Ransomware Research

About BlackCat

BlackCat

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

Name BlackCat
AKA
  • ALPHV
  • ALPHV-ng
  • Noberus
First Seen November 2021
Targeting

Behavior of BlackCat

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

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

Learn More

Characteristics of BlackCat

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

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 BlackCat ransomware is known to change.

Suffixes/.[a-z]{7}/

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 BlackCat.

Typefile
File Name/RECOVER-[a-z]{7}-FILES.txt/
LocationEveryFolder

Executables

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

Executablesalpha.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 BlackCat.

External Pages
  • http://zujgzbu5y64xbmvc42addp4lxkoosb4tslf5mehnh7pvqjpwxn5gokyd.onion
  • http://mu75ltv3lxd24dbyu6gtvmnwybecigs5auki7fces437xvvflzva2nqd.onion
How Elastio can help

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