Ransomware Research

AllCry Ransomware

AllCry is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on October 1, 2017, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
AllCry
First Seen
October 1, 2017

How AllCry Ransomware Works

File Encryption Patterns

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

File extensions added after encryption:

..allcry

Ransom Note and Payment Demands

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

fileReadMe.dic

Ransom message:

notes/ReadMe.dic

Note locations:

RootDirectory
filereadme.txt

Ransom message:

notes/readme.txt

Note locations:

Desktop
message

Ransom message:

notes/note.txt

Note locations:

OnceOnCompletion

Technical Indicators

Associated Executable Files

The following executable files are associated with AllCry ransomware:

  • allcry_upx.exe
  • winsrv.exe
  • winsrv32.exe

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About This Analysis

This AllCry 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 AllCry.

Last updated: July 30, 2025

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