General

  • Target

    Bootstrapper.exe

  • Size

    793KB

  • Sample

    240726-wq65vavgqp

  • MD5

    d674b62b359b2ec81398348904f8bee9

  • SHA1

    609d29c3d5503bc382ab55188e67e002eb8270a7

  • SHA256

    95486d06db5126eb557c563b5597e08b236634f75853a6491c485cb64cf28ae2

  • SHA512

    a4fe0e357e5c44ebdf87fa0273266d35ff181e4ee5c041708f44b09f5225f5841b8cb677eda903b2869fa4a86d0b39ff7b371949928bb0a1cc4cbb008f978cad

  • SSDEEP

    12288:d63MnScwI8yPExQwa05tOocHFj6rftMH6n6rmP2vCSpm5r8d:MNcRPPEftOocHFj6JMHOdy

Malware Config

Targets

    • Target

      Bootstrapper.exe

    • Size

      793KB

    • MD5

      d674b62b359b2ec81398348904f8bee9

    • SHA1

      609d29c3d5503bc382ab55188e67e002eb8270a7

    • SHA256

      95486d06db5126eb557c563b5597e08b236634f75853a6491c485cb64cf28ae2

    • SHA512

      a4fe0e357e5c44ebdf87fa0273266d35ff181e4ee5c041708f44b09f5225f5841b8cb677eda903b2869fa4a86d0b39ff7b371949928bb0a1cc4cbb008f978cad

    • SSDEEP

      12288:d63MnScwI8yPExQwa05tOocHFj6rftMH6n6rmP2vCSpm5r8d:MNcRPPEftOocHFj6JMHOdy

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Checks BIOS information in registry

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Blocklisted process makes network request

    • Checks whether UAC is enabled

    • Enumerates connected drives

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

    • Legitimate hosting services abused for malware hosting/C2

    • Network Share Discovery

      Attempt to gather information on host network.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks