Ransomware Research

BlackNevas Ransomware

BlackNevas is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on September 1, 2024, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Trial_recovery.

Quick facts

Ransomware Family
BlackNevas
First Seen
September 1, 2024
Known Aliases
  • Trial_recovery

How BlackNevas ransomware works

File modification behavior

BlackNevas updates file modification timestamps after encryption.

File encryption patterns

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

Extensions added after encryption
  • .-encrypted

Ransom note and payment demands

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

filehow_to_decrypt.txt
notes/how_to_decrypt.txt

Location: EveryFolder

filehow_to_decrypt.txt
notes/how_to_decrypt_v2.txt

Location: EveryFolder

Technical indicators

Associated executable files

The following executable files are associated with BlackNevas ransomware:

  • 0irbbvkw.exe

About this analysis

This BlackNevas 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 BlackNevas.

Last updated: August 27, 2026

Detection coverage

Elastio detects BlackNevas inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify BlackNevas 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.