Analysis

  • max time kernel
    14s
  • max time network
    17s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-06-2024 18:17

General

  • Target

    Loader.exe

  • Size

    16.6MB

  • MD5

    b352be3778029a883d12879b28cb9983

  • SHA1

    5af8c96e4f429c81c20f62b9e208384a04b397f7

  • SHA256

    29e1a7d0ae4f700212bd0395e9fb511af08fbef9c1bf35aa9e77c6f2ab931b14

  • SHA512

    42851f8cd0763f10b68003b26e639ef625d037b18aa0d4e7b99f6e0977385d7addb6eab945a12d22fa8d3277084480137550273543d382b4fc35c60fa3853a81

  • SSDEEP

    393216:8GmAWaHdqVlohjmp+Sub6a9cQ4uTQnjeaijvP:ADAdulqO5I9TlvP

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Creates new service(s) 2 TTPs
  • Drops file in Drivers directory 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Themida packer 6 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Drops file in System32 directory 6 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Windows directory 4 IoCs
  • Launches sc.exe 4 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 32 IoCs
  • Suspicious behavior: LoadsDriver 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Loader.exe
    "C:\Users\Admin\AppData\Local\Temp\Loader.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Drops file in Drivers directory
    • Checks BIOS information in registry
    • Checks computer location settings
    • Checks whether UAC is enabled
    • Drops file in System32 directory
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3944
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C sc create windowsproc type=kernel binpath=C:\Windows\System32\drivers\winhb.sys
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3336
      • C:\Windows\system32\sc.exe
        sc create windowsproc type=kernel binpath=C:\Windows\System32\drivers\winhb.sys
        3⤵
        • Launches sc.exe
        PID:1496
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C sc start windowsproc
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1752
      • C:\Windows\system32\sc.exe
        sc start windowsproc
        3⤵
        • Launches sc.exe
        PID:2736
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C sc create windowsproc type=kernel binpath=C:\Windows\System32\drivers\winhb.sys
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4452
      • C:\Windows\system32\sc.exe
        sc create windowsproc type=kernel binpath=C:\Windows\System32\drivers\winhb.sys
        3⤵
        • Launches sc.exe
        PID:2080
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C sc start windowsproc
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1664
      • C:\Windows\system32\sc.exe
        sc start windowsproc
        3⤵
        • Launches sc.exe
        PID:432
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\Loader.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1504
      • C:\Windows\system32\certutil.exe
        certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\Loader.exe" MD5
        3⤵
          PID:2204
        • C:\Windows\system32\find.exe
          find /i /v "md5"
          3⤵
            PID:400
          • C:\Windows\system32\find.exe
            find /i /v "certutil"
            3⤵
              PID:4492
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c cls
            2⤵
              PID:3236
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /c cls
              2⤵
                PID:3592

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • memory/3944-0-0x0000000140000000-0x00000001425AE000-memory.dmp
              Filesize

              37.7MB

            • memory/3944-1-0x0000000140000000-0x00000001425AE000-memory.dmp
              Filesize

              37.7MB

            • memory/3944-2-0x0000000140000000-0x00000001425AE000-memory.dmp
              Filesize

              37.7MB

            • memory/3944-3-0x0000000140000000-0x00000001425AE000-memory.dmp
              Filesize

              37.7MB

            • memory/3944-4-0x00007FF906B10000-0x00007FF906B12000-memory.dmp
              Filesize

              8KB

            • memory/3944-15-0x0000000140000000-0x00000001425AE000-memory.dmp
              Filesize

              37.7MB

            • memory/3944-16-0x0000000140000000-0x00000001425AE000-memory.dmp
              Filesize

              37.7MB