General

  • Target

    InstallerDU__a591.exe

  • Size

    1.1MB

  • Sample

    230405-rhxh8afb66

  • MD5

    93aa40182be076b5789c7a84d1e220de

  • SHA1

    2fb5c002528e963d5a1bd62f4352ef046c689111

  • SHA256

    8bf19cc3b82146405600c66c581356b580f4a5bba6b9b97c11579b3c17321ce9

  • SHA512

    6b06d7ba43e12802bfbc170ffd6e4c80a4c0c9a58c1b374d45163c3d3fd4a23cfb92751e520cf213c2199e9aab62a48adb4834c7a24302d24f87ea133470b401

  • SSDEEP

    24576:AU5MGdL0sYGepOqv++Y8+5f3uT/tzXszW7+TyxXpY9BQ74aK+Qa0k:AU3LTYtpO0+Nv5feTqyuyrY9w9KtY

Malware Config

Targets

    • Target

      InstallerDU__a591.exe

    • Size

      1.1MB

    • MD5

      93aa40182be076b5789c7a84d1e220de

    • SHA1

      2fb5c002528e963d5a1bd62f4352ef046c689111

    • SHA256

      8bf19cc3b82146405600c66c581356b580f4a5bba6b9b97c11579b3c17321ce9

    • SHA512

      6b06d7ba43e12802bfbc170ffd6e4c80a4c0c9a58c1b374d45163c3d3fd4a23cfb92751e520cf213c2199e9aab62a48adb4834c7a24302d24f87ea133470b401

    • SSDEEP

      24576:AU5MGdL0sYGepOqv++Y8+5f3uT/tzXszW7+TyxXpY9BQ74aK+Qa0k:AU3LTYtpO0+Nv5feTqyuyrY9w9KtY

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

    • Downloads MZ/PE file

    • ACProtect 1.3x - 1.4x DLL software

      Detects file using ACProtect software.

    • Checks BIOS information in registry

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

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Loads dropped DLL

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • 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

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v6

Tasks