Ransomware Research
Deadly Ransomware
Deadly is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on October 1, 2016, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Deadly for a Good Purpose.
Quick Facts
- Ransomware Family
- Deadly
- First Seen
- October 1, 2016
- Known Aliases
- Deadly for a Good Purpose
How Deadly Ransomware Works
Targeted Files
filesencrypted.html file on the Desktop
File Encryption Patterns
Deadly modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..a858Ransom Note and Payment Demands
After encrypting files, Deadly displays ransom notes demanding payment for file recovery:
ransom.htmlNote locations:
Desktopransome.htmlRansom message:
notes/ransome.html
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with Deadly ransomware:
A858SEPJANBLEED.exeransomwarecore32x86.exescript_libraries_download.exeWindows Host Application.exe
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About This Analysis
This Deadly 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 Deadly.
Last updated: July 30, 2025