Overview

overview

10

Static

static

5

JokerRansom.bin.exe

windows7-x64

10

JokerRansom.bin.exe

windows10-2004-x64

10

Resubmissions

06/07/2026, 12:45

260706-pzenmaft7y10

31/08/2022, 17:53

220831-wgaqaahfcl10

Sharing

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General

  • Target
    JokerRansom.bin.exe
  • Size 1.3MB
  • Sample220831-wgaqaahfcl
  • SHA256 79ee8d39960b8bef040fa2311f0f57b33040c429c4b79ae643df07cd44726e1a
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
bootkitevasionpersistenceransomware

Malware Config

Extracted

Path

  • C:\Users\Admin\Desktop\JokerRansomReadMe.txt

Ransom Note
  • You became a victim of the JokerRansom Ransomware All your files are encrypted with a very Strong Algorithm Only way to get them back is to pay a price of 3 BTC (bitcoins) Do not reboot your Computer, or you will lose your data and Windows forever because the MBR Has Been Overwritten After payment you will receive a Decryption tool and a guide to fix your MBR

Targets

    • Target
      JokerRansom.bin.exe
    • Size 1.3MB
    • SHA256 79ee8d39960b8bef040fa2311f0f57b33040c429c4b79ae643df07cd44726e1a
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    bootkitevasionpersistenceransomware

    • Disables Task Manager via registry modification

      evasion

    • Disables cmd.exe use via registry modification

      evasion

    • Executes dropped EXE

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks