Ransomware Research

Maktub Ransomware

Maktub 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
Maktub
First Seen
March 1, 2016

How Maktub Ransomware Works

File Encryption Patterns

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

File extensions added after encryption:

./\.[a-z]{4,6}\b/

Ransom Note and Payment Demands

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

file/^_DECRYPT_INFO_[a-z]{4,6}\.html\b/

Ransom message:

notes/_DECRYPT_INFO_atjdoh.html

Note locations:

EveryFolder

Technical Indicators

Associated Executable Files

The following executable files are associated with Maktub ransomware:

  • Tandberg Constellations.exe
  • tim_lassiter_20160321_tos.scr
  • C.dll
  • ChartFewer.exe
  • sandra_mclamb.scr
  • invoice-03-21-2017-ENC197472.scr
  • invoice-03-21-2017-EZU280432-update.scr
  • SafariBacktrack
  • ai_downloaded_temp_file_bkdlwkzw.exe
  • ai_downloaded_temp_file_0dnx2hy9.exe
  • ai_downloaded_temp_file_ru1dvajz.exe
  • ai_downloaded_temp_file_nhxawree.exe
  • ai_downloaded_temp_file_t78tuotk.exe
  • ai_downloaded_temp_file_wh8njtyg.exe
  • ai_downloaded_temp_file_vytpokag.exe
  • ai_downloaded_temp_file_dhmpsomh.exe
  • ai_downloaded_temp_file_iiylvqip.exe
  • TOS-update-2016-Marth-18.scr

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About This Analysis

This Maktub 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 Maktub.

Last updated: July 30, 2025

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