Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    10/09/2026, 10:07

General

  • Target
    LETTER_OF_AUTHORIZATION.js
  • Size 2.9MB
  • Sample260910-l5qrasvtcs
  • SHA256 6f8de7554244b802dfe7f28a7b842a9aa91e3cfbf39c34ec4a67b659b5ff63bb
  • 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 3 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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs
  • ConfuserEx .NET packer 2 IoCs

    Detects ConfuserEx .NET packer.

  • Suspicious use of SetThreadContext 23 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 64 IoCs
  • Suspicious behavior: MapViewOfSection 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • outlook_office_path 1 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\LETTER_OF_AUTHORIZATION.js
    1⤵
    • Badlisted process makes network request
    • Checks computer location settings
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2468
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -ExecutionPolicy Bypass -NoProfile -WindowStyle Hidden -File "C:\Temp\ps_3ORdiN4iV8Lb_1789034837166.ps1"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1852
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
        3⤵
          PID:3536
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
          3⤵
            PID:1504
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
            3⤵
              PID:1060
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
              3⤵
                PID:3484
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                3⤵
                  PID:5060
                • 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:3176
                • 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:1164
                • 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:216
                • 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:3432
                • 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:3760
                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                  3⤵
                    PID:3224
                  • 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:2288
                  • 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:1412
                  • 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:4464
                  • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                    3⤵
                      PID:1784
                    • 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:2360
                    • 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:4316
                    • 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:1740
                    • 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:3192
                    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                      3⤵
                        PID:2480
                      • 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:1824
                      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                        3⤵
                          PID:1756
                        • 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:4256
                        • 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:2352
                        • 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:2900
                        • 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:3596
                        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                          3⤵
                            PID:4060
                          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                            3⤵
                              PID:2156
                            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                              3⤵
                                PID:3300
                              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                                "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
                                3⤵
                                  PID:3232
                              • C:\Windows\SysWOW64\gpresult.exe
                                "C:\Windows\SysWOW64\gpresult.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:1772
                                • C:\Program Files\Google\Chrome\Application\chrome.exe
                                  "C:\Program Files\Google\Chrome\Application\chrome.exe"
                                  3⤵
                                    PID:1468
                                  • C:\Program Files\Mozilla Firefox\Firefox.exe
                                    "C:\Program Files\Mozilla Firefox\Firefox.exe"
                                    3⤵
                                      PID:3028
                                  • C:\Windows\System32\taskkill.exe
                                    "C:\Windows\System32\taskkill.exe" /f /im wscript.exe
                                    2⤵
                                    • Kills process with taskkill
                                    • Suspicious use of AdjustPrivilegeToken
                                    PID:2756
                                • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
                                  "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
                                  1⤵
                                    PID:4408
                                  • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
                                    "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
                                    1⤵
                                      PID:2436

                                    Network

                                          MITRE ATT&CK Enterprise v16

                                          Replay Monitor

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                                          Downloads

                                          ps_3ORdiN4iV8Lb_1789034837166.ps1

                                          • Path C:\Temp\ps_3ORdiN4iV8Lb_1789034837166.ps1
                                          • Size 2.2MB
                                          • SHA256 d6be73838700bdae174a02aa3e95442b3d4a9a7b56c875f3075b4246863ad0db
                                          • MD5 SHA1 SHA512 SSDEEP TLSH

                                          __PSScriptPolicyTest_i4ywlc4x.wcz.ps1

                                          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_i4ywlc4x.wcz.ps1
                                          • Size 60B
                                          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                                          • MD5 SHA1 SHA512 TLSH

                                          memory/1468-43-0x000001EEDAF10000-0x000001EEDAFF5000-memory.dmp

                                          memory/1772-27-0x0000000000F80000-0x0000000000FC3000-memory.dmp

                                          memory/1772-36-0x0000000000F80000-0x0000000000FC3000-memory.dmp

                                          memory/1772-32-0x0000000000F80000-0x0000000000FC3000-memory.dmp

                                          memory/1772-29-0x0000000000F80000-0x0000000000FC3000-memory.dmp

                                          memory/1852-22-0x00000243C7AB0000-0x00000243C7AC0000-memory.dmp

                                          memory/1852-14-0x00000243C9D10000-0x00000243C9D16000-memory.dmp

                                          memory/1852-45-0x00000243C9E00000-0x00000243C9E14000-memory.dmp

                                          memory/1852-17-0x00000243C7AB0000-0x00000243C7AC0000-memory.dmp

                                          memory/1852-19-0x00000243C7AB0000-0x00000243C7AC0000-memory.dmp

                                          memory/1852-2-0x00000243C7AB0000-0x00000243C7AC0000-memory.dmp

                                          memory/1852-10-0x00000243C9C80000-0x00000243C9CA2000-memory.dmp

                                          memory/1852-15-0x00000243C7AB0000-0x00000243C7AC0000-memory.dmp

                                          memory/1852-12-0x00000243C7AB0000-0x00000243C7AC0000-memory.dmp

                                          memory/1852-1-0x00000243C7AB0000-0x00000243C7AC0000-memory.dmp

                                          memory/1852-13-0x00000243C9D00000-0x00000243C9D14000-memory.dmp

                                          memory/1852-24-0x00000243C7AB0000-0x00000243C7AC0000-memory.dmp

                                          memory/2468-33-0x0000000000430000-0x000000000104F000-memory.dmp

                                          memory/2468-26-0x0000000000430000-0x000000000104F000-memory.dmp

                                          memory/2468-62-0x00000169A4EA0000-0x00000169A4FBF000-memory.dmp

                                          memory/2468-35-0x00000169A4EA0000-0x00000169A4FBF000-memory.dmp

                                          memory/3028-51-0x0000018FD4830000-0x0000018FD48FE000-memory.dmp

                                          memory/3176-21-0x0000000000CE0000-0x0000000000D26000-memory.dmp

                                          memory/3176-23-0x0000000000CE0000-0x0000000000D26000-memory.dmp

                                          memory/3176-30-0x0000000000CE0000-0x0000000000D26000-memory.dmp

                                          memory/3176-31-0x0000000001190000-0x00000000011B4000-memory.dmp

                                          memory/3176-20-0x0000000001200000-0x000000000154A000-memory.dmp

                                          memory/3176-18-0x0000000000CE0000-0x0000000000D26000-memory.dmp

                                          memory/3176-16-0x0000000000400000-0x0000000000446000-memory.dmp

                                          memory/3176-28-0x0000000000CE0000-0x0000000000D26000-memory.dmp

                                          memory/3176-25-0x0000000001190000-0x00000000011B4000-memory.dmp