Ransomware Research

CryptFIle2 Ransomware

CryptFIle2 is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2016, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
CryptFIle2
First Seen
March 1, 2016

How CryptFIle2 Ransomware Works

File Encryption Patterns

CryptFIle2 modifies encrypted files using specific patterns to mark them as encrypted:

File extensions added after encryption:

..scl..rscl..rmd

Ransom Note and Payment Demands

After encrypting files, CryptFIle2 displays ransom notes demanding payment for file recovery:

fileHELP_DECRYPT_YOUR_FILES.HTML

Ransom message:

notes/HELP_DECRYPT_YOUR_FILES.HTML

Note locations:

EveryFolder
fileHELP_DECRYPT_YOUR_FILES.TXT

Ransom message:

notes/HELP_DECRYPT_YOUR_FILES.TXT

Note locations:

EveryFolder
file# HELP_DECRYPT_YOUR_FILES #.TXT

Ransom message:

notes/# HELP_DECRYPT_YOUR_FILES #.TXT

Note locations:

EveryFolder
fileHELP_YOUR_FILES.HTML

Ransom message:

notes/HELP_YOUR_FILES.HTML

Note locations:

EveryFolder
fileHELP_YOUR_FILES.TXT

Ransom message:

notes/HELP_YOUR_FILES.TXT

Note locations:

EveryFolder

Technical Indicators

Associated Executable Files

The following executable files are associated with CryptFIle2 ransomware:

  • ChromeFlashPlayer_81ba016a5dfcb0db.exe
  • Subpoena.exe
  • AdobeFlashPlayer_dcf6d65e5dfcb0db.exe
  • AdobeFlashPlayer_8428d05f5dfcb0db.exe
  • FlashPlayerPlugin_5dfcb0db_d36f4e1e.exe
  • FlashPlayerPlugin_ebcf2f2_f8d21cc4.exe
  • adb.exe

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About This Analysis

This CryptFIle2 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 CryptFIle2.

Last updated: October 30, 2025

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