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
Targeted Files
NOSAMPLE https://www.bleepingcomputer.com/forums/t/641267/nhtnwcuf-ransomware-support-topic-recovery-help-txt/ Replaces the content of the files with random data
File Encryption Patterns
Nhtnwcuf modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
./\.[a-z]{3}$/Ransom Note and Payment Demands
After encrypting files, Nhtnwcuf displays ransom notes demanding payment for file recovery:
!_RECOVERY_HELP_!.txtRansom message:
notes/!_RECOVERY_HELP_!.txt
HELP_ME_PLEASE.txtRansom message:
notes/!_RECOVERY_HELP_!.txt
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About This Analysis
This Nhtnwcuf ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery solutions, helping organizations defend against and recover from ransomware attacks like Nhtnwcuf.
Last updated: July 30, 2025