Ransomware Research

Monkey Ransomware

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

Quick facts

Ransomware Family
Monkey
First Seen
October 1, 2025

How Monkey ransomware works

File modification behavior

Monkey updates file modification timestamps after encryption.

File encryption patterns

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

Extensions added after encryption
  • .monkey

Ransom note and payment demands

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

fileHow_To_Recovery.txt
notes/How_To_Recovery.txt

Location: EveryFolder

Technical indicators

Associated executable files

The following executable files are associated with Monkey ransomware:

  • fugqf.exe
  • MonkeyRansomware.exe

About this analysis

This Monkey 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 Monkey.

Last updated: November 5, 2025

Detection coverage

Elastio detects Monkey inside your data and backups.

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