Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-06-2024 03:17

General

  • Target

    b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe

  • Size

    326KB

  • MD5

    8c1e120fb5b18346547d05a846718349

  • SHA1

    ed4e308f5b908cad5886cfb4a37c75fa61ca88e8

  • SHA256

    b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc

  • SHA512

    eaaf85b019b52f1190ac2b0e6fd80c82cae1f09882bca35d8d44b50b321371f36075beef370c62b4aeffcfe27681bb9cc4f4a27ae7d771fb9ae36f86a033f6a7

  • 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.

  • Detects Windows executables referencing non-Windows User-Agents 4 IoCs
  • ModiLoader Second Stage 4 IoCs
  • UPX dump on OEP (original entry point) 19 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 3 IoCs
  • UPX packed file 19 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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\b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe
    "C:\Users\Admin\AppData\Local\Temp\b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:640
    • C:\Users\Admin\AppData\Local\Temp\b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe
      "C:\Users\Admin\AppData\Local\Temp\b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe"
      2⤵
      • Checks computer location settings
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3248
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\VXJNS.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1768
        • 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
          PID:3268
      • C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:848
        • C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:3368
        • C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
          4⤵
          • Executes dropped EXE
          PID:2596

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\VXJNS.txt
    Filesize

    145B

    MD5

    4eb61ec7816c34ec8c125acadc57ec1b

    SHA1

    b0015cc865c0bb1a027be663027d3829401a31cc

    SHA256

    08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

    SHA512

    f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

    326KB

    MD5

    39af79c4a64e965201ff5be6d45cf20d

    SHA1

    4753c22a9ef8144a7e1e81d318373fdd1e3ccfd6

    SHA256

    d7ae89907a125cb9bb0c1db8ea0ab778a33d419fd290bdea1746a76033dc0d1c

    SHA512

    1187ebcd2f443d091e574513ff5ab3ef7b41d42ad372dd564a2473821a3a20462614b18e7563c64a9db9314409cb58407ac0689503212c2e2d1da9e3dfcc3655

  • memory/640-7-0x00000000021E0000-0x00000000021E2000-memory.dmp
    Filesize

    8KB

  • memory/640-3-0x00000000021C0000-0x00000000021C2000-memory.dmp
    Filesize

    8KB

  • memory/640-0-0x0000000000400000-0x0000000000454000-memory.dmp
    Filesize

    336KB

  • memory/640-13-0x0000000000400000-0x0000000000454000-memory.dmp
    Filesize

    336KB

  • memory/640-9-0x0000000002A50000-0x0000000002A52000-memory.dmp
    Filesize

    8KB

  • memory/640-8-0x00000000021F0000-0x00000000021F2000-memory.dmp
    Filesize

    8KB

  • memory/848-37-0x0000000000400000-0x0000000000454000-memory.dmp
    Filesize

    336KB

  • memory/848-41-0x0000000000400000-0x0000000000454000-memory.dmp
    Filesize

    336KB

  • memory/848-55-0x0000000000400000-0x0000000000454000-memory.dmp
    Filesize

    336KB

  • memory/848-40-0x0000000000400000-0x0000000000454000-memory.dmp
    Filesize

    336KB

  • memory/2596-56-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/2596-46-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/2596-51-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/2596-54-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/2596-57-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/2596-61-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/3248-4-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/3248-6-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/3248-10-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/3248-12-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/3248-58-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/3368-60-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB