Analysis

  • max time kernel
    146s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/01/2024, 10:33

General

  • Target
    82360730f84bbe5d42f252343b1dbc6c.exe
  • Size 917KB
  • Sample240130-mlkavafeap
  • SHA256 31b67352c4ea2611fe5624d87b0326d72215bd911c4be0aa695d8ea9a5d105a2
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • ModiLoader, DBatLoader

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

  • UAC bypass 3 TTPs 1 IoCs
  • ModiLoader Second Stage 19 IoCs
  • Disables RegEdit via registry modification 2 IoCs
  • Disables Task Manager via registry modification
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 6 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 1 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\82360730f84bbe5d42f252343b1dbc6c.exe
    "C:\Users\Admin\AppData\Local\Temp\82360730f84bbe5d42f252343b1dbc6c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3940
    • C:\Users\Admin\AppData\Local\Temp\82360730f84bbe5d42f252343b1dbc6c.exe
      "C:\Users\Admin\AppData\Local\Temp\82360730f84bbe5d42f252343b1dbc6c.exe"
      2⤵
      • Disables RegEdit via registry modification
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:880
      • C:\Users\Admin\AppData\Local\Temp\82360730f84bbe5d42f252343b1dbc6c.exe
        C:\Users\Admin\AppData\Local\Temp\82360730f84bbe5d42f252343b1dbc6c.exe
        3⤵
        • Checks computer location settings
        • Checks whether UAC is enabled
        • Drops file in Windows directory
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:368
        • C:\Windows\winlogon.exe
          "C:\Windows\winlogon.exe" \melt "C:\Users\Admin\AppData\Local\Temp\82360730f84bbe5d42f252343b1dbc6c.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3120
      • C:\Users\Admin\AppData\Local\Temp\82360730f84bbe5d42f252343b1dbc6c.exe
        C:\Users\Admin\AppData\Local\Temp\82360730f84bbe5d42f252343b1dbc6c.exe
        3⤵
        • Suspicious use of SetWindowsHookEx
        PID:3880
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\sil.bat
        3⤵
          PID:4892
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1808
    • C:\Windows\winlogon.exe
      \melt "C:\Users\Admin\AppData\Local\Temp\82360730f84bbe5d42f252343b1dbc6c.exe"
      1⤵
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1272
      • C:\Windows\winlogon.exe
        C:\Windows\winlogon.exe
        2⤵
        • UAC bypass
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Drops file in Windows directory
        • Suspicious use of AdjustPrivilegeToken
        • System policy modification
        PID:4868
      • C:\Windows\winlogon.exe
        C:\Windows\winlogon.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:5108
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\sil.bat
        2⤵
          PID:1928

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            sil.bat

            • Path C:\Users\Admin\AppData\Local\Temp\sil.bat
            • Size 374B
            • SHA256 0b5f3dc48730a04fe98a928c2cbd2b1b2547f64c86afd9c4024e01f44566365a
            • MD5 SHA1 SHA512

            sil.bat

            • Path C:\Users\Admin\AppData\Local\Temp\sil.bat
            • Size 234B
            • SHA256 91c8e0f27af93041b4738c40887be2a05ee94d04318f7abcad29c3209a09374e
            • MD5 SHA1 SHA512

            who.txt

            • Path C:\Users\Admin\AppData\Local\Temp\who.txt
            • Size 246B
            • SHA256 2f92e83823f5b63c0683d9ff2adc426662405bf5695f9512be36d78efe3ed0c6
            • MD5 SHA1 SHA512

            ntdtcstp.dll

            • Path C:\Windows\ntdtcstp.dll
            • Size 40KB
            • SHA256 003eb1ba56dc99c6a6d4e8f35233edcee64aa8001ac5f7289369cae2325ff019
            • MD5 SHA1 SHA512 SSDEEP

            winlogon.exe

            • Path C:\Windows\winlogon.exe
            • Size 187KB
            • SHA256 267ef5a22fce77569a3a032091502d99c5de9306b5095d5610541b219242f6e0
            • MD5 SHA1 SHA512 SSDEEP

            winlogon.exe

            • Path C:\Windows\winlogon.exe
            • Size 280KB
            • SHA256 f896a299e64876c4e09dff25897c8204d87f4d9a4f65ca2eacaea579f9b4f4dd
            • MD5 SHA1 SHA512 SSDEEP

            winlogon.exe

            • Path C:\Windows\winlogon.exe
            • Size 457KB
            • SHA256 5bc5aa713b1a6da3710a80a75c4ea7bb43c9e5143ae70d9cf2ff2d5558a788df
            • MD5 SHA1 SHA512 SSDEEP

            winlogon.exe

            • Path C:\Windows\winlogon.exe
            • Size 393KB
            • SHA256 95e4d16cd3e9d2e15e6da4ff793133d9f7735f2e5037e91925f121853d195f56
            • MD5 SHA1 SHA512 SSDEEP

            winlogon.exe

            • Path C:\Windows\winlogon.exe
            • Size 223KB
            • SHA256 92dca3164ad851a85aa973abe4dda97ee3fc989912209ead4a046d4ad2c68a9a
            • MD5 SHA1 SHA512 SSDEEP

            winlogon.exe

            • Path C:\Windows\winlogon.exe
            • Size 235KB
            • SHA256 7ab9435e099964c945bd102ebfc4ff6feb24a7281e50b3df7a425f9a079ec099
            • MD5 SHA1 SHA512 SSDEEP

            memory/368-28-0x0000000000400000-0x000000000044B000-memory.dmp

            memory/368-43-0x0000000000500000-0x0000000000501000-memory.dmp

            memory/368-24-0x0000000000400000-0x000000000044B000-memory.dmp

            memory/368-22-0x0000000000400000-0x000000000044B000-memory.dmp

            memory/368-29-0x0000000000400000-0x000000000044B000-memory.dmp

            memory/368-26-0x0000000000400000-0x000000000044B000-memory.dmp

            memory/368-25-0x0000000000400000-0x000000000044B000-memory.dmp

            memory/368-20-0x0000000000400000-0x000000000044B000-memory.dmp

            memory/368-19-0x0000000000400000-0x000000000044B000-memory.dmp

            memory/368-45-0x0000000000400000-0x000000000044B000-memory.dmp

            memory/880-13-0x0000000000400000-0x00000000004B7000-memory.dmp

            memory/880-61-0x0000000000400000-0x00000000004B7000-memory.dmp

            memory/880-11-0x0000000000400000-0x00000000004B7000-memory.dmp

            memory/1272-108-0x0000000000400000-0x00000000004B7000-memory.dmp

            memory/3120-72-0x0000000000400000-0x00000000007C2029-memory.dmp

            memory/3120-58-0x0000000000400000-0x00000000007C2029-memory.dmp

            memory/3120-56-0x0000000000400000-0x00000000007C2029-memory.dmp

            memory/3120-50-0x0000000000400000-0x00000000007C2029-memory.dmp

            memory/3120-44-0x0000000000400000-0x00000000007C2029-memory.dmp

            memory/3120-42-0x0000000000400000-0x00000000007C2029-memory.dmp

            memory/3120-47-0x0000000000400000-0x00000000007C2029-memory.dmp

            memory/3120-51-0x0000000000400000-0x00000000007C2029-memory.dmp

            memory/3120-60-0x00000000037B0000-0x00000000038A0000-memory.dmp

            memory/3880-46-0x0000000000400000-0x0000000000452000-memory.dmp

            memory/3880-77-0x0000000002AA0000-0x0000000002AA1000-memory.dmp

            memory/3880-76-0x0000000002AA0000-0x0000000002AA1000-memory.dmp

            memory/3880-75-0x0000000002AA0000-0x0000000002AA1000-memory.dmp

            memory/3880-49-0x0000000000400000-0x0000000000452000-memory.dmp

            memory/3880-74-0x0000000002AA0000-0x0000000002AA1000-memory.dmp

            memory/3880-120-0x0000000000400000-0x0000000000452000-memory.dmp

            memory/3880-55-0x0000000000400000-0x0000000000452000-memory.dmp

            memory/3940-3-0x0000000000400000-0x00000000007C2029-memory.dmp

            memory/3940-2-0x0000000000400000-0x00000000007C2029-memory.dmp

            memory/3940-7-0x0000000000400000-0x00000000007C2029-memory.dmp

            memory/3940-5-0x0000000000400000-0x00000000007C2029-memory.dmp

            memory/3940-4-0x0000000000400000-0x00000000007C2029-memory.dmp

            memory/3940-14-0x0000000000400000-0x00000000007C2029-memory.dmp

            memory/3940-10-0x0000000003840000-0x0000000003930000-memory.dmp

            memory/3940-9-0x0000000000400000-0x00000000007C2029-memory.dmp

            memory/3940-1-0x0000000000400000-0x00000000007C2029-memory.dmp

            memory/3940-0-0x0000000000400000-0x00000000007C2029-memory.dmp

            memory/4868-93-0x0000000000400000-0x000000000044B000-memory.dmp

            memory/4868-124-0x0000000000400000-0x000000000044B000-memory.dmp

            memory/4868-128-0x0000000000400000-0x000000000044B000-memory.dmp

            memory/4868-127-0x0000000000400000-0x000000000044B000-memory.dmp

            memory/4868-126-0x0000000000400000-0x000000000044B000-memory.dmp

            memory/4868-125-0x0000000000400000-0x000000000044B000-memory.dmp

            memory/4868-98-0x0000000000A40000-0x0000000000A41000-memory.dmp

            memory/4868-123-0x0000000000400000-0x000000000044B000-memory.dmp

            memory/4868-92-0x0000000000400000-0x000000000044B000-memory.dmp

            memory/4868-97-0x0000000000720000-0x0000000000721000-memory.dmp

            memory/4868-121-0x0000000000400000-0x000000000044B000-memory.dmp

            memory/4868-122-0x0000000000400000-0x000000000044B000-memory.dmp

            memory/5108-114-0x0000000002230000-0x0000000002231000-memory.dmp

            memory/5108-113-0x0000000002220000-0x0000000002221000-memory.dmp

            memory/5108-115-0x0000000002230000-0x0000000002231000-memory.dmp

            memory/5108-117-0x0000000002AB0000-0x0000000002AEC000-memory.dmp

            memory/5108-118-0x0000000000400000-0x0000000000452000-memory.dmp

            memory/5108-116-0x0000000002230000-0x0000000002231000-memory.dmp