Ransomware Research

Ziver

Ziver was first discovered in July 2025 in enterprise cloud environments.

Name

Ziver

 

First Seen

July 2025

Targeting

Behavior of Ziver

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

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

Details

Characteristics of Ziver

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 Ziver ransomware is known to change.

Suffixes

.ziver

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 Ziver.

Type

File Name

Location

file

+README-WARNING+.txt

EveryFolder

screenshot

Desktop

Executables

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

Executables

ziver_visual.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 Ziver.

External Pages

  • mailto:ziver25@outlook.com

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