Analysis

  • max time kernel
    298s
  • max time network
    206s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    03/08/2026, 09:15

General

  • Target
    LOA-AD-142026944-7K.Rivera.js
  • Size 3.0MB
  • Sample260803-k8antashma
  • SHA256 cac449d38cc5ec5d21742d5551b6714379d577d15b71b9cb5f40b32c71d61506
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Formbook

    Formbook is a data stealing malware which is capable of stealing data.

  • Formbook payload 6 IoCs
  • Badlisted process makes network request 4 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 19 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 1 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
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 61 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 59 IoCs
  • outlook_office_path 1 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\LOA-AD-142026944-7K.Rivera.js
    1⤵
    • Badlisted process makes network request
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2624
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -ExecutionPolicy Bypass -NoProfile -WindowStyle Hidden -File "C:\Temp\ps_ea6LNhI6A3Mp_1785748552748.ps1"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      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:4380
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
          3⤵
            PID:1132
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
            3⤵
              PID:2928
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
              3⤵
                PID:4304
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                3⤵
                  PID:2584
                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                  3⤵
                  • Suspicious use of SetThreadContext
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious behavior: MapViewOfSection
                  PID:2576
                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                  3⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:1452
                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                  3⤵
                    PID:4396
                  • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                    3⤵
                    • Suspicious behavior: EnumeratesProcesses
                    PID:5492
                  • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                    3⤵
                      PID:2872
                    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                      3⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:2980
                    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                      3⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:4188
                    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                      3⤵
                        PID:3044
                      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                        3⤵
                        • Suspicious behavior: EnumeratesProcesses
                        PID:3036
                      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                        3⤵
                        • Suspicious behavior: EnumeratesProcesses
                        PID:5508
                      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                        3⤵
                        • Suspicious behavior: EnumeratesProcesses
                        PID:4708
                      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                        3⤵
                        • Suspicious behavior: EnumeratesProcesses
                        PID:572
                      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                        3⤵
                        • Suspicious behavior: EnumeratesProcesses
                        PID:1480
                      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                        3⤵
                        • Suspicious behavior: EnumeratesProcesses
                        PID:2296
                      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                        3⤵
                          PID:4220
                        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                          3⤵
                            PID:616
                          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                            3⤵
                            • Suspicious behavior: EnumeratesProcesses
                            PID:5920
                          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                            3⤵
                            • Suspicious behavior: EnumeratesProcesses
                            PID:2692
                          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                            3⤵
                            • Suspicious behavior: EnumeratesProcesses
                            PID:2920
                          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                            3⤵
                            • Suspicious behavior: EnumeratesProcesses
                            PID:4896
                        • C:\Windows\SysWOW64\wusa.exe
                          "C:\Windows\SysWOW64\wusa.exe"
                          2⤵
                          • Accesses Microsoft Outlook profiles
                          • Suspicious use of SetThreadContext
                          • System Location Discovery: System Language Discovery
                          • Modifies Internet Explorer settings
                          • Suspicious behavior: EnumeratesProcesses
                          • Suspicious behavior: MapViewOfSection
                          • Suspicious use of WriteProcessMemory
                          • outlook_office_path
                          PID:1484
                          • C:\Program Files\Mozilla Firefox\Firefox.exe
                            "C:\Program Files\Mozilla Firefox\Firefox.exe"
                            3⤵
                              PID:2616
                          • C:\Windows\System32\taskkill.exe
                            "C:\Windows\System32\taskkill.exe" /f /im wscript.exe
                            2⤵
                            • Kills process with taskkill
                            • Suspicious use of AdjustPrivilegeToken
                            PID:2580

                        Network

                              MITRE ATT&CK Enterprise v16

                              Replay Monitor

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                              Downloads

                              ps_ea6LNhI6A3Mp_1785748552748.ps1

                              • Path C:\Temp\ps_ea6LNhI6A3Mp_1785748552748.ps1
                              • Size 2.2MB
                              • SHA256 969f6a111eeb35e47185ca3c0e1ec35c0c419d228126cafb6cce72ab9dd3362d
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              memory/1484-35-0x0000000000980000-0x00000000009C3000-memory.dmp

                              memory/1484-31-0x0000000000980000-0x00000000009C3000-memory.dmp

                              memory/1484-32-0x0000000000980000-0x00000000009C3000-memory.dmp

                              memory/1484-39-0x0000000000980000-0x00000000009C3000-memory.dmp

                              memory/2576-29-0x0000000001330000-0x0000000001376000-memory.dmp

                              memory/2576-34-0x0000000001330000-0x0000000001376000-memory.dmp

                              memory/2576-33-0x0000000001330000-0x0000000001376000-memory.dmp

                              memory/2576-30-0x00000000018D0000-0x00000000018F5000-memory.dmp

                              memory/2576-23-0x0000000000400000-0x0000000000446000-memory.dmp

                              memory/2576-28-0x0000000001330000-0x0000000001376000-memory.dmp

                              memory/2576-26-0x0000000001330000-0x0000000001376000-memory.dmp

                              memory/2576-27-0x0000000001960000-0x0000000001CD4000-memory.dmp

                              memory/2616-49-0x000001B38D2E0000-0x000001B38D3BC000-memory.dmp

                              memory/2624-37-0x000001F6EB5E0000-0x000001F6EB698000-memory.dmp

                              memory/2624-60-0x000001F6EB5E0000-0x000001F6EB698000-memory.dmp

                              memory/5000-12-0x00007FFD1A0C0000-0x00007FFD1AA64000-memory.dmp

                              memory/5000-13-0x00007FFD1A0C0000-0x00007FFD1AA64000-memory.dmp

                              memory/5000-22-0x00007FFD1A0C0000-0x00007FFD1AA64000-memory.dmp

                              memory/5000-19-0x00007FFD1A0C0000-0x00007FFD1AA64000-memory.dmp

                              memory/5000-24-0x00007FFD1A0C0000-0x00007FFD1AA64000-memory.dmp

                              memory/5000-25-0x00007FFD1A0C0000-0x00007FFD1AA64000-memory.dmp

                              memory/5000-18-0x00007FFD1A0C0000-0x00007FFD1AA64000-memory.dmp

                              memory/5000-17-0x00007FFD1A0C0000-0x00007FFD1AA64000-memory.dmp

                              memory/5000-16-0x00007FFD1A0C0000-0x00007FFD1AA64000-memory.dmp

                              memory/5000-15-0x00007FFD1A0C0000-0x00007FFD1AA64000-memory.dmp

                              memory/5000-14-0x00007FFD1A0C0000-0x00007FFD1AA64000-memory.dmp

                              memory/5000-20-0x00000225A1430000-0x00000225A1448000-memory.dmp

                              memory/5000-1-0x00007FFD1A24F000-0x00007FFD1A250000-memory.dmp

                              memory/5000-11-0x00007FFD1A0C0000-0x00007FFD1AA64000-memory.dmp

                              memory/5000-9-0x00007FFD1A0C0000-0x00007FFD1AA64000-memory.dmp

                              memory/5000-8-0x00007FFD1A0C0000-0x00007FFD1AA64000-memory.dmp

                              memory/5000-7-0x00007FFD1A0C0000-0x00007FFD1AA64000-memory.dmp

                              memory/5000-6-0x00007FFD1A0C0000-0x00007FFD1AA64000-memory.dmp

                              memory/5000-2-0x00000225A13A0000-0x00000225A13C2000-memory.dmp

                              memory/5000-59-0x00007FFD1A0C0000-0x00007FFD1AA64000-memory.dmp

                              memory/5000-3-0x00007FFD1A0C0000-0x00007FFD1AA64000-memory.dmp