General

  • Target

    Steam.exe

  • Size

    18.7MB

  • Sample

    240906-tkcb6svgpk

  • MD5

    c23b73efc9da2aa3c3444ae35918564a

  • SHA1

    39779ec4720eef4028c5a37d4602b89b5897f7da

  • SHA256

    1769fae72163ec0fe5227c6437a1bbda92c25a61ed3cca06578fb287a1713328

  • SHA512

    1dbae3172810142e0b4051cbcbd7807af8dd3f17821f1bfeb1ddd7fca93fdddddf27656ad7f9ca785dc13d170b46fc029bf58a30ded19712dbe48d03e3f153d9

  • SSDEEP

    393216:oS0SUmxLJ3MAuYDzE7TJToVLEZf0j1BwCB7Sc2mSR7d/AtBy1P:P0SUEcfEqlEVMf8B6m87d/AtBy1P

Malware Config

Targets

    • Target

      Steam.exe

    • Size

      18.7MB

    • MD5

      c23b73efc9da2aa3c3444ae35918564a

    • SHA1

      39779ec4720eef4028c5a37d4602b89b5897f7da

    • SHA256

      1769fae72163ec0fe5227c6437a1bbda92c25a61ed3cca06578fb287a1713328

    • SHA512

      1dbae3172810142e0b4051cbcbd7807af8dd3f17821f1bfeb1ddd7fca93fdddddf27656ad7f9ca785dc13d170b46fc029bf58a30ded19712dbe48d03e3f153d9

    • SSDEEP

      393216:oS0SUmxLJ3MAuYDzE7TJToVLEZf0j1BwCB7Sc2mSR7d/AtBy1P:P0SUEcfEqlEVMf8B6m87d/AtBy1P

    • 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.

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks whether UAC is enabled

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks