General

  • Target
    CatalystInDev_0.1.zip
  • Size 14.4MB
  • Sample240601-3ck4sabb36
  • SHA256 d001c2b60e136d3805c2d86802158d3219d4f3952436e19191690d88fb39f638
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Targets

    • Target
      Catalyst.exe
    • Size 14.0MB
    • SHA256 b5e63f3bbfc75de4da25277b7a9fa0b650e8e2bc72c2af0087bd09698a9d098d
    • MD5 SHA1 SHA512 SSDEEP
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Sets file execution options in registry

    • Sets service image path in registry

    • Checks BIOS information in registry

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Registers COM server for autorun

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • Legitimate hosting services abused for malware hosting/C2

    • Checks system information in the registry

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

    • Detected potential entity reuse from brand microsoft.

    • Drops file in System32 directory

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks