General

  • Target

    MBSetup.exe

  • Size

    2.5MB

  • Sample

    240703-h7sf5asfrc

  • MD5

    b6d8b7e6f74196f62caba2ca77a7ae91

  • SHA1

    6ac9c99f084b5772440e2f135b8d5365f7f45314

  • SHA256

    74b0bf9c17091ab1c6c61af0aefbc599f1ecc0fff6dee0144a3dfd5cd1f5e18f

  • SHA512

    ad58bc7b626a13606e3f44df7188b2420e0f31ecb55632eac4b6a05dc1574f1ec1b0ef6b52e11832713c6f8f91c807fe3a815699d0748284993ecc54f2823044

  • SSDEEP

    49152:/5wZat2ranBQjvaq/Gtl8StQyfvE0Z3R0nxiIq2ddBzOnX:/5wZauUBQjvL0SKtQRq2cnX

Malware Config

Targets

    • Target

      MBSetup.exe

    • Size

      2.5MB

    • MD5

      b6d8b7e6f74196f62caba2ca77a7ae91

    • SHA1

      6ac9c99f084b5772440e2f135b8d5365f7f45314

    • SHA256

      74b0bf9c17091ab1c6c61af0aefbc599f1ecc0fff6dee0144a3dfd5cd1f5e18f

    • SHA512

      ad58bc7b626a13606e3f44df7188b2420e0f31ecb55632eac4b6a05dc1574f1ec1b0ef6b52e11832713c6f8f91c807fe3a815699d0748284993ecc54f2823044

    • SSDEEP

      49152:/5wZat2ranBQjvaq/Gtl8StQyfvE0Z3R0nxiIq2ddBzOnX:/5wZauUBQjvL0SKtQRq2cnX

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • 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.

    • Impair Defenses: Safe Mode Boot

    • Reads user/profile data of web browsers

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

    • Downloads MZ/PE file

    • Enumerates connected drives

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

    • 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

MITRE ATT&CK Enterprise v15

Tasks