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Resubmissions

14/06/2024, 08:36

240614-kh3a5ssfng 9

14/06/2024, 08:33

240614-kgbrsswepp 9

14/06/2024, 08:32

240614-kflklswemk 3

General

  • Target

    SolaraBootstrapper.exe

  • Size

    798KB

  • Sample

    240614-kgbrsswepp

  • MD5

    baa81d6b98890ac06befe560d00be992

  • SHA1

    b69769c15af3ff85ca16a4ee579ea7fd959179e9

  • SHA256

    ec710ba066a78e3faf19b9d9a589ace5540a6a31551dc977b533e7d67352f87b

  • SHA512

    ded06cff210a201a53670ab55078c4edfcc0c4137af04b1ad3966b69464ec717957508b341d5f5fef485679bdd841017c420a14217d9480181a03fcd9aaad7f1

  • SSDEEP

    12288:PZZmz3HwnXFZ9RgoOojAojAbJaTGLLvlguxD:3mz3Hi9tOojAojAbdLL

Malware Config

Targets

    • Target

      SolaraBootstrapper.exe

    • Size

      798KB

    • MD5

      baa81d6b98890ac06befe560d00be992

    • SHA1

      b69769c15af3ff85ca16a4ee579ea7fd959179e9

    • SHA256

      ec710ba066a78e3faf19b9d9a589ace5540a6a31551dc977b533e7d67352f87b

    • SHA512

      ded06cff210a201a53670ab55078c4edfcc0c4137af04b1ad3966b69464ec717957508b341d5f5fef485679bdd841017c420a14217d9480181a03fcd9aaad7f1

    • SSDEEP

      12288:PZZmz3HwnXFZ9RgoOojAojAbJaTGLLvlguxD:3mz3Hi9tOojAojAbdLL

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

    • Downloads MZ/PE file

    • Checks BIOS information in registry

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

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Blocklisted process makes network request

    • 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

    • 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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks