Ransomware Research

CryptoMix-XZZX

CryptoMix-XZZX was first discovered in November 2017 in enterprise cloud environments.

Name

CryptoMix-XZZX

 

First Seen

November 2017

Targeting

Behavior of CryptoMix-XZZX

CryptoMix-XZZX is known to target specific file types. Below are all known file types that CryptoMix-XZZX is known to infect.

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

Details

Characteristics of CryptoMix-XZZX

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 CryptoMix-XZZX ransomware is known to change.

Suffixes

.XZZX

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 CryptoMix-XZZX.

Type

File Name

Location

file

_HELP_INSTRUCTION.TXT

EveryFolder

Executables

These are the names of the executables that contain the undetonated ransomware payload for CryptoMix-XZZX.

Executables

BC5DFCB0DB.exe, EXPLORER.EXE, cm.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 CryptoMix-XZZX.

External Pages

  • mailto:xzzx@tuta.io
  • mailto:xzzx1@protonmail.com
  • mailto:xzzx10@yandex.com
  • mailto:xzzx101@yandex.com

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