General

  • Target

    3a48bb3fcdd6733462d837d755c7f09f90399d57364bae905f130009112a8945

  • Size

    684.8MB

  • Sample

    241221-tzwdlasqgv

  • MD5

    cffbeaff6728b94b1157790a0da8c0e0

  • SHA1

    f739e01d798ee1f1c8802daf661fe22a2dc6cb85

  • SHA256

    3a48bb3fcdd6733462d837d755c7f09f90399d57364bae905f130009112a8945

  • SHA512

    afdcc11c9fff4cca1d14d326d4728b3032617b62c2b9ad788b2e78383831cc0240ce0bf428b43e17ef0cb222ccacc99f58ab8b1e9c77804bcaf9bc0033375b76

  • SSDEEP

    98304:G9J/BDT4RZr3mc9UUxFKzxx+SjEnodrlW3hvIroVj0Rdfay6cysWtrW4L:e/9Y3n9UiFe+SWodrlW3HVURp7Wtas

Malware Config

Extracted

Family

systembc

C2

178.20.44.196:4127

192.168.1.149:4127

Targets

    • Target

      3a48bb3fcdd6733462d837d755c7f09f90399d57364bae905f130009112a8945

    • Size

      684.8MB

    • MD5

      cffbeaff6728b94b1157790a0da8c0e0

    • SHA1

      f739e01d798ee1f1c8802daf661fe22a2dc6cb85

    • SHA256

      3a48bb3fcdd6733462d837d755c7f09f90399d57364bae905f130009112a8945

    • SHA512

      afdcc11c9fff4cca1d14d326d4728b3032617b62c2b9ad788b2e78383831cc0240ce0bf428b43e17ef0cb222ccacc99f58ab8b1e9c77804bcaf9bc0033375b76

    • SSDEEP

      98304:G9J/BDT4RZr3mc9UUxFKzxx+SjEnodrlW3hvIroVj0Rdfay6cysWtrW4L:e/9Y3n9UiFe+SWodrlW3HVURp7Wtas

    • SystemBC

      SystemBC is a proxy and remote administration tool first seen in 2019.

    • Systembc family

    • 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.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks