Remove CryptoWall 3.0 and Restore the Encrypted Files

Berta Bilbao

Berta is a dedicated malware researcher, dreaming for a more secure cyber space. Her fascination with IT security began a few years ago when a malware locked her out of her own computer.

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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.

Note! Your computer system may be affected by CryptoWall 3.0 and other threats.
Scan Your PC with SpyHunter
SpyHunter is a powerful malware removal tool designed to help users with in-depth system security analysis, detection and removal of threats such as CryptoWall 3.0.
Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter’s malware removal tool to remove the malware threats. Read our SpyHunter 5 review. Click on the corresponding links to check SpyHunter’s EULA, Privacy Policy and Threat Assessment Criteria.

To remove CryptoWall 3.0 follow these steps:

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 XP, Vista and 7. 2. For Windows 8, 8.1 and 10. Fix registry entries created by malware and PUPs on your PC.

For Windows XP, Vista and 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 up the Start Menu.

Step 2: Click on the Power button (for Windows 8 it is the little arrow next to the “Shut Down” button) and whilst holding down “Shift” click on Restart.

Step 3: After reboot, a blue menu with options will appear. From them you should choose Troubleshoot.

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

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

Step 6: From the Startup Settings menu, click on Restart.

Step 7: A menu will appear upon reboot. You can choose any of the three Safe Mode options by pressing its corresponding number and the machine will restart.

Some malicious scripts may modify the registry entries on your computer to change different settings. This is why cleaning your Windows Registry Database is recommended. Since the tutorial on how to do this is a bit long and tampering with registries could damage your computer if not done properly you should refer and follow our instructive article about fixing registry entries, especially if you are unexperienced in that area.

2. Find files created by CryptoWall 3.0 on your PC

Find files created by CryptoWall 3.0

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

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.

Use SpyHunter to scan for malware and unwanted programs

3. Scan for malware and unwanted programs with SpyHunter Anti-Malware Tool

Scan your PC and Remove CryptoWall 3.0 with SpyHunter Anti-Malware Tool and back up your data

1. Install SpyHunter to scan for CryptoWall 3.0 and remove them.2. Scan with SpyHunter, Detect and Remove CryptoWall 3.0. Back up your data to secure it from malware in the future.

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

Download

Malware Removal Tool

It is 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. Click on the corresponding links to check SpyHunter’s EULA, Privacy Policy and Threat Assessment Criteria.

Step 2: Guide yourself by the download instructions provided for each browser.

Step 3: After you have installed SpyHunter, wait for it to update automatically.

Step 1: After the update process has finished, click on the ‘Malware/PC Scan’ tab. A new window will appear. Click on ‘Start Scan’.

Step 2: After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the ‘Next’ button.

Step 3: If any threats have been removed, it is highly recommended to restart your PC.

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 with a cloud backup solution and insure your files against any type of loss, even from the most severe threats. We recommend you to read more about it and to download SOS Online Backup .

SOS Online Backup

4. Try to Restore files encrypted by CryptoWall 3.0

Try to Restore Files Encrypted by CryptoWall 3.0

Ransomware infections and CryptoWall 3.0 aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested several alternative methods that may help you go around direct decryption and try to restore your files. Bear in mind that these methods may not be 100% effective but may also help you a little or a lot in different situations.

Method 1: Scanning your drive’s sectors by using Data Recovery software.
Another method for restoring your files is by trying to bring back your files via data recovery software. Here are some suggestions for preferred data recovery software solutions:

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

Method 2: Trying Kaspersky and EmsiSoft’s decryptors.
If the first method does not work, we suggest trying to use decryptors for other ransomware viruses, in case your virus is a variant of them. The two primary developers of decryptors are Kaspersky and EmsiSoft, links to which we have provided below:

• Kaspersky Decryptors
• Emsisoft Decryptors

Method 3: Using Shadow Explorer

To restore your data in case you have backup set up, it is important to check for Volume Shadow Copies, if ransomware has not deleted them, in Windows using the below software:

• Shadow Explorer

Method 4: Finding the decryption key while the cryptovirus sends it over a network via a sniffing tool.

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. See how-to instructions below:

Instructions on How to Find Decryption Key for Files Encrypted By Ransowmare

Berta Bilbao

Berta is a dedicated malware researcher, dreaming for a more secure cyber space. Her fascination with IT security began a few years ago when a malware locked her out of her own computer.

More Posts - Website

Berta Bilbao

Berta is a dedicated malware researcher, dreaming for a more secure cyber space. Her fascination with IT security began a few years ago when a malware locked her out of her own computer.

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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