Ransomware Research

Dangerous Ransomware

Dangerous 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
Dangerous
First Seen
March 1, 2017

How Dangerous ransomware works

File modification behavior

Dangerous updates file modification timestamps after encryption.

File encryption patterns

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

Extensions added after encryption
  • .troll

Ransom note and payment demands

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

filetroll.txt
notes/troll.txt

Location: UserProfile

Technical indicators

Associated executable files

The following executable files are associated with Dangerous ransomware:

  • DANGEROUS_RANSOMW.exe

About this analysis

This Dangerous 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 Dangerous.

Last updated: March 14, 2023

Detection coverage

Elastio detects Dangerous inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Dangerous 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.