Analysis

  • max time kernel
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    12/08/2026, 08:19

General

  • Target
    LOA-AD-169919-169930.pdf.js
  • Size 2.8MB
  • Sample260812-j7261ascle
  • SHA256 ecba08fd6e47535e2fecf0673ce5e6b49e752e9d6df0b02846ec1aef72a183a8
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Mofksys

    Mofksys is a worm written in VisualBasic.

  • Detects Mofksys worm 4 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • ConfuserEx .NET packer 2 IoCs

    Detects ConfuserEx .NET packer.

  • Suspicious use of SetThreadContext 18 IoCs
  • Command and Scripting Interpreter: JavaScript 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 18 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 49 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 36 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\LOA-AD-169919-169930.pdf.js
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2392
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -ExecutionPolicy Bypass -NoProfile -WindowStyle Hidden -File "C:\Temp\ps_LQxQRwLUlBay_1786522771583.ps1"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4420
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
        3⤵
          PID:3400
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
          3⤵
            PID:3816
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
            3⤵
              PID:5000
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
              3⤵
                PID:5236
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                3⤵
                  PID:4832
                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                  3⤵
                  • System Location Discovery: System Language Discovery
                  • Suspicious use of SetWindowsHookEx
                  PID:4340
                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                  3⤵
                  • System Location Discovery: System Language Discovery
                  • Suspicious use of SetWindowsHookEx
                  PID:704
                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                  3⤵
                  • System Location Discovery: System Language Discovery
                  • Suspicious use of SetWindowsHookEx
                  PID:2948
                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                  3⤵
                  • System Location Discovery: System Language Discovery
                  • Suspicious use of SetWindowsHookEx
                  PID:2564
                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                  3⤵
                    PID:4648
                  • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                    3⤵
                    • System Location Discovery: System Language Discovery
                    • Suspicious use of SetWindowsHookEx
                    PID:2744
                  • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                    3⤵
                      PID:2112
                    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                      3⤵
                      • System Location Discovery: System Language Discovery
                      • Suspicious use of SetWindowsHookEx
                      PID:4032
                    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                      3⤵
                        PID:4072
                      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                        3⤵
                        • System Location Discovery: System Language Discovery
                        • Suspicious use of SetWindowsHookEx
                        PID:1336
                      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                        3⤵
                          PID:1596
                        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                          3⤵
                          • System Location Discovery: System Language Discovery
                          • Suspicious use of SetWindowsHookEx
                          PID:5892
                        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                          3⤵
                          • System Location Discovery: System Language Discovery
                          • Suspicious use of SetWindowsHookEx
                          PID:4456
                        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                          3⤵
                          • System Location Discovery: System Language Discovery
                          • Suspicious use of SetWindowsHookEx
                          PID:5748
                        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                          3⤵
                            PID:5648
                          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                            3⤵
                            • System Location Discovery: System Language Discovery
                            • Suspicious use of SetWindowsHookEx
                            PID:5460
                          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                            3⤵
                              PID:1476
                            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                              3⤵
                              • System Location Discovery: System Language Discovery
                              • Suspicious use of SetWindowsHookEx
                              PID:6036
                            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                              3⤵
                              • System Location Discovery: System Language Discovery
                              • Suspicious use of SetWindowsHookEx
                              PID:5964
                            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                              3⤵
                                PID:5468
                              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                                "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                                3⤵
                                  PID:960
                                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                                  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                                  3⤵
                                  • System Location Discovery: System Language Discovery
                                  • Suspicious use of SetWindowsHookEx
                                  PID:5264
                                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                                  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                                  3⤵
                                  • System Location Discovery: System Language Discovery
                                  • Suspicious use of SetWindowsHookEx
                                  PID:4996
                                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                                  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                                  3⤵
                                  • System Location Discovery: System Language Discovery
                                  • Suspicious use of SetWindowsHookEx
                                  PID:3040
                                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                                  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                                  3⤵
                                  • System Location Discovery: System Language Discovery
                                  • Suspicious use of SetWindowsHookEx
                                  PID:1700
                                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                                  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                                  3⤵
                                    PID:4956
                                  • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                                    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                                    3⤵
                                    • System Location Discovery: System Language Discovery
                                    • Suspicious use of SetWindowsHookEx
                                    PID:4824
                                • C:\Windows\System32\taskkill.exe
                                  "C:\Windows\System32\taskkill.exe" /f /im wscript.exe
                                  2⤵
                                  • Kills process with taskkill
                                  • Suspicious use of AdjustPrivilegeToken
                                  PID:5988

                              Network

                                    MITRE ATT&CK Enterprise v16

                                    Replay Monitor

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                                    Downloads

                                    ps_LQxQRwLUlBay_1786522771583.ps1

                                    • Path C:\Temp\ps_LQxQRwLUlBay_1786522771583.ps1
                                    • Size 2.0MB
                                    • SHA256 d34b4d151c32c7cac9e18b8605c4970b1015e892fbf22ab04c50950eac1db8b7
                                    • MD5 SHA1 SHA512 SSDEEP TLSH

                                    memory/4340-24-0x0000000000400000-0x000000000043E000-memory.dmp

                                    memory/4340-31-0x0000000000400000-0x000000000043E000-memory.dmp

                                    memory/4340-29-0x0000000000400000-0x000000000043E000-memory.dmp

                                    memory/4340-26-0x0000000000400000-0x000000000043E000-memory.dmp

                                    memory/4420-10-0x00007FFC794E0000-0x00007FFC79E84000-memory.dmp

                                    memory/4420-19-0x00007FFC794E0000-0x00007FFC79E84000-memory.dmp

                                    memory/4420-1-0x00007FFC7966F000-0x00007FFC79670000-memory.dmp

                                    memory/4420-11-0x00007FFC794E0000-0x00007FFC79E84000-memory.dmp

                                    memory/4420-12-0x00007FFC794E0000-0x00007FFC79E84000-memory.dmp

                                    memory/4420-13-0x00007FFC794E0000-0x00007FFC79E84000-memory.dmp

                                    memory/4420-14-0x00007FFC794E0000-0x00007FFC79E84000-memory.dmp

                                    memory/4420-15-0x00007FFC794E0000-0x00007FFC79E84000-memory.dmp

                                    memory/4420-16-0x00007FFC794E0000-0x00007FFC79E84000-memory.dmp

                                    memory/4420-17-0x00007FFC794E0000-0x00007FFC79E84000-memory.dmp

                                    memory/4420-18-0x00007FFC794E0000-0x00007FFC79E84000-memory.dmp

                                    memory/4420-9-0x00007FFC794E0000-0x00007FFC79E84000-memory.dmp

                                    memory/4420-20-0x00007FFC794E0000-0x00007FFC79E84000-memory.dmp

                                    memory/4420-22-0x00000288AE110000-0x00000288AE116000-memory.dmp

                                    memory/4420-21-0x00000288AE060000-0x00000288AE074000-memory.dmp

                                    memory/4420-23-0x00000288AE340000-0x00000288AE354000-memory.dmp

                                    memory/4420-8-0x00007FFC794E0000-0x00007FFC79E84000-memory.dmp

                                    memory/4420-6-0x00007FFC794E0000-0x00007FFC79E84000-memory.dmp

                                    memory/4420-5-0x00000288AE070000-0x00000288AE092000-memory.dmp

                                    memory/4420-2-0x00007FFC794E0000-0x00007FFC79E84000-memory.dmp

                                    memory/4420-38-0x00007FFC794E0000-0x00007FFC79E84000-memory.dmp

                                    memory/4420-39-0x00007FFC794E0000-0x00007FFC79E84000-memory.dmp

                                    memory/4420-120-0x00007FFC794E0000-0x00007FFC79E84000-memory.dmp