All .djvu* variants (.djvuu, .udjvu, .djvuq, .uudjvu, .djvus, .djvur, .djvut, .djvup, .djuvq) plus
.pdff, .tro,
.tfude,
.tfudeq, .tfudet, .rumba, .adobe,.adobee and**.blower**
extensions are all newer variants of STOP (DJVU) Ransomware which will
leave a ransom note named _openme.txt or _readme.txt as explained
here.
Dr.Web is able to decrypt some variants of STOP Ransomware (i.e.
.DATAWAIT, .INFOWAIT). Unfortunately, Dr.Web cannot decrypt other STOP Ransomware variants at this time...see
here
.
Demonslay335 (aka Michael Gillespie) released a
free decryption tool (STOPDecrypter) for victims of the
.puma, .pumas and .pumax variants. The decrypter includes a
BruteForcer only for .puma based variants which use XOR encryption, a simple symmetric cipher that is relatively easy to break. The decrypter tool requires victims to provide an
encrypted and original file pair greater than 150KB.
The newer variants are not decryptable at this time without paying the ransom and obtaining the private key from the criminals who created the ransomware unless it is leaked or seized & released by authorities. Without the master private
RSA key that can be used to decrypt your files, decryption is impossible. If feasible, your best option is to
restore from backups, try file recovery software or backup/save your encrypted data as is and wait for a possible solution at a later time. Ignore all Google searches which provide links to bogus and untrustworthy removal/decryption
guides.
There is an ongoing discussion in this topic where victims can post comments, ask questions and seek further assistance. Other victims have been directed there to share information, experiences and suggestions.
When or if a decryption solution is found, that information will be provided in the above support topic and victims will receive notification if subscribed to it. In addition, a news article most likely will be posted on the
Bleeping Computer front page.
Amigo-A (Andrew Ivanov) will also update the applicable Coders Crypto-Ransomware Information page.