When you discover that your computer is infected with ransomware, one of the first things we advise is to create a copy or image of the entire hard drive. Doing that allows you to save the complete state of your system (and all encrypted data) in the event that a free decryption solution is developed in the future.
Imaging the drive backs up everything related to the infection including encrypted files, ransom notes, key data files (if applicable) and registry entries containing possible information which may be needed if a solution is ever discovered. The encrypted files and ransom note text files do not contain malicious code so they are safe. Even if a decryption tool is available, there is no guarantee it will work properly or that the malware developer will not release a new variant to defeat the efforts of security researchers so keeping a backup of the original encrypted files and related information is a good practice.
You should submit (upload) samples of encrypted files, ransom notes and any contact email addresses or hyperlinks provided by the cyber-criminals to
ID Ransomware for assistance with identification and confirmation. This is a service that helps identify what ransomware may have encrypted your files, whether it is decryptable and then attempts to direct you to an appropriate support topic where you can seek further assistance. Uploading both encrypted files, ransom notes and any contact email addresses or hyperlinks provided by the cyber-criminals together provides a more positive match and helps to avoid false detections. Any email addresses or hyperlinks provided by the criminals may also be helpful with identification.
Most crypto malware ransomware is typically programmed to automatically remove itself...the malicious files responsible for the infection...after the encrypting is done since they are no longer needed. That explains why many security scanners do not find anything after the fact. The encrypted files do not contain malicious code so they are safe. Unfortunately, most victims do not realize they have been infected until the ransomware displays the ransom note and the files have already been encrypted. In some cases there may be no ransom note and discovery only occurs at a later time when attempting to open an encrypted file. As such, they don't know how long the malware was on the system before being alerted or if other malware was downloaded and installed along with the ransomware. If other malware was involved it could still be present so be sure to perform full scans with your anti-virus.
If your antivirus did not detect and remove anything, additional scans should be performed with other security programs like Emsisoft Anti-Malware, Malwarebytes 3.0, Zemana AntiMalware, RogueKiller Anti-malware and HitmanPro. You can also supplement your anti-virus or get a second opinion by performing an Online Virus Scan.
Important: Keep in mind that when dealing with ransomware it is best to quarantine malicious files rather than delete them until you know what infection you're dealing with. In some cases, samples of the malicious files are needed for further analysis in order to identify it properly or create decryption tools.
If you need individual assistance only with removing the malware infection, follow the instructions in the Malware Removal and Log Section Preparation Guide...all other questions or comments should be posted in the support topics. When you have done that, start a new topic and post your logs in the Virus, Trojan, Spyware, and Malware Removal Logs forum, NOT here, for assistance by the Malware Response Team. If HelpBot replies to your topic, please follow Step One and CLICK the link so it will report your topic to the team members.