Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-06-2024 19:08

General

  • Target

    19b481f60bf23ce2a2c58aba1944896c2664b4a83a198eba16a62e4865f6ad46.exe

  • Size

    326KB

  • MD5

    05e11957482d313af9803132d45f6390

  • SHA1

    5c250e93d7a4e7bfe55f9b0bd8176df2d6eca6d2

  • SHA256

    19b481f60bf23ce2a2c58aba1944896c2664b4a83a198eba16a62e4865f6ad46

  • SHA512

    28a3c429ccdf1ac90b6032e4642676f2cefb24e22282aa10b876ea2a6f87788c29539a1b405d5b6a5de61fc15b8e47c3578192f2056bc9fcf9f85007f4534411

  • 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 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\19b481f60bf23ce2a2c58aba1944896c2664b4a83a198eba16a62e4865f6ad46.exe
    "C:\Users\Admin\AppData\Local\Temp\19b481f60bf23ce2a2c58aba1944896c2664b4a83a198eba16a62e4865f6ad46.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:636
    • C:\Users\Admin\AppData\Local\Temp\19b481f60bf23ce2a2c58aba1944896c2664b4a83a198eba16a62e4865f6ad46.exe
      "C:\Users\Admin\AppData\Local\Temp\19b481f60bf23ce2a2c58aba1944896c2664b4a83a198eba16a62e4865f6ad46.exe"
      2⤵
      • Checks computer location settings
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2896
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\JCWAD.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4124
        • 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:1404
      • 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:3480
        • 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:3580
        • C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
          4⤵
          • Executes dropped EXE
          PID:3532
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4012 --field-trial-handle=2252,i,16022092570067181109,3235558581947505669,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4932

    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\JCWAD.txt
      Filesize

      145B

      MD5

      4eb61ec7816c34ec8c125acadc57ec1b

      SHA1

      b0015cc865c0bb1a027be663027d3829401a31cc

      SHA256

      08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

      SHA512

      f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

      326KB

      MD5

      ee58279bbdda0ab8eb7a8ea4647b7906

      SHA1

      7aae779ac1e549b2d87bacdd594b709cc2a92951

      SHA256

      9af864233678488b0a8c4d4c0cb71678a7e9e84d0bafb3c77782a3608bf0d4de

      SHA512

      31203327ed886603105349d29b5267063344e01a003b96e2bf2c4a9b4cbc456b0fd9eed1c318b02b38162f805bbf4d7f68e246fce407bbce4c051a4b90139c8d

    • memory/636-13-0x0000000000400000-0x0000000000454000-memory.dmp
      Filesize

      336KB

    • memory/636-3-0x0000000002A40000-0x0000000002A42000-memory.dmp
      Filesize

      8KB

    • memory/636-5-0x0000000002A70000-0x0000000002A72000-memory.dmp
      Filesize

      8KB

    • memory/636-4-0x0000000002A60000-0x0000000002A62000-memory.dmp
      Filesize

      8KB

    • memory/636-0-0x0000000000400000-0x0000000000454000-memory.dmp
      Filesize

      336KB

    • memory/636-10-0x0000000000400000-0x0000000000454000-memory.dmp
      Filesize

      336KB

    • memory/2896-8-0x0000000000400000-0x000000000040B000-memory.dmp
      Filesize

      44KB

    • memory/2896-9-0x0000000000400000-0x000000000040B000-memory.dmp
      Filesize

      44KB

    • memory/2896-6-0x0000000000400000-0x000000000040B000-memory.dmp
      Filesize

      44KB

    • memory/2896-55-0x0000000000400000-0x000000000040B000-memory.dmp
      Filesize

      44KB

    • memory/2896-38-0x0000000000400000-0x000000000040B000-memory.dmp
      Filesize

      44KB

    • memory/3480-54-0x0000000000400000-0x0000000000454000-memory.dmp
      Filesize

      336KB

    • memory/3480-39-0x0000000000400000-0x0000000000454000-memory.dmp
      Filesize

      336KB

    • memory/3480-34-0x0000000000400000-0x0000000000454000-memory.dmp
      Filesize

      336KB

    • memory/3532-45-0x0000000000400000-0x0000000000414000-memory.dmp
      Filesize

      80KB

    • memory/3532-52-0x0000000000400000-0x0000000000414000-memory.dmp
      Filesize

      80KB

    • memory/3532-50-0x0000000000400000-0x0000000000414000-memory.dmp
      Filesize

      80KB

    • memory/3532-51-0x0000000000400000-0x0000000000414000-memory.dmp
      Filesize

      80KB

    • memory/3532-53-0x0000000000400000-0x0000000000414000-memory.dmp
      Filesize

      80KB

    • memory/3532-58-0x0000000000400000-0x0000000000414000-memory.dmp
      Filesize

      80KB

    • memory/3580-57-0x0000000000400000-0x000000000040B000-memory.dmp
      Filesize

      44KB