Ransomware Research

About BlueLocker


BlueLocker was first discovered in November 2021 in enterprise cloud environments. BlueLocker is found in environments with a number of different names, including BlueCryptor, etc. For a full list of all names, please see below.

Name BlueLocker
  • BlueCryptor
First Seen November 2021

Behavior of BlueLocker

BlueLocker is known to target specific file types. Below are all known file types that BlueLocker is known to infect.

In some cases, ransomware will update the modified date, when it encrypts files. BlueLocker updates the last modified date of the file it targets.

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Characteristics of BlueLocker

Here are some of the unique characteristics that are helpful to know about BlueLocker.


Some ransomware will change or append a suffix to the end of the file after they are encrypted, including changing the extension of a file. Here are some of the possible suffixes that BlueLocker ransomware is known to change.


Ransomware Notes

Not all ransomware leaves a note. However, some ransomware leaves the infected party instructions on what the user should do to get rid of the ransomware, or satisfy the ransom. This often involves transferring money, often bitcoin or another cryptocurrency to a designated wallet.

Below are the type(s) of notes, content, and typical locations where Elastio has found ransom notes from BlueLocker.

File Namerestore_file.txt

External Pages

Ransomware often links to external pages such as payment pages, telegram contacts, etc. Below are some of the URLs Elastio has found to be associated with BlueLocker.

External Pages
  • mailto:grepmord@protonmail.com
How Elastio can help

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Elastio protects data from ransomware and malware evading perimeter defenses and mitigates downtime, data loss, and reputational harm for businesses.