Analysis

  • max time kernel
    148s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/11/2024, 04:34

General

  • Target

    c75cf40e4096631906608b9f237adeb488b6730d281af5bb3734a13a6603b698.exe

  • Size

    326KB

  • MD5

    c1009d109847889afc57cab8b5c247f8

  • SHA1

    2c55c51cbd43ee019ed4b0aa57d3be12a3fd23f9

  • SHA256

    c75cf40e4096631906608b9f237adeb488b6730d281af5bb3734a13a6603b698

  • SHA512

    7461a1c70f199a0e457d83cd4414abc87129cab8f04d2a7c32d5cd5a8235be8c2587f437c394c1cdfbbecfbe3f1f2c70ba292bb3a59f2428799cdbab290767f9

  • SSDEEP

    3072:ce2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38XV:csxD5cwohO+O1sVG0/pZ6iPC8

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\c75cf40e4096631906608b9f237adeb488b6730d281af5bb3734a13a6603b698.exe
    "C:\Users\Admin\AppData\Local\Temp\c75cf40e4096631906608b9f237adeb488b6730d281af5bb3734a13a6603b698.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1692
    • C:\Users\Admin\AppData\Local\Temp\c75cf40e4096631906608b9f237adeb488b6730d281af5bb3734a13a6603b698.exe
      "C:\Users\Admin\AppData\Local\Temp\c75cf40e4096631906608b9f237adeb488b6730d281af5bb3734a13a6603b698.exe"
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4708
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\WTCDO.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2768
        • 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:1900
      • 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:3964
        • 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:2376
        • 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:4352

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          145B

          MD5

          4eb61ec7816c34ec8c125acadc57ec1b

          SHA1

          b0015cc865c0bb1a027be663027d3829401a31cc

          SHA256

          08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

          SHA512

          f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

          Filesize

          326KB

          MD5

          f1deec4985b3c7161f4cc9e1f23bd61e

          SHA1

          de857dd142eb47bf4fdf4c1640d08aba2b74be74

          SHA256

          0e526fe483d53621940b6a647c76b445650dccda3286eaa2f647fb458edcba43

          SHA512

          c17c4fe6f6b3bfe121e2add24aaacc68abfc7b3c8db42aec08e260bc78c32eca3a918da384f0d19d5a9a2bf61c741a3942b48be4177319825f7a3474b788092a

        • memory/1692-13-0x0000000000400000-0x0000000000454000-memory.dmp

          Filesize

          336KB

        • memory/1692-7-0x0000000002330000-0x0000000002332000-memory.dmp

          Filesize

          8KB

        • memory/1692-6-0x0000000002320000-0x0000000002322000-memory.dmp

          Filesize

          8KB

        • memory/1692-5-0x0000000002310000-0x0000000002312000-memory.dmp

          Filesize

          8KB

        • memory/1692-0-0x0000000000400000-0x0000000000454000-memory.dmp

          Filesize

          336KB

        • memory/1692-4-0x0000000002300000-0x0000000002302000-memory.dmp

          Filesize

          8KB

        • memory/1692-3-0x0000000000400000-0x0000000000454000-memory.dmp

          Filesize

          336KB

        • memory/2376-62-0x0000000000400000-0x000000000040B000-memory.dmp

          Filesize

          44KB

        • memory/3964-59-0x0000000000400000-0x0000000000454000-memory.dmp

          Filesize

          336KB

        • memory/3964-42-0x0000000000400000-0x0000000000454000-memory.dmp

          Filesize

          336KB

        • memory/3964-36-0x0000000000400000-0x0000000000454000-memory.dmp

          Filesize

          336KB

        • memory/3964-43-0x0000000000400000-0x0000000000454000-memory.dmp

          Filesize

          336KB

        • memory/4352-57-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4352-53-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4352-52-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4352-56-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4352-55-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4352-63-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4708-40-0x0000000000400000-0x000000000040B000-memory.dmp

          Filesize

          44KB

        • memory/4708-12-0x0000000000400000-0x000000000040B000-memory.dmp

          Filesize

          44KB

        • memory/4708-10-0x0000000000400000-0x000000000040B000-memory.dmp

          Filesize

          44KB

        • memory/4708-60-0x0000000000400000-0x000000000040B000-memory.dmp

          Filesize

          44KB

        • memory/4708-8-0x0000000000400000-0x000000000040B000-memory.dmp

          Filesize

          44KB