Analysis

  • max time kernel
    151s
  • max time network
    136s
  • 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, 01:57

General

  • Target
    install_sint016.exe
  • Size 40.7MB
  • Sample260813-cdc7fszbrh
  • SHA256 d71abd7c4df0e1b93d1545dd2d281c4fd488b6c944fcffe2afedcc2d4a9ff9a7
  • 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 2 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 6 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_sint016.exe
    "C:\Users\Admin\AppData\Local\Temp\install_sint016.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    PID:5024
  • C:\Users\Public\r0UGZG\ZZkNos.exe
    "C:\Users\Public\r0UGZG\ZZkNos.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:1944
    • 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:4116
    • 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\r0UGZG\" /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:5892
      • 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\r0UGZG\" /t REG_DWORD /d 0 /f"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:5452
      • C:\Windows\system32\schtasks.exe
        SCHTASKS /Run /TN "Task1"
        3⤵
          PID:5832
        • C:\Windows\system32\schtasks.exe
          SCHTASKS /Delete /TN "Task1" /F
          3⤵
            PID:3520
        • 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:2852
          • 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:4872
          • C:\Windows\system32\schtasks.exe
            SCHTASKS /Run /TN "Task1"
            3⤵
              PID:824
            • C:\Windows\system32\schtasks.exe
              SCHTASKS /Delete /TN "Task1" /F
              3⤵
                PID:1280
            • 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:2296
              • 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:796
              • C:\Windows\system32\schtasks.exe
                SCHTASKS /Run /TN "Task1"
                3⤵
                  PID:5036
                • C:\Windows\system32\schtasks.exe
                  SCHTASKS /Delete /TN "Task1" /F
                  3⤵
                    PID:1180
                • 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:5020
                  • 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:4596
                  • C:\Windows\system32\schtasks.exe
                    SCHTASKS /Run /TN "Task1"
                    3⤵
                      PID:1120
                    • C:\Windows\system32\schtasks.exe
                      SCHTASKS /Delete /TN "Task1" /F
                      3⤵
                        PID:5296
                    • 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:3944
                      • 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:5432
                      • C:\Windows\system32\schtasks.exe
                        SCHTASKS /Run /TN "Task1"
                        3⤵
                          PID:2368
                        • C:\Windows\system32\schtasks.exe
                          SCHTASKS /Delete /TN "Task1" /F
                          3⤵
                            PID:3056
                      • C:\Users\Public\r0UGZG\ZZkNos.exe
                        "C:\Users\Public\r0UGZG\ZZkNos.exe"
                        1⤵
                        • Executes dropped EXE
                        • Loads dropped DLL
                        PID:5472
                      • C:\Windows\system32\cmd.exe
                        "cmd.exe" /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\r0UGZG" /t REG_DWORD /d 0 /f
                        1⤵
                        • Executes a command shell one-liner
                        • Suspicious use of WriteProcessMemory
                        PID:6116
                        • C:\Windows\System32\reg.exe
                          reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\r0UGZG" /t REG_DWORD /d 0 /f
                          2⤵
                          • Windows security bypass
                          PID:3484
                      • C:\Windows\system32\cmd.exe
                        cmd.exe
                        1⤵
                          PID:5484
                        • C:\Windows\system32\cmd.exe
                          "cmd.exe" /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users" /t REG_DWORD /d 0 /f
                          1⤵
                          • Executes a command shell one-liner
                          • Suspicious use of WriteProcessMemory
                          PID:2448
                          • C:\Windows\System32\reg.exe
                            reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users" /t REG_DWORD /d 0 /f
                            2⤵
                            • Windows security bypass
                            PID:4704
                        • C:\Windows\system32\cmd.exe
                          "cmd.exe" /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Program Files (x86)" /t REG_DWORD /d 0 /f
                          1⤵
                          • Executes a command shell one-liner
                          • Suspicious use of WriteProcessMemory
                          PID:1988
                          • C:\Windows\System32\reg.exe
                            reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Program Files (x86)" /t REG_DWORD /d 0 /f
                            2⤵
                            • Windows security bypass
                            PID:2400

                        Network

                              MITRE ATT&CK Enterprise v16

                              Replay Monitor

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                              Downloads

                              UxEnhance64.dll

                              • Path C:\Users\Public\r0UGZG\UxEnhance64.dll
                              • Size 3.1MB
                              • SHA256 857105d5670b8f90c3aa84f0bb8ac4d00fbfb09df3c9c6ba73f535c0c4c54155
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              ZZkNos.exe

                              • Path C:\Users\Public\r0UGZG\ZZkNos.exe
                              • Size 135KB
                              • SHA256 676a2a7b94ca2f8ec76352ee656e4d075bb342bd7ad6efbc7c19c060001eace7
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              adoresd.dat

                              • Path C:\Users\Public\r0UGZG\adoresd.dat
                              • Size 4.7MB
                              • SHA256 efd2a8616b53ea6a058a1fed15641c917d33b7f7f45d0ec85759a4df228a67a0
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              msadox.tb

                              • Path C:\Users\Public\r0UGZG\msadox.tb
                              • Size 8KB
                              • SHA256 02f685f6f567508d177c86c3112fc13c9db626c0d0b2bedfb6f0edc1ceefc84c
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              memory/1944-556-0x0000019A49D20000-0x0000019A49D6E000-memory.dmp

                              memory/1944-561-0x0000019A4B140000-0x0000019A4B1CA000-memory.dmp

                              memory/1944-558-0x0000019A4B140000-0x0000019A4B1CA000-memory.dmp

                              memory/1944-559-0x0000019A4B140000-0x0000019A4B1CA000-memory.dmp

                              memory/1944-530-0x00007FFA6DCB0000-0x00007FFA6DCB2000-memory.dmp

                              memory/1944-531-0x00007FFA4B070000-0x00007FFA4B58E000-memory.dmp

                              memory/1944-565-0x0000019A4A8A0000-0x0000019A4B131000-memory.dmp

                              memory/1944-560-0x0000019A4B140000-0x0000019A4B1CA000-memory.dmp

                              memory/1944-536-0x0000019A4A8A0000-0x0000019A4B131000-memory.dmp

                              memory/1944-539-0x0000019A4A8A0000-0x0000019A4B131000-memory.dmp

                              memory/1944-544-0x0000019A4A8A0000-0x0000019A4B131000-memory.dmp

                              memory/1944-543-0x0000019A4A8A0000-0x0000019A4B131000-memory.dmp

                              memory/1944-538-0x00007FFA6DCC0000-0x00007FFA6DCC2000-memory.dmp

                              memory/1944-545-0x0000019A4A8A0000-0x0000019A4B131000-memory.dmp

                              memory/1944-546-0x0000019A4A8A0000-0x0000019A4B131000-memory.dmp

                              memory/1944-550-0x0000019A4A8A0000-0x0000019A4B131000-memory.dmp

                              memory/1944-563-0x0000019A4A8A0000-0x0000019A4B131000-memory.dmp

                              memory/4116-591-0x0000017509F70000-0x0000017509F92000-memory.dmp

                              memory/4116-594-0x0000017522320000-0x000001752233E000-memory.dmp

                              memory/4116-595-0x0000017522340000-0x00000175223F2000-memory.dmp

                              memory/4116-596-0x0000017522300000-0x000001752230A000-memory.dmp

                              memory/5024-524-0x0000000004880000-0x000000000488E000-memory.dmp

                              memory/5024-0-0x0000000004880000-0x000000000488E000-memory.dmp

                              memory/5024-525-0x00007FFA659A0000-0x00007FFA659B2000-memory.dmp

                              memory/5024-504-0x00007FFA659A0000-0x00007FFA659B2000-memory.dmp

                              memory/5024-2-0x0000000004890000-0x000000000489C000-memory.dmp

                              memory/5024-1-0x0000000004880000-0x000000000488E000-memory.dmp

                              memory/5472-578-0x00007FFA6DCC0000-0x00007FFA6DCC2000-memory.dmp

                              memory/5472-579-0x0000020B0E7E0000-0x0000020B0F071000-memory.dmp

                              memory/5472-587-0x00007FFA6DCB0000-0x00007FFA6DCB2000-memory.dmp

                              memory/5472-586-0x0000020B0E7E0000-0x0000020B0F071000-memory.dmp

                              memory/5472-584-0x0000020B0E7E0000-0x0000020B0F071000-memory.dmp

                              memory/5472-583-0x0000020B0E7E0000-0x0000020B0F071000-memory.dmp

                              memory/5472-585-0x0000020B0E7E0000-0x0000020B0F071000-memory.dmp

                              memory/5472-575-0x0000020B0E7E0000-0x0000020B0F071000-memory.dmp

                              memory/5472-572-0x00007FFA4B070000-0x00007FFA4B58E000-memory.dmp