Remove CryptoWall 3.0 and Restore the Encrypted Files

A new and improved variant of the CryptoWall ransomware has been infecting computers worldwide in the past few days. The new CryptoWall 3.0 uses a localized ransom message and passes traffic to a website where the victims can pay for the decryption key needed to unlock their files through Tor and I2P anonymous networks.

CryptoWall is a file-encrypting type of threat, which once activated on the infected machine encrypts certain files on it and demands a fine of $500 in order to provide the victim with the decryption key. The ransom is to be paid in Bitcoin digital currency in the first 168 hours.

Threat Summary

Name	CryptoWall 3.0
Type	Ransomware
Short Description	The user’s files are encrypted and unusable.
Symptoms	A ransom note is displayed to the victim.
Distribution Method	Via malicious attachments.
Detection Tool	See If Your System Has Been Affected by CryptoWall 3.0 Download Malware Removal Tool
User Experience	Join our forum to discuss CryptoWall 3.0.

The New Features of CryptoWall 3.0

New Tor to Web gateways are used by the new version of CryptoWall: torman2.com, torforall.com, torroadsters.com, and torwoman.com. Either one of them redirects the victim to the same web page containing the payment instructions, but the IDs for tracking the payments are unique.

The payment period is extended from five days to a whole week, after which the fee is raised to $1000.

The crooks have created additional files containing information about the payment and the restoring of the encrypted data:

• HELP_DECRYPT.HTML: uses your web browser to display information about the threat, encryption and payment methods
• HELP_DECRYPT.PNG: contains details about CryptoWall 3.0
• HELP_DECRYPT.TXT: the same as the previous one, but in plain text
• HELP_DECRYPT.URL: uses your current web browser to display the CryptoWall 3.0 Decrypt Service when Windows is loaded

The ransom message displayed by CryptoWall 3.0 reads:

What happened to your files?
All of your files were protected by a strong encryption with RSA-2048 using CryptoWall 3.0.
More information about the encryption keys using RSA-2048 can be found here: http://en.wikipedia.org/wiki/RSA_(cryptosystem)

What does this mean?
This means that the structure and data within your files have been irrevocably changed, you will not be able to work with them, read them or see them, it is the same thing as losing them forever, but with our help, you can restore them.

How did this happen?
Especially for you, on our server was generated the secret key pair RSA-2048 – public and private.
All your files were encrypted with the public key, which has been transferred to your computer via the Internet.
Decrypting of your files is only possible with the help of the private key and decrypt program, which is on our secret server.
What do I do?
Alas, if you do not take the necessary measures for the specified time then the conditions for obtaining the private key will be changed.
If you really value your data, then we suggest you do not waste valuable time searching for other solutions because they do not exist.

Once the file-encryption process is over, the original files are deleted. In case you do not have a backup of your files, you could use reliable software to restore them or part of them from the Windows shadow copies. Below you will find detailed instructions on how to do so.

Connection to I2P Fails

The new version of CryptoWall has been detected by security experts at Microsoft and the French researcher Kafeine, who has reported that the communication with the C&C (Command and Control) server is encoded with the RC4 algorithm and uses the I2P protocol.

As Kafeine tried to test the sample of the new threat, he received an error message every time he attempted to connect to the proxies. The notification, the researcher received, stated that the I2P website was not available due to various reasons – inability to connect to systems or congested network. The hackers seemed to be ready for cases like this one, because they have provided detailed instructions on how to gain access to the decryption service on the Tor network.

Cryptowall 3.0 New Distribution Methods (September 4, 2015)

How is Cryptowall 3.0 dropped onto the system?

Cryptowall ransomware has been around long enough for researchers to gather detailed information about its methods. The ransomware is distributed primarily via emails with .ZIP attachments. The latter contain executable files masqueraded as PDFs. The files in question can be any form of business communication such as:

• Invoices
• Purchase orders (POs)
• Bills
• Complaints

Once the malicious PDF is launched, CryptoWall will be installed onto the system. The malicious files will be located in one of the two folders %AppData% or %Temp%. Then, the threat will start scanning the system’s drivers to find files to encrypt. All drive letters will be scanned, removal drives, network shares and DropBox mapping included. Any drive letter on the infected system will be checked for data files.

Here is a list of all the locations where CryptoWall 3.0 may be situated:

• %Temp%
• C:\[random]\[random].exe
• %AppData%
• %ProgramData%
• %LocalAppData%

Can I Find the Files Encrypted by CryptoWall 3.0?

Files encrypted by CryptoWall 3.0 will be stored together with their paths in the Windows Registry. The subkey location is in the following format:

→HKCU\Software\[unique computer ID]\[random ID]

An actual example looks like that:

→HKCU\Software\03DA0C0D2383CCC2BC8232DD0AAAD117\01133428ABDEEEFF

The process will be repeated for every encrypted file under the mentioned key.

ListCwall can be used as well. It is a tool created by Bleeping Computer to automate the finding and exporting of the encrypted files. The tool can also backup the locked files to another location, in case the user needs to archive them and reformat the PC.

Also, here is a list with file extensions which CryptoWall 3.0 seeks to encrypt:

→ .3dm, .3ds, .3fr, .mcmeta, .vfs0, .mpqge, .kdb, .db0, .dba, .rofl, .hkx, .bar, .upk, .das, .iwi, .litemod, .asset, .forge, .ltx, .bsa, .apk, .re4, .sav, .lbf, .slm, .bik, .epk, .rgss3a, .pak, .big, wallet, .wotreplay, .xxx, .desc, .py, .m3u, .flv, .js, .css, .rb, .png, .jpeg, .txt, .p7c, .p7b, .p12, .pfx, .pem, .crt, .cer, .der, .x3f, .srw, .pef, .ptx, .r3d, .rw2, .rwl, .raw, .raf, .orf, .nrw, .mrwref, .mef, .erf, .kdc, .dcr, .cr2, .crw, .bay, .sr2, .srf, .arw, .3fr, .dng, .3g2, .3gp, .3pr, .7z, .ab4, .accdb, .sql, .mp4, .7z, .rar, .m4a, .wma, .avi, .wmv, .csv, .d3dbsp, .zip, .sie, .sum, .ibank, .t13, .t12, .qdf, .gdb, .tax, .pkpass, .bc6, .bc7, .bkp, .qic, .bkf, .sidn, .sidd, .mddata, .itl, .itdb, .icxs, .hvpl, .hplg, .hkdb, .mdbackup, .syncdb, .gho, .cas, .svg, .map, .wmo, .itm, .sb, .fos, .mov, .vdf, .ztmp, .sis, .sid, .ncf, .menu, .layout, .dmp, .blob, .esm, .vcf, .vtf, .dazip, .fpk, .mlx, .kf, .iwd, .vpk, .tor, .psk, .rim, .w3x, .fsh, .ntl, .arch00, .lvl, .snx, .cfr, .ff, .vpp_pc, .lrf, .m2, .jpe, .jpg, .cdr, .indd, .ai, .eps, .pdf, .pdd, .psd, .dbf, .mdf, .wb2, .rtf, .wpd, .dxg, .xf, .dwg, .pst, .accdb, .mdb, .pptm, .pptx, .ppt, .xlk, .xlsb, .xlsm, .xlsx, .xls, .wps, .docm, .docx, .doc, .odb, .odc, .odm, .odp, .ods, .odt, .accde, .accdr, .accdt, .ach, .acr, .act, .adb

User Behavior and Ransomware. Phishing Scams

What we described about the distribution methods so far can mean only one thing – the cyber criminals solely rely on the user’s interaction with malicious spam. The method is known as phishing – a form of social engineering often deployed to spread malware or collect user credentials. This is an exemplary email of how the scam may appear to users:

Image Source: Symantec

Cryptowall Precautionary Tips

To bypass malicious infections, avoid downloading archive files such as .zip, .jar, .tar, .7z, .msi, and executable/script files such as .com, .exe, .scr, .bat, .js, .jse, .vb, .vbe, .wsf, .wsh, .cmd. Always bear in mind that real companies would avoid sending such types of files, unless you had a previous arrangement set.

Additionally, you can use online website rating services such as Norton Safe Web to determine if a website is safe or unsafe to visit. With file-encrypting threats, the best precautionary advice is a very simple one. Back-up your files. Aways think of this, especially when your data is valuable and you keep a lot of business documents on your PC.

You can also check out the general precautionary tips we have on our forum about ransomware, which come full force for CryptoWall 3.0 as well.

IMPORTANT

CryptoWall 3.0 can encrypt files on a network share in case it is mapped as a drive letter. If the network share is not mapped as such, CryptoWall 3.0 will not affect the files located there. To secure open shares, users can allow only writable access to the needed user groups or authorized users. The tip is quite important when it comes to threats such as CryptoWall.

Remove CryptoWall 3.0 and Restore the Encrypted Files

Follow the instructions provided below to remove all traces of this ransomware. Keep in mind that the best and most secure way to do that is by using a strong anti-malware program.

Manually delete CryptoWall 3.0 from your computer

Note! Substantial notification about the CryptoWall 3.0 threat: Manual removal of CryptoWall 3.0 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 CryptoWall 3.0 files and objects

Boot Your PC Into Safe Mode

1. For Windows 7,XP and Vista. 2. For Windows 8, 8.1 and 10.

For Windows XP, Vista, 7 systems:

1. Remove all CDs and DVDs, and then Restart your PC from the “Start” menu.
2. Select one of the two options provided below:

– For PCs with a single operating system: Press “F8” repeatedly after the first boot screen shows up during the restart of your computer. In case the Windows logo appears on the screen, you have to repeat the same task again.

– For PCs with multiple operating systems: Тhe arrow keys will help you select the operating system you prefer to start in Safe Mode. Press “F8” just as described for a single operating system.

3. As the “Advanced Boot Options” screen appears, select the Safe Mode option you want using the arrow keys. As you make your selection, press “Enter“.

4. Log on to your computer using your administrator account

While your computer is in Safe Mode, the words “Safe Mode” will appear in all four corners of your screen.

Step 1: Open the Start Menu

Step 2: Whilst holding down Shift button, click on Power and then click on Restart.
Step 3: After reboot, the aftermentioned menu will appear. From there you should choose Troubleshoot.

Step 4: You will see the Troubleshoot menu. From this menu you can choose Advanced Options.

Step 5: After the Advanced Options menu appears, click on Startup Settings.

Step 6: Click on Restart.

Step 7: A menu will appear upon reboot. You should choose Safe Mode by pressing its corresponding number and the machine will restart.

2. Find malicious files created by CryptoWall 3.0 on your PC

Find malicious files created by CryptoWall 3.0

1. For Windows 8, 8.1 and 10. 2. For Windows 7,XP and Vista.

For Newer Windows Operating Systems

Step 1:

On your keyboard press  + R and write explorer.exe in the Run text box and then click on the Ok button.

Step 2:

Click on your PC from the quick access bar. This is usually an icon with a monitor and its name is either “My Computer”, “My PC” or “This PC” or whatever you have named it.

Step 3:

Navigate to the search box in the top-right of your PC’s screen and type “fileextension:” and after which type the file extension. If you are looking for malicious executables, an example may be “fileextension:exe”. After doing that, leave a space and type the file name you believe the malware has created. Here is how it may appear if your file has been found:

N.B. We recommend to wait for the green loading bar in the navination box to fill up in case the PC is looking for the file and hasn’t found it yet.

For Older Windows Operating Systems

In older Windows OS’s the conventional approach should be the effective one:

Step 1:

Click on the Start Menu icon (usually on your bottom-left) and then choose the Search preference.

Step 2:

After the search window appears, choose More Advanced Options from the search assistant box. Another way is by clicking on All Files and Folders.

Step 3:

After that type the name of the file you are looking for and click on the Search button. This might take some time after which results will appear. If you have found the malicious file, you may copy or open its location by right-clicking on it.

Now you should be able to discover any file on Windows as long as it is on your hard drive and is not concealed via special software.

3. Fix registry entries created by CryptoWall 3.0 on your PC

Fix registry entries created by CryptoWall 3.0 on your PC.

Some malicious scripts may modify the registry entries of your computer to change different settings. This is why manual clean up of your Windows Registry Database is strongly recommended. Since the tutorial on how to do this is a bit lenghty, we recommend following our instructive article about fixing registry entries.

Automatically remove CryptoWall 3.0 by downloading an advanced anti-malware program

1. Remove CryptoWall 3.0 with SpyHunter Anti-Malware Tool

Remove CryptoWall 3.0 with SpyHunter Anti-Malware Tool

1. Install SpyHunter to scan for and remove CryptoWall 3.0.2. Scan with SpyHunter to Detect and Remove CryptoWall 3.0.

Step 1:Click on the “Download” button to proceed to SpyHunter’s download page.

Download

Malware Removal Tool

It is highly recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter.

Step 2: Guide yourself by the download instructions provided for each browser.
Step 3: After you have installed SpyHunter, wait for it to automatically update.

Step1: After the update process has finished, click on the ‘Scan Computer Now’ button.

Step2: After SpyHunter has finished scanning your PC for any CryptoWall 3.0 files, click on the ‘Fix Threats’ button to remove them automatically and permanently.

Step3: Once the intrusions on your PC have been removed, it is highly recommended to restart it.

2. Back up your data to secure it against infections and file encryption by CryptoWall 3.0 in the future

Back up your data to secure it against attacks in the future

IMPORTANT! Before reading the Windows backup instructions, we highly recommend to back up your data automatically with cloud backup and insure it against any type of data loss on your device, even the most severe. We recommend reading more about and downloading SOS Online Backup .

SOS Online Backup

To back up your files via Windows and prevent any future intrusions, follow these instructions:

1. For Windows 7 and earlier 1. For Windows 8, 8.1 and 10 1. Enabling the Windows Defense Feature (Previous Versions)

1-Click on Windows Start Menu

2-Type Backup And Restore
3-Open it and click on Set Up Backup

4-A window will appear asking you where to set up backup. You should have a flash drive or an external hard drive. Mark it by clicking on it with your mouse then click on Next.

5-On the next window, the system will ask you what do you want to backup. Choose the ‘Let Me Choose’ option and then click on Next.

6-Click on ‘Save settings and run backup’ on the next window in order to protect your files from possible attacks by CryptoWall 3.0.

1-Press Windows button + R

2-In the window type ‘filehistory’ and press Enter

3-A File History window will appear. Click on ‘Configure file history settings’

4-The configuration menu for File History will appear. Click on ‘Turn On’. After its on, click on Select Drive in order to select the backup drive. It is recommended to choose an external HDD, SSD or a USB stick whose memory capacity is corresponding to the size of the files you want to backup.

5-Select the drive then click on ‘Ok’ in order to set up file backup and protect yourself from CryptoWall 3.0.

1- Press Windows button + R keys.

2- A run windows should appear. In it type ‘sysdm.cpl’ and then click on Run.

3- A System Properties windows should appear. In it choose System Protection.

5- Click on Turn on system protection and select the size on the hard disk you want to utilize for system protection.
6- Click on Ok and you should see an indication in Protection settings that the protection from CryptoWall 3.0 is on.

Restoring a file via Windows Defense feature:
1-Right-click on the encrypted file, then choose Properties.

2-Click on the Previous Versions tab and then mark the last version of the file.

3-Click on Apply and Ok and the file encrypted by CryptoWall 3.0 should be restored.

3. Restore files encrypted by CryptoWall 3.0

Restore Files Encrypted by CryptoWall 3.0

Security engineers strongly advise users NOT to pay the ransom money and attempt restoring the files using other methods. Here are several suggestions:

To restore your data, your first bet is to check again for shadow copies in Windows using this software:

Shadow Explorer

If this method does not work, Kaspersky have provided a decryptors for files encrypted with the this and other encryption algorithms:

Kaspersky Decryptors

Another method of restoring your files is by trying to bring back your files via data recovery software. Here are some examples of data recovery programs:

• Stellar Phoenix Data Recovery Technicians License(Pro version with more features)
• Stellar Phoenix Windows Data Recovery
• Stellar Phoenix Photo Recovery

There is also the technical option to use a network sniffer:

Another way to decrypt the files is by using a Network Sniffer to get the encryption key, while files are encrypted on your system. A Network Sniffer is a program and/or device monitoring data traveling over a network, such as its internet traffic and internet packets. If you have a sniffer set before the attack happened you might get information about the decryption key.

Optional: Using Alternative Anti-Malware Tools

Remove CryptoWall 3.0 Using Other Alternative Tools

STOPZilla Anti Malware

1. Download and Install STOPZilla Anti-malware to Scan for And Remove CryptoWall 3.0.
Step 1: Download STOPZilla by clicking here.
Step 2: A pop-up window will appear. Click on the ‘Save File’ button. If it does not, click on the Download button and save it afterwards.

Step 3: After you have downloaded the setup, simply open it.
Step 4: The installer should appear. Click on the ‘Next’ button.

Step 5: Check the ‘I accept the agreement’ check circle if not checked if you accept it and click the ‘Next’ button once again.

Step 6: Review and click on the ‘Install’ button.

Step 7: After the installation process has completed click on the ‘Finish’ button.

2. Scan your PC with STOPZilla Anti Malware to remove all CryptoWall 3.0 associated files completely.
Step 1: Launch STOPZilla if you haven’t launched it after install.
Step 2: Wait for the software to automatically scan and then click on the ‘Repair Now’ button. If it does not scan automatically, click on the ‘Scan Now’ button.

Step 3: After the removal of all threats and associated objects, you should Restart your PC.

Berta Bilbao

Berta is the Editor-in-Chief of SensorsTechForum. She is a dedicated malware researcher, dreaming for a more secure cyber space.

More Posts - Website

48 Comments

1. Greg March 9, 2015 at 2:29 pm

   great information! I was infected with the “CRYPTOWALL 3.0” virus recently, it was downloaded from my need to download Google Chrome and the latest Chromecast. It continued to download malware which was very disturbing. If you have heard about this happening when Google Chrome was installed, would you please pass it on to all of your followers.

   thank you and best regards!

   greg

   Reply ↓
   1. Anticryptowall October 11, 2015 at 8:57 am

      Bonjour tout le monde voici une solution, comment protéger vos fichier et documents de ce virus CryptoWall

      https://www.youtube.com/watch?v=kRpJEpJzK1U

      Reply ↓
      1. Milena Dimitrova October 13, 2015 at 7:17 am

         Hi Anticryptowall,

         Are you sure that your method works?

         Reply ↓
         1. Anticryptowall October 15, 2015 at 9:36 am

            Hi Milena Dimitrova
            i did that experience so many times on image disks by various viruses especially by crypto viruses and The result was always positive…

            Reply ↓
            1. Milena Dimitrova October 15, 2015 at 10:34 am

               Hi again,

               What about CryptoWall 3.0, in particular?
2. francis April 29, 2015 at 1:08 pm

   my boss got hit and his memory stick was encrypted. he purchased a new memory stick from sandisk that came with a one year subscription to “RescuePRO”and he was prompted to recover files-he inserted his infected stick and the software restored his files onto his new stick and now his files are in a safe VAULT on the new stick.

   Reply ↓
3. Ina June 1, 2015 at 4:43 pm

   please let me know if there is some solution. I was also caught by this while trying to upgrade Chrome. I am in desperate need of a solution as I don’t have any back ups. Every Microsoft file is infected and decrypted

   Reply ↓
   1. Arthur June 25, 2015 at 9:30 am

      me too. all my files can’t be open.

      Reply ↓
      1. Dirk July 1, 2015 at 9:05 am

         With me also and I also do not restore because this feature is not turned on my computer.
         Please someone?

         Reply ↓
4. tony September 3, 2015 at 2:40 pm

   please helppppppppp all my files were protected by a strong encryption with RSA-2048.

   Reply ↓
   1. BertaB (Post author)September 4, 2015 at 2:45 pm

      Hello, Tony!

      CryptoWall is indeed a nightmare and we are sorry to read that you have been affected by it. RSA algorithm has been deployed by many ransomware threats. You can be sure that many users and security specialists have been trying to break the RSA-2048 encryption. More about the RSA-2048 encryption key that has been targeting computers find here: http://sensorstechforum.com/remove-rsa-2048-encryption-key-from-cryptowall-3-0/

      RSA-2048 can be broken if someone finds a way to create collisions that inherently reduce the expected number of combinations to crack the cipher. Being a cipher, the RSA-2048 algorithm can be cracked by brute force. Brute force cracking can be described as a trial-and-error technique employed by programs to decipher encrypted data like passwords and DES (Data Encryption Standard) keys via extensive effort instead of intellectual force.

      RSA encryption is a type of language that alters the normal code of the file with a unique key. This key can be decrypted via specific software, but it requires a powerful machine. More on the RSA encryption topic and how to remove CryptoWall manually: http://sensorstechforum.com/restore-files-encrypted-via-rsa-encryption-remove-cryptowall-and-other-ransomware-manually/

      Finally, our research team has compiled several easy steps to follow to protect your files from ransomware threats: http://sensorstechforum.com/cryptowall-aaa-files-ransomware-description-protection-and-removal/

      Additionally, if you want to learn more about the methods employed by CryptoWall and the cyber criminals behind it, you can refer to this article: http://blog.trendmicro.com/trendlabs-security-intelligence/cryptowall-3-0-ransomware-partners-with-fareit-spyware/

      Reply ↓
5. Vincent Laurent September 4, 2015 at 2:35 pm

   Thanks, I removed the virus with SpyHunter but my files are still corrupted and i cannot open them. Please help me… how to repair them????

   Reply ↓
6. ITResearcher September 6, 2015 at 12:14 pm

   YOU ALL SOOO SCREWED…

   Reply ↓
7. Steve September 19, 2015 at 1:15 pm

   With original file, encrypt file and public key used to encrypt file, can you decipher other files that used that public key?

   Reply ↓
8. kewin nielsen October 10, 2015 at 5:29 pm

   jeg fik hele mit data drev krypteret af cryptowall 3.0 igennem ransomware(conhost) og den havde enda kryptere min gendanelsespunkter og backup den eneste måde jeg fik mine filere igen var ved hjælp af recuva da cryptowall sleter original filen og overskriver dem med en krypteret

   Reply ↓
9. joao November 18, 2015 at 3:44 pm

   I have files that cannot be opened too.
   I am going to pay the ransom today or tomorrow.
   I have heard that if we pay the ransom the unblock all the files for sure (99% sure).
   They don’t want the files. They just want the money.
   I try everything to unblock my files. Even new karpersky software. Nothing works.

   Did some one have the same experience?
   Did someone pay the ransom before?
   What happened?

   I will leave my experience here soon.

   Reply ↓
   1. Milena Dimitrova November 18, 2015 at 4:18 pm

      Hi joao,

      First of all, sorry to hear you’ve suffered a CryptoWall 3.0 attack!
      Can you please start a topic in our forum – http://sensorstechforum.com/forums/malware-removal-questions-and-guides/? We will try and help you with whatever we can. The forums are more convenient for such discussions 🙂

      Stay tuned,

      the STF team

      Reply ↓
      1. kate November 20, 2015 at 6:54 pm

         Hi joao,
         Did you pay it? What the result?
         I have the same problem but i’m trying to solve it..

         Reply ↓
   2. Richard December 11, 2015 at 5:42 pm

      Hola Joao, trabajo como técnico en una empresa y unos de los gerentes, fue ataco por este virus, me gustaría saber si pudiste recuperar la información luego de realizar el pago, y que cantidad de información, pudieron recuperar?

      Reply ↓
   3. sham January 1, 2016 at 7:05 pm

      have you paid them >?? and recovered your files or not ?

      Reply ↓
10. Daniel fornerino December 10, 2015 at 10:00 pm

    buenas tardes, mi caso es que el equipo fue infectado con el virus, formatee el equipo pero toda la información abre. tengo informacion de vida o muerte y me urge recuperarla. alguien que me pueda colaborar. por favor

    Reply ↓
    1. badGift February 19, 2016 at 3:59 pm

       hmm..
       si può restituire il sistema indietro, ma è possibile solo in caso che abbia fato il backup prima.
       Se no- puoì scaricare quelche programma di ricuperazione come recuva ,getdatabach o diskdrill..però, purtroppo tali software non recuperanno il 100% ,solo i dati eliminati recentemente . ecco uno dei tali programma http://www.cleverfiles.com/disk-drill-windows.html
       forse ti aiuti,

       Reply ↓
11. Vencislav Krustev December 11, 2015 at 1:21 pm

    Hello, Fornerino

    In case you have been infected with Cryptowall, it is important to know that it uses a VERY strong algorhitm, called RSA-2048. Its decryption may take years to complete. We advise you to try restoring your files by going to a professional data recovery expert or attempting to use on of the aftermentioned tools:

    Kaspersky Rector Decryptor

    This decryption tool is very simple to use and
    http://support.kaspersky.com/viruses/utility#rectordecryptor

    EaseUS Data Recovery Wizard Free

    Here is a free program which uses different methods to search through your computer and recover files that are even deleted beyond all saving. It is no guarantee that it will work, but some say they have recovered at least 10 percent of their files and some other files were partially broken. So in case you want to try it out, here is the download link for the tool:

    http://www.easeus.com/datarecoverywizard/free-data-recovery-software.htm

    Shadow Explorer

    You may as well try running Shadow Explorer in case you have File History or backup enabled. You can download it from here, but note that TeslaCrypt may as well have malicious scripts that delete any backups and previous file versions. Here is the download link for Shadow Explorer:

    http://www.shadowexplorer.com/downloads.html

    Look for the latest version and you may as well download the portable one since it saves you time.

    This is as far as I can suggest, try it and reply whether or not you have been successful. Again, there is absolutely no guarantee that any of the methods are working, but we are talking about encrypted files here, after all so it may be worth the try.

    Reply ↓
12. Sham December 14, 2015 at 8:13 am

    My all files are encrypted with RSA-4096.

    I can not open any file.They are asking for 500 USD for decryption key. Please anybody can help me to decrypt my files as i don’t have any backup restore.

    Reply ↓
    1. Milena Dimitrova December 14, 2015 at 9:19 am

       Hi Sham,

       First, can you please tell me how you got to know that RSA-4096 was used in your case?

       Reply ↓
       1. SERAS December 14, 2015 at 12:23 pm

          Slt Milena!
          Comment tu vas? j’aimerais avoir des notions sur le cryptage, comment cela se passe, avoir un cas pratique!
          Merci d’avance! je laisse mon mail ou si je peux avoir le tien cela me sera d’une très grande utilité

          Reply ↓
13. sham December 14, 2015 at 9:57 am

    hi Milena..
    I found a ransomware file in my every folder…

    Reply ↓
    1. Milena Dimitrova December 14, 2015 at 1:40 pm

       Hi Sham, looking into your case as we speak!

       Reply ↓
       1. sham December 14, 2015 at 3:12 pm

          Dear Milena,

          Waiting for your help….your earlier response will be favorable.
          Thanks

          Reply ↓
          1. Milena Dimitrova December 14, 2015 at 4:04 pm

             Hi Sham,

             A topic has been started in our forum about the particular encryption: http://sensorstechforum.com/forums/malware-removal-questions-and-guides/help!-my-files-were-encrypted-with-strong-rsa-4096-encryption!/msg679/#msg679

             Please provide us with the following information there (it’s easier to discuss in the forum than here) – your system, exact file extensions added to the encrypted files, ransom notes, etc. Also, have you removed the Trojan that has dropped the ransomware?

             Reply ↓
14. Milena Dimitrova December 14, 2015 at 1:36 pm

    Hello SERAS,

    I am fine but really sorry to see so many people falling victims to ransomware. You can send us information about your ransomware case on [email protected].

    Reply ↓
15. Jorge December 17, 2015 at 3:37 am

    Todos mis archivos está con extensión vvv no sé cómo desencriptar los estoy muy angustiado por favor ayuda ya elimine Cryptowall tengo encriptados toda mi información de 20 años de trabajo por favor ayuda

    Reply ↓
    1. Milena Dimitrova December 17, 2015 at 1:37 pm

       Hi Jorge,

       I am deeply sorry to let you know that without a clean copy of your files, you most likely will not be able to restore your information. You can try using TeslaDecoder and Rakhnidecryptor. However, reports indicate that these decoders won’t help with the .vvv extension that belongs to TeslaCrypt ransomware: http://sensorstechforum.com/remove-teslacrypt-and-restore-vvv-encrypted-files/

       Have you removed the ransomware with an anti-malware program?

       Reply ↓
16. Walter January 5, 2016 at 6:04 pm

    E’ successo anche a me. Il problema e’ che ogni file ha un’estensione diversa 0A/0A1/OMF ECC
    Si puo’ fare qualcosa?

    Reply ↓
17. dbgn January 7, 2016 at 1:50 am

    Hi, I also caught this virus but it was only too late that I realized it and now all my files are encrypted with RSA-2048. The file extensions were changed and it seems that the extension for each file is different from any other and none are the same. Some of the file extensions I see now are .p468t,.16G, .n7r0, .us7m, .25sq, .xo3r4 and so many more. I need help.

    Reply ↓
    1. Vencislav Krustev January 7, 2016 at 9:09 am

       Hello @dbgn
       This is typical for Ransomware infections such as CTB Locker and CryptoWall 4.0. In order for me to be able to adequately provide you with assistance I would like you to send me a snip or a screenshot of any ransom message that you may see. It may be a .txt file on your desktop or a picture.

       Use this Forum Topic To Attach A Screenshot In Your Reply

       Reply ↓
       1. walter January 7, 2016 at 10:52 am

          hello , I invierei a file , but I do not know ‘ how to attach it to this message

          Reply ↓
18. charles January 8, 2016 at 5:53 am

    hello vencislav
    mz laptop is infected with thee teslacrzpt virus and all mz files are encrzpted with RSA-4096 key
    could zou help me_ please

    Reply ↓
19. Ter January 20, 2016 at 7:44 pm

    Hi, Friends! My Pc was infected, i do eliminate ransomware using spyhunter, but muy files stay encrypted with .MICRO extention. ¿How i can decrypt the files? Thanks!!

    Reply ↓
    1. Vencislav Krustev January 21, 2016 at 9:26 am

       Hello Ter,

       You have been infected with a variant of TeslaCrypt. For more information check the following article:

       Remove TeslaCrypt and Restore .micro Encrypted Files

       You may also send files so that we can try and help to decrypt them. Here is the address:

       [email protected]

       We will disclose your files and send them back to you if successfully decrypted. Bear in mind that since we receive a lot of files it may take some time.

       Reply ↓
20. Shihas February 3, 2016 at 3:07 pm

    Hi Milena , one of our system got infected with this cryptowall 3 and encrypted the files with .micro extension. I was able to remove the malware but after two days, one of our Network attached storage got affected as well. Now I am wondering how that is possible ? I thought only personal files got affected by this script. 🙁

    Reply ↓
    1. Milena Dimitrova February 5, 2016 at 8:49 am

       Hello Shihas,

       Ransomware is often used in attacks on companies. The bad news is there’s still no solution for .micro encrypted files. We assure you however that security experts (us included) are doing their best to fight this threat and beat its encryption.

       Reply ↓
21. Nani February 4, 2016 at 3:41 am

    i was installed a software .after my .jpg,.mp4 files are changed into a .micro extension .pls help to how to get my old file format .

    Reply ↓
    1. Milena Dimitrova February 5, 2016 at 8:47 am

       Hi Nani,

       Unfortunately, you have been attacked by the latest version of TeslaCrypt ransomware. We are still trying to figure out how to decrypt files encrypted by it. Once we find a solution, we will share it.

       Have you removed the ransomware from the infected computer?

       Reply ↓
22. raluca March 17, 2016 at 3:53 pm

    Hello! My laptop is infected with Cryptowall3.0. I’ve cleaned it, but all my files are encrypted. Any news on how to dectrypt them?
    Thank you!

    Reply ↓
23. Yann Bessin August 21, 2016 at 6:46 am

    Il est à noter qu’Europol a pris conscience du problème des ransomwares et propose dorénavant un portail en ligne pour aider les victimes (https://secuweb.fr/europol-portail-lutter-ransomwares/)

    Reply ↓
    1. SensorsTechForum August 22, 2016 at 9:05 am

       Merci beaucoup 🙂

       Reply ↓
24. Dennis September 5, 2016 at 5:53 pm

    I have removed the ransomware but now i have encrypted files ending with .albigec. Does anybody now how to decrypt the files? (Cryptowall 3.0)

    Reply ↓

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