STOP ransomware is the type of malware, whose main idea is to get users to pay ransom in the form of BitCoin to get their files back. Not all variants of this ransomware can be decrypted for free, but we have added the decryptor used by researchers that is often updated with the variants which become eventually decrypted. You can try and decrypt your files using the instructions below, but if they do not work, then unfortunately your variant of the ransomware virus is not decryptable.
Subnote: This article was last updated in September 2019, but we gave it an update in November 2019.
STOP Ransomware – Decrypter Update October 2019
Emsisoft malware researchers have released a new decryption tool, which is able to decrypt ONLINE and OFFLINE keys for 148 variants of the STOP/DJVU ransomware out of 171+ available. The following extensions are supported by the decryption tool:
→ .shadow, .djvu, .djvur, .djvuu, .udjvu, .uudjvu, .djvuq, .djvus, .djvur, .djvut, .pdff, .tro, .tfude, .tfudet, .tfudeq, .rumba, .adobe, .adobee, .blower, .promos, .promoz, .promorad, .promock, .promok, .promorad2, .kroput, .kroput1, .pulsar1, .kropun1, .charck, .klope, .kropun, .charcl, .doples, .luces, .luceq, .chech, .proden, .drume, .tronas, .trosak, .grovas, .grovat, .roland, .refols, .raldug, .etols, .guvara, .browec, .norvas, .moresa, .vorasto, .hrosas, .kiratos, .todarius, .hofos, .roldat, .dutan, .sarut, .fedasot, .berost, .forasom, .fordan, .codnat, .codnat1, .bufas, .dotmap, .radman, .ferosas, .rectot, .skymap, .mogera, .rezuc, .stone, .redmat, .lanset, .davda, .poret, .pidom, .pidon, .heroset, .boston, .muslat, .gerosan, .vesad, .horon, .neras, .truke, .dalle, .lotep, .nusar, .litar, .besub, .cezor, .lokas, .godes, .budak, .vusad, .herad, .berosuce, .gehad, .gusau, .madek, .darus, .tocue, .lapoi, .todar, .dodoc, .bopador, .novasof, .ntuseg, .ndarod, .access, .format, .nelasod, .mogranos, .cosakos, .nvetud, .lotej, .kovasoh, .prandel, .zatrov, .masok, .brusaf, .londec, .krusop, .mtogas, .nasoh, .nacro, .pedro, .nuksus, .vesrato, .masodas, .cetori, .stare, .carote, .gero, .hese, .seto, .peta, .moka, .kvag, .karl, .nesa, .noos, .kuub, .reco, .bora
If your variant is featured above, it should be 100% decryptable now. Download the Emsisoft decryption tool linked here and follow the instructions below to use Emsisoft decrypter and decrypt your files for free:
Step 1) Right-click on the decrypter and click on Run as Administrator as shown below:
Step 2) Agree with the license terms:
Step 3) Click on “Add Folder” and then add the folders where you want files decrypted as shown underneath:
Step 4) Click on “Decrypt” and wait for your files to be decoded.
Note: Credit for the decryptor goes to Emsisoft researchers who have made the breakthrough with this virus.
STOPDecrypter (STOP Ransomware) – Update September 2019
As reported by Michael Gillespie, the operators of STOP ransomware have altered its code in newer versions. These changes make the way the decrypter work impossible, starting with .coharos, .gero, and .hese. Apparently, the cybercriminals started to utilize proper asymmetrical encryption, meaning the offline keys will no longer be valid for decryption after the release of the final keys Gillespie extracted.
The researcher is now working towards closing this decrypter, and continuing work on a new decrypter that will work only for the old versions of STOP (up to .carote). The new decrypter will completely replace STOPDecrypter once it’s released, and will work in a different way, the researcher said.
This version of STOPDecrypter currently works for .nuksus, .cetori, .carote, and .stare files. It is designed to support specific offline IDs, so it may not be effective for all occasions of the various iterations of the ransomware.
STOP Ransomware – More Information
Researchers have categorised STOP ransomware to be of several different variants.
- The variant with the uppercase extensions.
- The Puma variants of STOP.
- The Djvu STOP variants.
The uppercase file extension variants only include uppercase extensions and they are a bit outdated, while the Puma and Djvu variants are relatively new ones as the Djvu variants of STOP ransomware being the latest viruses to hit the world.
How to Decrypt Your Files Encrypted by STOP Ransomware
To decrypt your files, first you need to download STOP Decryption tool (a.k.a. STOPDecrypter).
After the download, make sure to follow these steps:
Step 1) Extract the decrypter somewhere:
Step 2) Run it as an administrator:
Step 3) Click on “Select Directory” and then select a folder, where your important files are encrypted.
Step 4) Click on Decrypt and be patient. The software will return how many files were decrypted:
Remove STOP Ransomware
Be sure to only remove STOP once your files are decrypted. If the files are not decrypted, you should wait until security researchers update the decryptor to work for your variant. Until then, we strongly recommend that you backup your encrypted files and NOT pay the ransomware. Also, you can try and get some of your files back by following the alternative recovery instructions underneath. They are no guarantee that you will get all your files back, but with their help, you could restore at least some of the files.
To remove STOP ransomware, you should follow the first two steps. If they do not work, then try to remove this virus automatically with an advanced anti-malware software. Such software is often the preffered removal method, since it aims to detect an delete all STOP files plus remove them.