Ransomware Research

EvilNominatus Ransomware

EvilNominatus is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2021, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: EvilNominatusCrypto, RozbehCrypt, EvilCrypt, RozbehRevenge.

Quick Facts

Ransomware Family
EvilNominatus
First Seen
December 1, 2021
Known Aliases
EvilNominatusCryptoRozbehCryptEvilCryptRozbehRevenge

How EvilNominatus Ransomware Works

File Encryption Patterns

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

File extensions added after encryption:

.-Locked

Ransom Note and Payment Demands

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

message

Ransom message:

notes/message.txt

Note locations:

OnceOnCompletion
fileNominatusRansomware2Message.txt

Ransom message:

notes/NominatusRansomware2Message.txt

Note locations:

Desktop

Technical Indicators

Associated Executable Files

The following executable files are associated with EvilNominatus ransomware:

  • EvilNominatus.exe
  • EvilNominatusCrypto.exe
  • Ransom.Nominatus Strikes.exe
  • TrojanDropper.NominatusStrike.exe
  • antivirusscan.exe
  • AntivirusScan.exe
  • FreeNet.exe
  • Ransom.EvilNominatus.DiscordTricks.exe
  • RozbehRevenge.exe
  • Quax0r.exe
  • WindowsScan.exe
  • Triclyde.exe
  • RozbehOfSatan.exe
  • Triclyde.exe (WindowsScan.exe)

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About This Analysis

This EvilNominatus 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 EvilNominatus.

Last updated: October 30, 2025

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