Remove Crypt0L0cker ransomware (Files Encrypted Malware)

Crypt0L0cker is a file-encrypting ransomware, which will encrypt the personal documents found on victim’s computer using RSA-2048 key (AES CBC 256-bit encryption algorithm). Crypt0L0cker then displays a message which offers to decrypt the data if a payment of 2.2330749 BTC (around 499 USD) is made within 96 hours, otherwise the data will be destroyed.
Crypt0L0cker will add the .7z.encrypted extension to all your images, videos and other personal documents.


1. How did the Crypt0L0cker ransomware get on my computer?
2. What is Crypt0L0cker Ransomware?
3. Is my computer infected with Crypt0L0cker malware?
4. Is it possible to decrypt files encrypted by Crypt0L0cker ransomware?


1. How did the Crypt0L0cker ransomware get on my computer?

The Crypt0L0cker ransomware is distributed via spam email containing infected attachments or links to malicious websites. Cyber-criminals spam out an email, with forged header information, tricking you into believing that it is from a shipping company like DHL or FedEx. The email tells you that they tried to deliver a package to you, but failed for some reason. Sometimes the emails claim to be notifications of a shipment you have made. Either way, you can’t resist being curious as to what the email is referring to – and open the attached file (or click on a link embedded inside the email). And with that, your computer is infected with the Crypt0L0cker ransomware.





2. What is Crypt0L0cker ransomware?

Crypt0L0cker is a trojan ransomware program which targets all versions of Windows including Windows XP, Windows Vista, Windows 7, and Windows 8. This infection is notable due to how it encrypts the user’s files – namely, it uses AES-265 and RSA encryption method – in order to ensure that the affected user has no choice but to purchase the private key.
When Crypt0L0cker ransomware is first installed on your computer it will create a random named executable in the %AppData% or %LocalAppData% folder. This executable will be launched and begin to scan all the drive letters on your computer for data files to encrypt.
Crypt0L0cker searches for files with certain file extensions to encrypt. The files it encrypts include important productivity documents and files such as .doc, .docx, .xls, .pdf, among others. When these files are detected, this infection will append a new 7z.encrypted extension to the file name.
Files targeted are those commonly found on most PCs today; a list of file extensions for targeted files include:
.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, .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, .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
While encrypting your files, this ransomware also create a DECRYPT_INSTRUCTIONS.txt text file ransom note in each folder that a file has been encrypted and on the Windows desktop. The ransomware will also change your Windows desktop wallpaper to DECRYPT_INSTRUCTIONS.html.
Both the wallpaper and the text ransom note will contain the same information on how to access the payment site and get your files back.
When you go to the URLs listed in the ransom note you will be taken to a TOR site where you can learn how much your ransom is and how to make the payment.
Crypt0L0cker will also hijack your .EXE extensions so that when you launch an executable it will attempt to delete the Shadow Volume Copies that are on the affected computer. It does this because you can use shadow volume copies to restore your encrypted files. Once the infection has successfully deleted your shadow volume copies, it will restore your exe extensions back to the Windows defaults.
When it has finished encrypting your data files it will then show the Crypt0L0cker screen as shown above and demand a ransom of 2.2330749 BTC (around 499 USD) in order to decrypt your files. It also states that you must pay this ransom within 96 hours or the private encryption key will be destroyed on the developer’s servers.

3. Is my computer infected with Crypt0L0cker Ransomware?

If your computer is infected with the Crypt0L0cker ransomware will display a black DECRYTP_INSTRUCTIONS.html wallpaper that covers the entire desktop. A DECRYTP_INSTRUCTIONS.txttext file will be placed on your desktop. Both files contain instruction on how or recover the encrypted files.





The messages displayed by this ransomware infection can be localized depending on the user’s location, with text written in the appropriate language.
CRYPT0L0CLEAR
WARNING we have encrypted your files with Crypt0L0cker virus. Your important files (including those on the network disks, USB, etc): photos, videos, documents, etc. were encrypted with our Crypt0L0cker virus. The only way to get your files back is to pay us. Otherwise, your files will be lost. Caution: Removing of Crypt0L0cker will not restore access to your encrypted files.
===============================================================================
!!! WE HAVE ENCRYPTED YOUR FILES WITH Crypt0L0cker VIRUS !!!
===============================================================================
Your important files (including those on the network disks, USB, etc): photos,
videos, documents, etc. were encrypted with our Crypt0L0cker virus. The only
way to get your files back is to pay us. Otherwise, your files will be lost.
——————————————————————————-
——————————————————————————-
[=] What happened to my files?
Your important files: photos, videos, documents etc. were encrypted with our
Crypt0L0cker virus. This virus uses very strong encryption
algorithm – RSA-2048. Breaking of RSA-2048 encryption algorithm is impossible
without special decryption key.
[=] How can I get my files back?
Your files are now unusable and unreadable, you can verify it by trying to
open them. The only way to restore them to a normal condition is to use our
special decryption software. You can buy this decryption software on
our website (http://[website]).
DECRYTP-INSTRUCTIONS
 WE HAVE ENCRYPTED YOUR FILES WITH Crypt0L0cker VIRUS !!!
===============================================================================Your important files (including those on the network disks, USB, etc): photos,
videos, documents, etc. were encrypted with our Crypt0L0cker virus. The only
way to get your files back is to pay us. Otherwise, your files will be lost.
Use this link to pay for files recovery:
——————————————————————————-
——————————————————————————-
[=] What happened to my files?
Your important files: photos, videos, documents etc. were encrypted with our
Crypt0L0cker virus. This virus uses very strong encryption
algorithm – RSA-2048. Breaking of RSA-2048 encryption algorithm is impossible
without special decryption key.
[=] How can I get my files back?
Your files are now unusable and unreadable, you can verify it by trying to
open them. The only way to restore them to a normal condition is to use our
special decryption software. You can buy this decryption software on

DECRYPTION SERVICE
Decryption Service website:
Buy decryption and get all your files backBuy decryption for 499 USD before 2015-05-12 ‎9‎:‎37‎:‎05‎ ‎AM
OR buy it later with the price of 998 USD
Time left before price increase: 95:18:03
Current price: 2.2330749 BTC (around 499 USD)
Paid until now: 0 BTC (around 0 USD)
Remaining amount: 2.2330749 BTC (around 499 USD)

4. Is it possible to decrypt files encrypted with the Crypt0L0cker ransomware?
No, at this time it’s not possible to recover the files encrypted by the Crypt0L0cker ransomware.
Crypt0L0cker ransomware is notable due to how it encrypts the user’s files – namely, it uses AES-265 and RSA encryption method – in order to ensure that the affected user has no choice but to purchase the private key. The RSA public key can only be decrypted with its corresponding private key. Since the AES key is hidden using RSA encryption and the RSA private key is not available, decrypting the files is not feasible as of this writing.
Brute forcing the decryption key is not realistic due to the length of time required to break an AES encryption key. Unfortunately, once the Crypt0L0cker encryption of the data is complete, decryption is not feasible without paying the ransom.
Because the needed private key to unlock the encrypted file is only available through the cyber criminals, victims may be tempted to purchase it and pay the exorbitant fee. However, doing so may encourage these bad guys to continue and even expand their operations. We strongly suggest that you do not send any money to these cyber criminals, and instead address to the law enforcement agency in your country to report this attack.

News article is edited by: yakura - 10-04-2018, 14:33

Comments 1

Alyssa Fidler
Alyssa Fidler 13 January 2019 23:27
This is so amazing and interesting to hear in free timings from Crypt0L0cker work and I want you to share more links of my blogs which is related to uk essay writing help for the students. Thanks a lot.
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