Ransom.Crysis is Malwarebytes’ detection name for a family of ransomware also known as CrySis or Dharma that targets Windows systems.
Users of infected systems will find a ransomnote on their desktop when the decryption routine has been completed. They may also notice that all their restore points are gone and that their files are no longer accessible because they have been encrypted and given a new extension.
Ransom.Crysis is ransomware that encrypts files on an infected system. Ransomware in general is a type of malware that prevents users from accessing their system or personal files and demands a ransom payment in order to regain access.
Ransom.Crysis uses several methods to infect a system, it can be done manually by use of weak or leaked RDP passwords, by malicious mail attachments, and sometimes it is offered for download as an installer for a game or other legitimate software.
Ransom.Crysis deletes restore points by running the vssadmin delete shadows /all /quiet command. So if these restore points were part of your backup plan they could be lost if the ransomware has been running.
Malwarebytes protects users from Ransom.Crysis by using real-time protection and by using Anti-Ransomware technology.
Malwarebytes can detect and remove Ransom.Crysis on business machines without further user interaction.
To remove Ransom.Crysis using Malwarebytes business products, follow the instructions below.
If you have infected machines that are not registered endpoints in Malwarebytes Endpoint Protection, you can remove Ransom.Crysis with our Breach Remediation tool (MBBR).
You can use Malwarebytes Anti-Malware v1.80, which is included in your Malwarebytes Endpoint Security deployment to scan and remove Ransom.Crysis.
After removal it is imperative to find the source of infection to prevent it from being used again. If the ransomware has run briefly before being stopped by our behavioral detection methods, check for the presence of created Restore points and use our roll-back technology to recover any encrypted files.
Malwarebytes can detect and remove Ransom.Crysis without further user interaction.
Take note, however, that removing this ransomware does not decrypt your files. You can only get your files back from backups you made before the infection happened or when you are using roll-back technology.
Ransom.Crysis has been known to append these extensions for encrypted files:
.crysis, .dharma, wallet, .java, .adobe, .viper1, .write, .bip, .zzzzz, .viper2, .arrow, .gif, .xtbl, .onion, .bip, .cezar, .combo, .cesar, .cmb, .AUF, .arena, .brrr, .btc, .cobra, .gamma, .heets, .java, .monro, .USA, .bkp, .xwx, .btc, .best, .bgtx, .boost, .heets, .waifu, .qwe, .gamma, .ETH, .bet, ta, .air, .vanss, . 888, .FUNNY, .amber, .gdb, .frend, .like, .KARLS, .xxxxx, .aqva, .lock, .korea, .plomb, .tron, .NWA, .AUDIT, .com, .cccmn, .azero, .Bear, .bk666, .fire, .stun, .myjob, .ms13, .war, .carcn, .risk, .btix, .bkpx, .he, .ets, .santa, .gate, .bizer, .LOVE, .LDPR, .MERS, .bat, .qbix, .aa1, and .wal
The following ransom note names have been found:
• HOW TO DECRYPT YOUR DATA.txt
• Readme to restore your files.txt
• Decryption instructions.txt
• FILES ENCRYPTED.txt
• Files encrypted!!.txt
Some common file hashes: