Ransomware Research

About BKRansomware


BKRansomware was first discovered in May 2018 in enterprise cloud environments. BKRansomware is found in environments with a number of different names, including BK, etc. For a full list of all names, please see below.

Name BKRansomware
  • BK
First Seen May 2018

Behavior of BKRansomware

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

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

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Characteristics of BKRansomware

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


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 BKRansomware 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 BKRansomware.



These are the names of the executables that contain the undetonated ransomware payload for BKRansomware.

How Elastio can help

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Elastio is a cloud-native data resilience platform on AWS, providing robust security and assuring the recoverability of critical data in cloud environments.

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