Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-05-2024 02:48

General

  • Target

    c746e7c247eee784dcf1dbd2fff1f7ad60b690d9bdc44f817c8c283345170e65.exe

  • Size

    326KB

  • MD5

    931e880ae29b28a423844c1326add676

  • SHA1

    39a01c428f0b758a60cbb303718c73cab06ad823

  • SHA256

    c746e7c247eee784dcf1dbd2fff1f7ad60b690d9bdc44f817c8c283345170e65

  • SHA512

    fc750c6689c3c894cdef1d35d05e512417c81c62b058e5534b1d61947425bf3d65c5578a9bb4c861f0a883ec5a6d89be00e9a8e803f16d150e35760d6e6f7081

  • SSDEEP

    3072:Ie2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38XV:IsxD5cwohO+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 5 IoCs
  • ModiLoader Second Stage 5 IoCs
  • UPX dump on OEP (original entry point) 18 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 18 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\c746e7c247eee784dcf1dbd2fff1f7ad60b690d9bdc44f817c8c283345170e65.exe
    "C:\Users\Admin\AppData\Local\Temp\c746e7c247eee784dcf1dbd2fff1f7ad60b690d9bdc44f817c8c283345170e65.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2900
    • C:\Users\Admin\AppData\Local\Temp\c746e7c247eee784dcf1dbd2fff1f7ad60b690d9bdc44f817c8c283345170e65.exe
      "C:\Users\Admin\AppData\Local\Temp\c746e7c247eee784dcf1dbd2fff1f7ad60b690d9bdc44f817c8c283345170e65.exe"
      2⤵
      • Checks computer location settings
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:892
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\OMREI.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1280
        • 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:4312
      • 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:3256
        • 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:3244
        • C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
          4⤵
          • Executes dropped EXE
          PID:3076

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

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

    145B

    MD5

    4eb61ec7816c34ec8c125acadc57ec1b

    SHA1

    b0015cc865c0bb1a027be663027d3829401a31cc

    SHA256

    08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

    SHA512

    f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

    326KB

    MD5

    4ddcea814a34a31c69458878a48cb387

    SHA1

    71796e9640d349ad885baede2c0372b325b71249

    SHA256

    eb7d22406396244b61f606bc57d8d1b1e259c3225e93bfa43ffab9e0c85f6278

    SHA512

    26c656236145378a5273ae27fdb24d8262bfb16516a7da04e24a7ba06a0f7e7cef399211d770f842779f839e19c9fdcacf584bc1b87f8ba55b75af0ea0cb0c50

  • memory/892-56-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/892-10-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/892-9-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/892-3-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/2900-8-0x0000000002A40000-0x0000000002A42000-memory.dmp
    Filesize

    8KB

  • memory/2900-7-0x0000000002A30000-0x0000000002A32000-memory.dmp
    Filesize

    8KB

  • memory/2900-6-0x0000000002A20000-0x0000000002A22000-memory.dmp
    Filesize

    8KB

  • memory/2900-5-0x0000000002A10000-0x0000000002A12000-memory.dmp
    Filesize

    8KB

  • memory/2900-11-0x0000000000400000-0x0000000000454000-memory.dmp
    Filesize

    336KB

  • memory/2900-0-0x0000000000400000-0x0000000000454000-memory.dmp
    Filesize

    336KB

  • memory/3076-51-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/3076-43-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/3076-53-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/3076-50-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/3076-49-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/3076-47-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/3076-59-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/3244-58-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/3256-35-0x0000000000400000-0x0000000000454000-memory.dmp
    Filesize

    336KB

  • memory/3256-48-0x0000000000400000-0x0000000000454000-memory.dmp
    Filesize

    336KB

  • memory/3256-46-0x0000000000400000-0x0000000000454000-memory.dmp
    Filesize

    336KB