folders” option

    3) Windows 8/ 10

      – Open “View” tab
      – Mark “Hidden items” option

    show-hidden-files-win8-10

    4) Click “Apply” and then “OK” button

STEP III: Enter Windows Task Manager and Stop Malicious Processes

    1) Hit the following key combination: CTRL+SHIFT+ESC
    2) Get over to “Processes
    3) When you find suspicious process right click on it and select “Open File Location
    4) Go back to Task Manager and end the malicious process. Right click on it again and choose “End Process
    5) Next you should go folder where the malicious file is located and delete it

STEP IV: Remove Completely CRPTXXX Ransomware Ransomware Using SpyHunter Anti-Malware Tool

Manual removal of CRPTXXX Ransomware requires being familiar with system files and registries. Removal of any important data can lead to permanent system damage. Prevent this troublesome effect – delete CRPTXXX Ransomware ransomware with SpyHunter malware removal tool.

SpyHunter anti-malware tool will diagnose all current threats on the computer. By purchasing the full version, you will be able to remove all malware threats instantly. Additional information about SpyHunter / Help to uninstall SpyHunter

STEP V: Repair Windows Registry

    1) Again type simultaneously the Windows Button + R key combination
    2) In the box, write “regedit”(without the inverted commas) and hit Enter
    3) Type the CTRL+F and then write the malicious name in the search type field to locate the malicious executable
    4) In case you have discovered registry keys and values related to the name, you should delete them, but be careful not to delete legitimate keys

Further help for Windows Registry repair

STEP VI: Recover Crptxxx Files

SpyHunter anti-malware tool will diagnose all current threats on the computer. By purchasing the full version, you will be able to remove all malware threats instantly. Additional information about SpyHunter / Help to uninstall SpyHunter

How To Restore Crptxxx Files

    1) Use present backups
    2) Use professional data recovery software

      Stellar Phoenix Data Recovery – a specialist tool that can restore partitions, data, documents, photos, and 300 more file types lost during various types of incidents and corruption.
      Data Recovery Pro by ParetoLogic – a Microsoft Partner program that is very powerful. It can recover not only local files but also deleted emails and connected drives.
    3) Using System Restore Point

      – Hit WIN Key
      – Select “Open System Restore” and follow the steps


restore-files-using-system-restore-point

    4) Restore your personal files using File History

      – Hit WIN Key
      – Type “restore your files” in the search box
      – Select “Restore your files with File History
      – Choose a folder or type the name of the file in the search bar

    restore-your-personal-files-using-File-History-bestecuritysearch

      – Hit the “Restore” button
For a faster solution, you can run a scan with an advanced malware removal tool and delete Crptxxx Ransomware completely with a few mouse clicks.

SpyHunter anti-malware tool will diagnose all current threats on the computer. By purchasing the full version, you will be able to remove all malware threats instantly. Additional information about SpyHunter / Help to uninstall SpyHunter

Martin Beltov

Martin graduated with a degree in Publishing from Sofia University. As a cyber security enthusiast he enjoys writing about the latest threats and mechanisms of intrusion.