General

  • Target

    MBSetup.exe

  • Size

    2.5MB

  • Sample

    240908-tpps3axgmd

  • MD5

    8611a0d47266ce8d473d540bd6534ffc

  • SHA1

    8804544c8ac023d89783d3d27b8c00b11dd8cbb4

  • SHA256

    a573205f27cd8a421e33322a41037ddf74d4f9cedc574c86dea6550a8f065143

  • SHA512

    8f4291ebb1b8cb5561b857d3ea2418c503f79b37b201f017d04a3c49746bfdc29abad5cfef3f2ce150fa8163824ac0a649a24386aee4562940d394f6514e4b7c

  • SSDEEP

    49152:OE8I6oEK7uzgRTvnFjStQyfvE0Z3R0nxiIq2dseYGfXH:OE8IjzuzgFt7KtQRq2VXH

Malware Config

Extracted

Path

C:\Users\Admin\Downloads\@[email protected]

Family

wannacry

Ransom Note
Q: What's wrong with my files? A: Ooops, your important files are encrypted. It means you will not be able to access them anymore until they are decrypted. If you follow our instructions, we guarantee that you can decrypt all your files quickly and safely! Let's start decrypting! Q: What do I do? A: First, you need to pay service fees for the decryption. Please send $300 worth of bitcoin to this bitcoin address: 12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw Next, please find an application file named "@[email protected]". It is the decrypt software. Run and follow the instructions! (You may need to disable your antivirus for a while.) Q: How can I trust? A: Don't worry about decryption. We will decrypt your files surely because nobody will trust us if we cheat users. * If you need our assistance, send a message by clicking <Contact Us> on the decryptor window. �
Wallets

12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw

Targets

    • Target

      MBSetup.exe

    • Size

      2.5MB

    • MD5

      8611a0d47266ce8d473d540bd6534ffc

    • SHA1

      8804544c8ac023d89783d3d27b8c00b11dd8cbb4

    • SHA256

      a573205f27cd8a421e33322a41037ddf74d4f9cedc574c86dea6550a8f065143

    • SHA512

      8f4291ebb1b8cb5561b857d3ea2418c503f79b37b201f017d04a3c49746bfdc29abad5cfef3f2ce150fa8163824ac0a649a24386aee4562940d394f6514e4b7c

    • SSDEEP

      49152:OE8I6oEK7uzgRTvnFjStQyfvE0Z3R0nxiIq2dseYGfXH:OE8IjzuzgFt7KtQRq2VXH

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Wannacry

      WannaCry is a ransomware cryptoworm.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Drops file in Drivers directory

    • Modifies RDP port number used by Windows

    • Sets service image path in registry

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

    • Drops startup file

    • Impair Defenses: Safe Mode Boot

    • Modifies file permissions

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Downloads MZ/PE file

    • Enumerates connected drives

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

    • File and Directory Permissions Modification: Windows File and Directory Permissions Modification

    • Legitimate hosting services abused for malware hosting/C2

    • Boot or Logon Autostart Execution: Authentication Package

      Suspicious Windows Authentication Registry Modification.

    • Checks computer location settings

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

    • Drops file in System32 directory

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Modifies WinLogon for persistence

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks