Ransomware Research

Xorist-Frozen Ransomware

Xorist-Frozen is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2018, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
Xorist-Frozen
First Seen
March 1, 2018

How Xorist-Frozen Ransomware Works

Targeted Files

https://app.any.run/tasks/d2da63e6-1334-4ae4-a676-c9cb9a31b4c7/ Encrypts 1812 kb Skips 24 bytes header

File Encryption Patterns

Xorist-Frozen modifies encrypted files using specific patterns to mark them as encrypted:

File extensions added after encryption:

....Files-Frozen-NEED-TO-MAKE-PAYMENT-FOR-DECRYPTOR-OR-ALL-YOUR-FILES-WILL-BE-PERMANENLTY-DELETED..PAY_IN_MAXIM_24_HOURS_OR_ALL_YOUR_FILES_WILL_BE_PERMANENTLY_DELETED_PLEASE_BE_REZONABLE_you_have_only_1_single_chance_to_make_the_payment........PAY_IN_MAXIM_24_HOURS_OR_ALL_YOUR_FILES_WILL_BE_PERMANENTLY_DELETED_PLEASE_BE_REZONABLE_you_have_only_1_single_chance_to_make_the_payment.....PAY_IN_MAXIM_24_HOURS_OR_ALL_YOUR_FILES_WILL_BE_PERMANENTLY_DELETED_PLEASE_BE_REZONABLE_you_have_only_1_single_chance_YOU_NEED_TO_PURCHASE_THE_DECRYPTOR_FROM_US_FAST_AND_URGENT....DATA_IS_SAFE_YOU_NEED_TO_MAKE_THE_PAYMENT_IN_MAXIM_24_HOURS_OR_ALL_YOUR_FILES_WILL_BE_LOST_FOREVER_PLEASE_BE_REZONABLE_IS_NOT_A_JOKE_TIME_IS_LIMITED.....VeraCrypt_System_Error2019-You_need_to_make_payment_in_maxmin_24_hours_if_you_dont_the_decryptor_license_will_be_deleted_this_is_not_a_joke..system_damaged_payment_must_be_done_in_maxim_24_hours_or_your_encryption_key_will_be_deleted_forver

Ransom Note and Payment Demands

After encrypting files, Xorist-Frozen displays ransom notes demanding payment for file recovery:

fileHOW TO DECRYPT FILES.txt

Ransom message:

notes/HOW TO DECRYPT FILES.txt

Note locations:

EveryFolder

Technical Indicators

Associated Executable Files

The following executable files are associated with Xorist-Frozen ransomware:

  • Xorist-Frozen.exe
  • gacugefb.exe
  • 02130ye0T5GMhu3.exe
  • worker.bin
  • worker.ex_v
  • myfile.exe
  • 02130ye0t5gmhu3.exe
  • worker.exe
  • 02130ye0T5GMhu3.exe.3.dr
  • invoice.exe.1.dr
  • FOFiUm3GWkYAhYfBMi
  • 02130YE0T5GMHU3.EXE
  • 2018-05-08-Xorist-ransomware-message-popup.exe
  • yw9rFERMcLTp2PS.exe
  • x-patch-42311.exe
  • 2018-05-08-Ransomware. Xorist.exess
  • yw9rfermcltp2ps.exe
  • ransomware.exe
  • TempcNH67.eXe
  • decryptor.exe
  • 2018-05-08-scrypt-ransomware-message-popup.exe
  • xo.exe
  • work.exe

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About This Analysis

This Xorist-Frozen 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 Xorist-Frozen.

Last updated: July 30, 2025

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Xorist-Frozen Ransomware - Detectable by Elastio