Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-06-2024 22:04

General

  • Target

    40de557503794094b0da4b3c2d839bc112240dbbd1453e3b80848bf79c995d6b.exe

  • Size

    90KB

  • MD5

    1da5694a0b4fee7d7641cba7d8a88c27

  • SHA1

    ab6e52140dbabe53fee3bfd2b41e7b3599eaf1a7

  • SHA256

    40de557503794094b0da4b3c2d839bc112240dbbd1453e3b80848bf79c995d6b

  • SHA512

    c644e41dc58a9b67444586fab857d85c1ba5634048684f0d78dcd674b4400204f6c682e6a5c7b21e42b81fb4971e7b5205b803b902f9e14439034e272aa5a203

  • SSDEEP

    1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y

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) 22 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 22 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\40de557503794094b0da4b3c2d839bc112240dbbd1453e3b80848bf79c995d6b.exe
    "C:\Users\Admin\AppData\Local\Temp\40de557503794094b0da4b3c2d839bc112240dbbd1453e3b80848bf79c995d6b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4888
    • C:\Users\Admin\AppData\Local\Temp\40de557503794094b0da4b3c2d839bc112240dbbd1453e3b80848bf79c995d6b.exe
      "C:\Users\Admin\AppData\Local\Temp\40de557503794094b0da4b3c2d839bc112240dbbd1453e3b80848bf79c995d6b.exe"
      2⤵
      • Checks computer location settings
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4468
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\JURQU.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:796
        • 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:936
      • 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:3804
        • 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:4868
        • C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
          4⤵
          • Executes dropped EXE
          PID:3120
  • 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=4332 --field-trial-handle=2252,i,16022092570067181109,3235558581947505669,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3452

    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\JURQU.txt
      Filesize

      145B

      MD5

      4eb61ec7816c34ec8c125acadc57ec1b

      SHA1

      b0015cc865c0bb1a027be663027d3829401a31cc

      SHA256

      08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

      SHA512

      f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

      90KB

      MD5

      facccfe68d94812ed453ed8823564f4c

      SHA1

      13db8c603488aae39c29a283be22799dd7de8970

      SHA256

      07346ac91fce2dbbeec239742c04e99676ad5cf2c9b7211e562204efa8da1b08

      SHA512

      45fffe4fbaa940ceea53c724dfeba93706ce7528360a61758cbed7320adbd6e12a3aedb41c8bcb87de93e3a97aad02d7cfbe3c4626628af41570166947ce7b21

    • memory/3120-53-0x0000000000400000-0x0000000000414000-memory.dmp
      Filesize

      80KB

    • memory/3120-50-0x0000000000400000-0x0000000000414000-memory.dmp
      Filesize

      80KB

    • memory/3120-66-0x0000000000400000-0x0000000000414000-memory.dmp
      Filesize

      80KB

    • memory/3120-60-0x0000000000400000-0x0000000000414000-memory.dmp
      Filesize

      80KB

    • memory/3120-56-0x0000000000400000-0x0000000000414000-memory.dmp
      Filesize

      80KB

    • memory/3120-54-0x0000000000400000-0x0000000000414000-memory.dmp
      Filesize

      80KB

    • memory/3804-46-0x0000000000400000-0x0000000000453000-memory.dmp
      Filesize

      332KB

    • memory/3804-43-0x0000000000400000-0x0000000000453000-memory.dmp
      Filesize

      332KB

    • memory/3804-58-0x0000000000400000-0x0000000000453000-memory.dmp
      Filesize

      332KB

    • memory/3804-42-0x0000000000400000-0x0000000000453000-memory.dmp
      Filesize

      332KB

    • memory/3804-37-0x0000000000400000-0x0000000000453000-memory.dmp
      Filesize

      332KB

    • memory/4468-10-0x0000000000400000-0x000000000040B000-memory.dmp
      Filesize

      44KB

    • memory/4468-41-0x0000000000400000-0x000000000040B000-memory.dmp
      Filesize

      44KB

    • memory/4468-8-0x0000000000400000-0x000000000040B000-memory.dmp
      Filesize

      44KB

    • memory/4468-11-0x0000000000400000-0x000000000040B000-memory.dmp
      Filesize

      44KB

    • memory/4468-64-0x0000000000400000-0x000000000040B000-memory.dmp
      Filesize

      44KB

    • memory/4868-65-0x0000000000400000-0x000000000040B000-memory.dmp
      Filesize

      44KB

    • memory/4888-7-0x0000000002A80000-0x0000000002A82000-memory.dmp
      Filesize

      8KB

    • memory/4888-3-0x0000000000400000-0x0000000000453000-memory.dmp
      Filesize

      332KB

    • memory/4888-5-0x0000000002A50000-0x0000000002A52000-memory.dmp
      Filesize

      8KB

    • memory/4888-14-0x0000000000400000-0x0000000000453000-memory.dmp
      Filesize

      332KB

    • memory/4888-6-0x0000000002A70000-0x0000000002A72000-memory.dmp
      Filesize

      8KB

    • memory/4888-0-0x0000000000400000-0x0000000000453000-memory.dmp
      Filesize

      332KB

    • memory/4888-12-0x0000000000400000-0x0000000000453000-memory.dmp
      Filesize

      332KB

    • memory/4888-4-0x0000000002A40000-0x0000000002A42000-memory.dmp
      Filesize

      8KB