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Remove CryptoRoger Ransomware and Restore .crptrgr Files

CryptoRoger-sensorstechforumIf your files have a .crptrgr extension added to them, the reason for that is CryptoRoger – a modern ransomware also known as a crypto-virus. What it does is it infects users via spam campaigns of malicious URLs or files. After infection, the virus uses a strong cipher called Advanced Encryption Standard which is 256 bits in strength to scramble the files of its victims and extort them for 0.5 bitcoins (~300 USD) for the restoration of access to their files.

We strongly advise you NOT to pay any ransom money to cyber-criminals and instead attempt other methods to revert the files encrypted by them after removing this virus using the instructions in this article.

Threat Summary

Name CryptoRoger
Type Ransomware
Short Description The virus encrypts files with the AES-256 algorithm and asks a ransom of 0.5 BitCoins for decryption.
Symptoms Files are encrypted and become inaccessible. A .crptrgr file extension is added. A ransom note with instructions for paying the ransom shows as a .html file.
Distribution Method Spam Emails, Email Attachments, File Sharing Networks.
Detection Tool See If Your System Has Been Affected by CryptoRoger

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User Experience Join our forum to Discuss Locky Ransomware.

CryptoRoger Ransomware – Infection Strategy

To infect the maximum amount of users possible, CryptoRoger uses a .vbs script which automatically runs. This script may be downloaded onto the victim’s computer via several different methods:

Users complain in security forums that they might have been infected by clicking on malicious e-mail messages, which they believed were legitimate.

CryptoRoger Ransomware Virus – Detailed Analysis

Once it has been dropped on your computer, CryptoRoger contains the following malicious files, located in various Windows directories:

  • %AppData%\Microsoft\Windows\Start Menu\Programs\Startup\x.vbs
  • %AppData%\bg.jpeg
  • %AppData%\files.txt
  • %AppData%\keys.dat
  • %UserProfile%\CryptoRoger\{CryptoRoger’s primary executive}.exe

After dropping the files, CryptoRoger starts modifying heavily the Windows Registry Editor, by creating a key named “CryptoRoger” along with several different values in them:

  • HKCU\Software\CryptoRoger\
  • HKCU\Software\CryptoRoger\AESFORUPRIVATE
  • HKCU\Software\CryptoRoger\UPRIV

If the file encryption VBS script is activated, CryptoRoger begins encrypting user files. It may encrypt all file extensions associated with:

  • Videos.
  • Audio files.
  • Databases.
  • Documents.
  • Pictures.
  • Virtual Machines.

The ransomware excludes executable files which may damage Windows OS so it can leave it intact. After encryption, the ransomware drops an HTML file on %Desktop% leading to a web link with ransom instructions, which are the following:

“Sorry, but the trouble has occurred 🙁
Files on your PC have been securely encrypted
Do not worry there is a solution
The cost of decrypting files – 0.5 Bitcoin (~$360)
(but if you will not behave professionally price may increase several times.)
To get the Bitcoin address for payment write me at uTox.
You can FREE decrypt one file, send it to me in uTox
All that you need to contact me using a uTox messenger and finding me on ID:
F12CCE864152DA1421CE717710EC61A8BEC74A71….
Manual for contact:
-download messenger uTox at the link DOWNLOAD
-extract utox.exe from zip archive and run utox.exe
-Enter ID in the field “Search/Add Friends” and click + in the uTox window
-Enter a message “Decrypt files” and click Add
-expect an answer
Important! Your uTox needs to be constantly online to the message was received!
Information for decrypting:
Send me file keys.dat when he needed. The file is required for decrypting.”

Regarding encryption, the encrypted files are no longer accessible and the file extension .crptrgr added to them, for example:

  • Filename.pptx.crptrgr

The code for the files used for encryption is considered to be AES-256 – one of the strongest in the world at present times and direct decryption would theoretically take years on a powerful device.

CryptoRoger – Conclusion, Removal, and File Restoration Attempt

In brief, this ransomware is not here to fool around and leaves the user no option but to pay the ransom money. However, security experts strongly advise against it because for one there is no guarantee you will get your files back and for other, you fund cyber-criminal operations.

To remove CryptoRoger completely, we strongly advise you to follow the instructions below. If you want maximum effectiveness, an excellent tool to help you is an advanced anti-malware program which will automatically detect the malicious files and registry entries associated with this virus and remove them.

To try and restore your files, we strongly advise attempting other alternative solutions from a safe PC, like the ones we have suggested in step 3 – “Restore files encrypted by CryptoRoger” below. They are not 100% effective but if you have a backup set up and have recently modified the files you may restore some of them for free.

Manually delete CryptoRoger from your computer

Note! Substantial notification about the CryptoRoger threat: Manual removal of CryptoRoger requires interference with system files and registries. Thus, it can cause damage to your PC. Even if your computer skills are not at a professional level, don’t worry. You can do the removal yourself just in 5 minutes, using a malware removal tool.

1. Boot Your PC In Safe Mode to isolate and remove CryptoRoger files and objects
2.Find malicious files created by CryptoRoger on your PC
3.Fix registry entries created by CryptoRoger on your PC

Automatically remove CryptoRoger by downloading an advanced anti-malware program

1. Remove CryptoRoger with SpyHunter Anti-Malware Tool
2. Back up your data to secure it against infections and file encryption by CryptoRoger in the future
3. Restore files encrypted by CryptoRoger
Optional: Using Alternative Anti-Malware Tools

Vencislav Krustev

A network administrator and malware researcher at SensorsTechForum with passion for discovery of new shifts and innovations in cyber security. Strong believer in basic education of every user towards online safety.

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