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General

  • Target

    b8e3d7db3efaabe3.mp3

  • Size

    997KB

  • Sample

    240807-by9kqaxbmk

  • MD5

    4d83f388a1d3a0ff2ad5a66903a6b574

  • SHA1

    8fa598526e7dd0f09ee8366f1a97ba6ca396fc38

  • SHA256

    2ccc312eea80e6b3c6e55a6ffdd27685a993389f1de973b20e2612e01a15432b

  • SHA512

    1765ec75f25651be1dbcc3002afb5f2373c5ad219858ff1657c101b590f5f77ea7c45bb2a24130ed5e6ddf9f1b19ea7c6778a16e5d320a1152284cf73128e4c8

  • SSDEEP

    24576:pQr4vAZJuKawUEyxGqOYOuHz+sYlqx1XNn3xgqt+qC9:WrCqfUbxbfytQx1XF3NG

Malware Config

Targets

    • Target

      b8e3d7db3efaabe3.mp3

    • Size

      997KB

    • MD5

      4d83f388a1d3a0ff2ad5a66903a6b574

    • SHA1

      8fa598526e7dd0f09ee8366f1a97ba6ca396fc38

    • SHA256

      2ccc312eea80e6b3c6e55a6ffdd27685a993389f1de973b20e2612e01a15432b

    • SHA512

      1765ec75f25651be1dbcc3002afb5f2373c5ad219858ff1657c101b590f5f77ea7c45bb2a24130ed5e6ddf9f1b19ea7c6778a16e5d320a1152284cf73128e4c8

    • SSDEEP

      24576:pQr4vAZJuKawUEyxGqOYOuHz+sYlqx1XNn3xgqt+qC9:WrCqfUbxbfytQx1XF3NG

    • 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.

    • 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

    • Drops desktop.ini file(s)

    • 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.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks