Resubmissions

24/08/2026, 16:07

260824-tk2baseb4910

24/08/2026, 16:04

260824-thygmawvhy10

General

  • Target
    marubiru-bekkan.com_ransome.exe
  • Size 39KB
  • Sample260824-tk2baseb49
  • SHA256 1a9b086bdfdd5cca9b7d08aeb982ae604e57003a8cdd4adad4111980fc2a5665
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • nanocore

Attributes
  • c2_port

    22401

Targets

    • Target
      marubiru-bekkan.com_ransome.exe
    • Size 39KB
    • SHA256 1a9b086bdfdd5cca9b7d08aeb982ae604e57003a8cdd4adad4111980fc2a5665
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Family: NanoCore

      NanoCore is a remote access tool (RAT) with a variety of capabilities.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Grants admin privileges

      Uses net.exe to modify the user's privileges.

    • Disables one or more Microsoft Defender components

      Uses the Powershell Set-MpPreference cmdlet to disable one or more Microsoft Defender components.

    • Modifies Windows Firewall

    • Creates a file in the Startup directory

      A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

    • Stops running service(s)

    • Adds Run key to start application

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Creates a new local user account

      Uses net.exe to create a new local user account, often for persistence or a backdoor account.

MITRE ATT&CK Enterprise v16

Tasks