File extensions remain the same.
By that, do you mean the file extensions were not changed...no obvious file extensions appended?
What "read me" are you talking about?
That would be the name of the ransom note. It could be called "Read Me" or something else depending on the ransomware.
There are several ransomware infections that do not append an obvious extension
to the end of encrypted filenames or add a known file pattern which helps to identify it...some ransomware will add a unique hex pattern identifier in the header of every encrypted file so the ransomware can identify the file as one it encrypted. The best way to identify the different ransomwares that do not append an extension is the ransom note (including it's name), the malware file itself or at least information related to the email address used by the cyber-criminals to request payment. Without any of that other information it is difficult to determine what you are dealing with.
You can submit samples of encrypted files and ransom notes to ID Ransomware
for assistance with identification
. This is a service that helps identify what ransomware may have encrypted your files and then attempts to direct you to an appropriate support topic where you can seek further assistance. Uploading both
encrypted files and ransom notes together provides a more positive match and helps to avoid false detections.
If you can find the malicious executable that you suspect was involved in causing the infection, it can be submitted here
) with a link to this topic. There is a "Link to topic where this file was requested
" box under the Browse... button. Doing that will be helpful with analyzing and investigating by our crypto malware experts.
Based on infection rates and statistics, the two most common ransomware variants that do not change the extension or use a filemarker are PClock and Spora.