Ransomware Research

KillRansomware Ransomware

KillRansomware is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2025, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
KillRansomware
First Seen
June 1, 2025

How KillRansomware ransomware works

File encryption patterns

KillRansomware modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
.KillRansomware

Ransom note and payment demands

After encrypting files, KillRansomware displays ransom notes demanding payment for file recovery:

fileHow Recovery Files.txt
notes/How Recovery Files.txt
Location: EveryFolder

Technical indicators

Associated executable files

The following executable files are associated with KillRansomware ransomware:

About this analysis

This KillRansomware ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery, helping organizations defend against and recover from ransomware attacks like KillRansomware.

Last updated: December 30, 2025

Detection coverage

Elastio detects KillRansomware inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify KillRansomware across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a scan against your recovery points to confirm.

See How the Hunt Engine WorksRequest a Demo

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