Ransomware Research

Nhtnwcuf Ransomware

Nhtnwcuf is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2017, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
Nhtnwcuf
First Seen
March 1, 2017

How Nhtnwcuf ransomware works

File modification behavior

How Nhtnwcuf alters file modification timestamps is not known.

File encryption patterns

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

Extensions added after encryption
  • ./\.[a-z]{3}$/

Ransom note and payment demands

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

file!_RECOVERY_HELP_!.txt
notes/!_RECOVERY_HELP_!.txt
fileHELP_ME_PLEASE.txt
notes/!_RECOVERY_HELP_!.txt

About this analysis

This Nhtnwcuf 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 Nhtnwcuf.

Last updated: April 13, 2023

Detection coverage

Elastio detects Nhtnwcuf inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Nhtnwcuf 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.