Analysis

  • max time kernel
    145s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    21/07/2026, 20:00

General

  • Target
    appstep.58680017.exe
  • Size 54.3MB
  • Sample260721-yrdwsstdkf
  • SHA256 f2ccce710b27f154bff6a1bf72bb8799f7903aad3d43485efc341b07dbb96c93
  • 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 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 1 IoCs
  • Suspicious use of WriteProcessMemory 17 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:784
  • C:\Users\Public\8ot5bo\lc1ao4.exe
    "C:\Users\Public\8ot5bo\lc1ao4.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:4600
    • 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:3096
    • 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\8ot5bo\" /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:1600
      • 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\8ot5bo\" /t REG_DWORD /d 0 /f"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:4444
      • C:\Windows\system32\schtasks.exe
        SCHTASKS /Run /TN "Task1"
        3⤵
          PID:6064
        • C:\Windows\system32\schtasks.exe
          SCHTASKS /Delete /TN "Task1" /F
          3⤵
            PID:3368
        • 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:6000
          • 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:1056
          • C:\Windows\system32\schtasks.exe
            SCHTASKS /Run /TN "Task1"
            3⤵
              PID:2388
            • C:\Windows\system32\schtasks.exe
              SCHTASKS /Delete /TN "Task1" /F
              3⤵
                PID:5628
            • 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:1252
              • 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:1812
              • C:\Windows\system32\schtasks.exe
                SCHTASKS /Run /TN "Task1"
                3⤵
                  PID:4144
                • C:\Windows\system32\schtasks.exe
                  SCHTASKS /Delete /TN "Task1" /F
                  3⤵
                    PID:4356
                • 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:4524
                  • 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:5552
                  • C:\Windows\system32\schtasks.exe
                    SCHTASKS /Run /TN "Task1"
                    3⤵
                      PID:3008
                    • C:\Windows\system32\schtasks.exe
                      SCHTASKS /Delete /TN "Task1" /F
                      3⤵
                        PID:1456
                    • 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:5544
                      • 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:3172
                      • C:\Windows\system32\schtasks.exe
                        SCHTASKS /Run /TN "Task1"
                        3⤵
                          PID:1968
                        • C:\Windows\system32\schtasks.exe
                          SCHTASKS /Delete /TN "Task1" /F
                          3⤵
                            PID:2436
                      • C:\Users\Public\8ot5bo\lc1ao4.exe
                        "C:\Users\Public\8ot5bo\lc1ao4.exe"
                        1⤵
                        • Executes dropped EXE
                        • Loads dropped DLL
                        PID:3752
                      • C:\Windows\system32\cmd.exe
                        cmd.exe
                        1⤵
                          PID:5184
                        • C:\Windows\system32\cmd.exe
                          "cmd.exe" /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\8ot5bo" /t REG_DWORD /d 0 /f
                          1⤵
                          • Executes a command shell one-liner
                          PID:1156
                          • C:\Windows\System32\reg.exe
                            reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\8ot5bo" /t REG_DWORD /d 0 /f
                            2⤵
                              PID:4940
                          • 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:5420
                            • 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:1428
                            • 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:1496
                              • 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:52

                              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 7061f6e38685fc94d84564ab2356649f26959ae2d93ddbc54abdb57d6671913c
                                    • 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 e087fa1e52afde542b8d369b87e0d7396ee825e4863f317ab4dc87ec610faf59
                                    • MD5 SHA1 SHA512 TLSH

                                    B039FEA45CB4CC4BBACFC013C7C55604_FA4759C1FDA1D5B56F6A969553761240

                                    • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B039FEA45CB4CC4BBACFC013C7C55604_FA4759C1FDA1D5B56F6A969553761240
                                    • Size 510B
                                    • SHA256 1b4319ca5bcc5e18c17ccde4a5159af2c07414a676d33a5757218f2341f81b92
                                    • MD5 SHA1 SHA512 TLSH

                                    UxEnhance64.dll

                                    • Path C:\Users\Public\8ot5bo\UxEnhance64.dll
                                    • Size 3.1MB
                                    • SHA256 5999922e1e8bf2de16dfc195f6e531c2ed427310d7dc6638d687034da226676c
                                    • MD5 SHA1 SHA512 SSDEEP TLSH

                                    adoresd.dat

                                    • Path C:\Users\Public\8ot5bo\adoresd.dat
                                    • Size 4.8MB
                                    • SHA256 4451cdee7acfb78722e325709fa596493fcfb2ace5dc6ab29a40094208ce6e62
                                    • MD5 SHA1 SHA512 SSDEEP TLSH

                                    lc1ao4.exe

                                    • Path C:\Users\Public\8ot5bo\lc1ao4.exe
                                    • Size 135KB
                                    • SHA256 676a2a7b94ca2f8ec76352ee656e4d075bb342bd7ad6efbc7c19c060001eace7
                                    • MD5 SHA1 SHA512 SSDEEP TLSH

                                    msadox.tb

                                    • Path C:\Users\Public\8ot5bo\msadox.tb
                                    • Size 8KB
                                    • SHA256 5d89ed3c5044578b59c41a00f2dce8d24d735a1c70f7b93e7b3f00ef01035976
                                    • MD5 SHA1 SHA512 SSDEEP TLSH

                                    memory/784-0-0x0000000005520000-0x000000000552D000-memory.dmp

                                    memory/784-525-0x00007FFBE6200000-0x00007FFBE6212000-memory.dmp

                                    memory/784-524-0x0000000005520000-0x000000000552D000-memory.dmp

                                    memory/784-504-0x00007FFBE6200000-0x00007FFBE6212000-memory.dmp

                                    memory/784-2-0x0000000005530000-0x000000000553B000-memory.dmp

                                    memory/784-1-0x0000000005520000-0x000000000552D000-memory.dmp

                                    memory/3096-605-0x00000200C8FB0000-0x00000200C8FBA000-memory.dmp

                                    memory/3096-599-0x00000200C8F30000-0x00000200C8F52000-memory.dmp

                                    memory/3096-602-0x00000200C8F90000-0x00000200C8FAE000-memory.dmp

                                    memory/3096-603-0x00000200C9240000-0x00000200C92F2000-memory.dmp

                                    memory/3752-580-0x0000027A04850000-0x0000027A0510E000-memory.dmp

                                    memory/3752-590-0x0000027A04850000-0x0000027A0510E000-memory.dmp

                                    memory/3752-589-0x0000027A04850000-0x0000027A0510E000-memory.dmp

                                    memory/3752-587-0x0000027A04850000-0x0000027A0510E000-memory.dmp

                                    memory/3752-591-0x00007FFBEECB0000-0x00007FFBEECB2000-memory.dmp

                                    memory/3752-588-0x0000027A04850000-0x0000027A0510E000-memory.dmp

                                    memory/3752-585-0x0000027A04850000-0x0000027A0510E000-memory.dmp

                                    memory/3752-582-0x00007FFBEECC0000-0x00007FFBEECC2000-memory.dmp

                                    memory/3752-574-0x00007FFBCC070000-0x00007FFBCC58E000-memory.dmp

                                    memory/4600-557-0x000001F82E850000-0x000001F82E8DA000-memory.dmp

                                    memory/4600-550-0x000001F82DF90000-0x000001F82E84E000-memory.dmp

                                    memory/4600-545-0x000001F82DF90000-0x000001F82E84E000-memory.dmp

                                    memory/4600-544-0x000001F82DF90000-0x000001F82E84E000-memory.dmp

                                    memory/4600-565-0x000001F82DF90000-0x000001F82E84E000-memory.dmp

                                    memory/4600-543-0x000001F82DF90000-0x000001F82E84E000-memory.dmp

                                    memory/4600-539-0x000001F82DF90000-0x000001F82E84E000-memory.dmp

                                    memory/4600-563-0x000001F82DF90000-0x000001F82E84E000-memory.dmp

                                    memory/4600-546-0x000001F82DF90000-0x000001F82E84E000-memory.dmp

                                    memory/4600-566-0x000001F82DF90000-0x000001F82E84E000-memory.dmp

                                    memory/4600-558-0x000001F82E850000-0x000001F82E8DA000-memory.dmp

                                    memory/4600-559-0x000001F82E850000-0x000001F82E8DA000-memory.dmp

                                    memory/4600-560-0x000001F82E850000-0x000001F82E8DA000-memory.dmp

                                    memory/4600-556-0x000001F82D4C0000-0x000001F82D50E000-memory.dmp

                                    memory/4600-538-0x00007FFBEECC0000-0x00007FFBEECC2000-memory.dmp

                                    memory/4600-536-0x000001F82DF90000-0x000001F82E84E000-memory.dmp

                                    memory/4600-531-0x00007FFBCC070000-0x00007FFBCC58E000-memory.dmp

                                    memory/4600-530-0x00007FFBEECB0000-0x00007FFBEECB2000-memory.dmp