Ransomware Research

MicroCop Ransomware

MicroCop is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2016, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: MirCop, Crypt888, MicroCop NextGen.

Quick Facts

Ransomware Family
MicroCop
First Seen
June 1, 2016
Known Aliases
MirCopCrypt888MicroCop NextGen

How MicroCop Ransomware Works

File Encryption Patterns

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

File extensions added after encryption:

..bhacks

Prefixes added to encrypted files:

Lock.

Ransom Note and Payment Demands

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

file200 dollars.txt

Ransom message:

notes/200 dollars.txt

Note locations:

Temp
fileREADME.txt

Ransom message:

notes/README.txt

Note locations:

Desktop
screenshot

Ransom message:

notes/wl.jpg

Note locations:

Desktop

Technical Indicators

Associated Executable Files

The following executable files are associated with MicroCop ransomware:

  • 05_putty.exe_
  • mircop.exe.dontrun
  • putty.exe
  • customs แบบฟอร์มกรมศุลกากร.doc
  • y.exe
  • 50eae30fd5bd7a0fbbaf64892bdda0bc_HsZGqoEWFIrVrQxS.exE
  • x.exe
  • c.exe
  • 05daaa17505f3d97_aut5AE1.tmp
  • tesu
  • aut1.tmp
  • ClickMe.exe
  • CRYPT888 RASOMWARE NEW VERSION.BIN
  • stub.exe
  • alien ransomware builder cracked free.exe
  • Document.pdf.exe
  • myfile.exe
  • Angry Lola Loud Ran$omware.exe
  • KWFLPC.bin

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About This Analysis

This MicroCop 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 MicroCop.

Last updated: October 30, 2025

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