Analysis

  • max time kernel
    119s
  • max time network
    119s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-11-2024 20:57

General

  • Target

    559a81754bfc13d6e7d1d30619ad486eda23a2c6c6899bf566ed7be9bc4d3af1N.exe

  • Size

    90KB

  • MD5

    f58ade729943deddc4be92babd36fda0

  • SHA1

    32540460c805523742ef6957169ce2f549cbbe99

  • SHA256

    559a81754bfc13d6e7d1d30619ad486eda23a2c6c6899bf566ed7be9bc4d3af1

  • SHA512

    64206722e1fb7a6198a7b6df3946c993a2d36195974a3210b2c65956243399ffc614889a66a2355276ed17f39b3bf6c80c792c18eee5173ec31f0451b81376cd

  • SSDEEP

    1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y

Malware Config

Signatures

  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • Modiloader family
  • ModiLoader Second Stage 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • UPX packed file 20 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\559a81754bfc13d6e7d1d30619ad486eda23a2c6c6899bf566ed7be9bc4d3af1N.exe
    "C:\Users\Admin\AppData\Local\Temp\559a81754bfc13d6e7d1d30619ad486eda23a2c6c6899bf566ed7be9bc4d3af1N.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4936
    • C:\Users\Admin\AppData\Local\Temp\559a81754bfc13d6e7d1d30619ad486eda23a2c6c6899bf566ed7be9bc4d3af1N.exe
      "C:\Users\Admin\AppData\Local\Temp\559a81754bfc13d6e7d1d30619ad486eda23a2c6c6899bf566ed7be9bc4d3af1N.exe"
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3884
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BRNYO.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3324
        • C:\Windows\SysWOW64\reg.exe
          REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Win Pdf" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe" /f
          4⤵
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          PID:3184
      • C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3552
        • C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:1072
        • C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:4268

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\BRNYO.txt

    Filesize

    145B

    MD5

    4eb61ec7816c34ec8c125acadc57ec1b

    SHA1

    b0015cc865c0bb1a027be663027d3829401a31cc

    SHA256

    08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

    SHA512

    f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

  • C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe

    Filesize

    90KB

    MD5

    5012784d8684fb13edc872249d61d320

    SHA1

    9ea9208c10c1b662f30e18819da893d141f8003b

    SHA256

    783fbc99acd4a2017b2c2abc9e845a376008e07a961004efa2ba8f9a0846fb7c

    SHA512

    437010005e2dccb25d107581f8b302a36d1cc8bcc5c9da431c4305e6a8bcd8173da79b48e4243a35fe4bf2768d0741b12eba4d8bda073fd80c6360a684d962bd

  • memory/1072-61-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3552-57-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/3552-41-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/3552-40-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/3552-35-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/3884-39-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3884-12-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3884-60-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3884-9-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3884-7-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3884-58-0x0000000000410000-0x00000000004D9000-memory.dmp

    Filesize

    804KB

  • memory/4268-52-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4268-45-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4268-50-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4268-55-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4268-54-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4268-62-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4936-5-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/4936-4-0x0000000002320000-0x0000000002322000-memory.dmp

    Filesize

    8KB

  • memory/4936-6-0x0000000002A90000-0x0000000002A92000-memory.dmp

    Filesize

    8KB

  • memory/4936-0-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/4936-11-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/4936-3-0x0000000002310000-0x0000000002312000-memory.dmp

    Filesize

    8KB