Ransomware Research

Resq100 Ransomware

Resq100 is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2023, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
Resq100
First Seen
June 1, 2023

How Resq100 ransomware works

File encryption patterns

Resq100 modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
.resq100

Ransom note and payment demands

After encrypting files, Resq100 displays ransom notes demanding payment for file recovery:

fileresq_Recovery.txt
notes/resq_Recovery.txt
Location: EveryFolder

Technical indicators

Associated executable files

The following executable files are associated with Resq100 ransomware:

About this analysis

This Resq100 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 Resq100.

Last updated: December 30, 2025

Detection coverage

Elastio detects Resq100 inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Resq100 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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What is Resq100 Ransomware? | Elastio