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Ransomware Research

BlackHeart138

BlackHeart138 was first discovered in February 2025 in enterprise cloud environments.

Name

BlackHeart138

 

First Seen

February 2025

Targeting

Behavior of BlackHeart138

BlackHeart138 is known to target specific file types. Below are all known file types that BlackHeart138 is known to infect.

In some cases, ransomware will update the modified date, when it encrypts files. BlackHeart138 updates the last modified date of the file it targets.

Details

Characteristics of BlackHeart138

Suffixes

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 BlackHeart138 ransomware is known to change.

Suffixes

.blackheart138

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 BlackHeart138.

Type

File Name

Location

file

read_this_to_decrypt_files.html

EveryFolder

Executables

These are the names of the executables that contain the undetonated ransomware payload for BlackHeart138.

Executables

bh138.exe

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 BlackHeart138.

External Pages

  • mailto:support1@contonta.com
  • mailto:support2@cavopo.com

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