Analysis

  • max time kernel
    149s
  • max time network
    125s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    16/08/2026, 05:02

General

  • Target
    2026-08-16_1b2a175200122f454727a714983ff031_coinminer_dosia_frostygoop_glassworm_hive_knight_luca-st.exe
  • Size 21.4MB
  • Sample260816-fpca3sbd33
  • SHA256 edaff13bad2401227db98e70ecef36c910a4ad7079796b03da6a7977e3b7713c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Sparkrat

    Sparkrat is a cross-platfrom backdoor written in Golang.

  • family_sparkrat 1 IoCs

    Detects Sparkrat payload

  • Detects Windows executables referencing non-Windows User-Agents 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Launches sc.exe 1 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • 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.

  • Delays execution with timeout.exe 1 IoCs
  • GoLang User-Agent 6 IoCs

    Uses default user-agent string defined by GoLang HTTP packages.

  • Kills process with taskkill 2 IoCs
  • Modifies data under HKEY_USERS 40 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 7 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 13 IoCs
  • Suspicious use of WriteProcessMemory 22 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\2026-08-16_1b2a175200122f454727a714983ff031_coinminer_dosia_frostygoop_glassworm_hive_knight_luca-st.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-16_1b2a175200122f454727a714983ff031_coinminer_dosia_frostygoop_glassworm_hive_knight_luca-st.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1364
    • C:\Windows\system32\cmd.exe
      cmd ver
      2⤵
        PID:4880
      • C:\Windows\system32\taskkill.exe
        taskkill /F /IM UpdateService.exe /T
        2⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:5744
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /Delete /F /TN WinUpdateSvcWatchdog
        2⤵
          PID:4832
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /Create /F /SC MINUTE /MO 1 /RU SYSTEM /RL HIGHEST /TN WinUpdateSvcWatchdog /TR "cmd.exe /C \"C:\ProgramData\Microsoft\Update\start_service.cmd\""
          2⤵
          • Scheduled Task/Job: Scheduled Task
          PID:1732
        • C:\Windows\system32\cmd.exe
          cmd.exe /C start /b "" C:\Users\Admin\AppData\Local\Temp\svc_cleanup_1786856580012993300.bat
          2⤵
          • Executes a command shell one-liner
          • Suspicious use of WriteProcessMemory
          PID:236
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Local\Temp\svc_cleanup_1786856580012993300.bat
            3⤵
            • Executes a command shell one-liner
            • Suspicious use of WriteProcessMemory
            PID:4160
            • C:\Windows\system32\timeout.exe
              timeout /t 5 /nobreak
              4⤵
              • Delays execution with timeout.exe
              PID:2260
      • C:\Windows\system32\cmd.exe
        cmd.exe
        1⤵
          PID:3720
        • C:\ProgramData\Microsoft\Update\UpdateService.exe
          C:\ProgramData\Microsoft\Update\UpdateService.exe
          1⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4592
          • C:\Windows\system32\cmd.exe
            cmd ver
            2⤵
              PID:6120
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /Create /F /SC MINUTE /MO 1 /RU SYSTEM /RL HIGHEST /TN WinUpdateSvcWatchdog /TR "cmd.exe /C \"C:\ProgramData\Microsoft\Update\start_service.cmd\""
              2⤵
              • Scheduled Task/Job: Scheduled Task
              PID:2872
            • C:\ProgramData\Microsoft\Update\UpdateService.exe
              "C:\ProgramData\Microsoft\Update\UpdateService.exe" --ui-only
              2⤵
              • Executes dropped EXE
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:3528
              • C:\Windows\system32\cmd.exe
                cmd ver
                3⤵
                  PID:5604
            • C:\ProgramData\Microsoft\Update\UpdateService.exe
              C:\ProgramData\Microsoft\Update\UpdateService.exe
              1⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:3020
              • C:\Windows\system32\cmd.exe
                cmd ver
                2⤵
                  PID:5048
                • C:\Windows\system32\taskkill.exe
                  taskkill /F /IM UpdateService.exe /T
                  2⤵
                  • Kills process with taskkill
                  • Suspicious use of AdjustPrivilegeToken
                  PID:5220
              • C:\Windows\system32\cmd.exe
                "cmd.exe" /C "C:\ProgramData\Microsoft\Update\start_service.cmd"
                1⤵
                • Executes a command shell one-liner
                • Suspicious use of WriteProcessMemory
                PID:3392
                • C:\Windows\System32\sc.exe
                  sc start WinUpdateSvc
                  2⤵
                  • Launches sc.exe
                  PID:4636
              • C:\ProgramData\Microsoft\Update\UpdateService.exe
                C:\ProgramData\Microsoft\Update\UpdateService.exe
                1⤵
                • Executes dropped EXE
                • Modifies data under HKEY_USERS
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:1332
                • C:\Windows\system32\cmd.exe
                  cmd ver
                  2⤵
                    PID:4252
                  • C:\Windows\system32\schtasks.exe
                    schtasks.exe /Create /F /SC MINUTE /MO 1 /RU SYSTEM /RL HIGHEST /TN WinUpdateSvcWatchdog /TR "cmd.exe /C \"C:\ProgramData\Microsoft\Update\start_service.cmd\""
                    2⤵
                    • Scheduled Task/Job: Scheduled Task
                    PID:6080
                  • C:\ProgramData\Microsoft\Update\UpdateService.exe
                    "C:\ProgramData\Microsoft\Update\UpdateService.exe" --ui-only
                    2⤵
                    • Executes dropped EXE
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    • Suspicious use of WriteProcessMemory
                    PID:5508
                    • C:\Windows\system32\cmd.exe
                      cmd ver
                      3⤵
                        PID:5948
                    • C:\Windows\system32\schtasks.exe
                      schtasks.exe /Create /F /SC MINUTE /MO 1 /RU SYSTEM /RL HIGHEST /TN WinUpdateSvcWatchdog /TR "cmd.exe /C \"C:\ProgramData\Microsoft\Update\start_service.cmd\""
                      2⤵
                      • Scheduled Task/Job: Scheduled Task
                      PID:912
                    • C:\Windows\system32\schtasks.exe
                      schtasks.exe /Create /F /SC MINUTE /MO 1 /RU SYSTEM /RL HIGHEST /TN WinUpdateSvcWatchdog /TR "cmd.exe /C \"C:\ProgramData\Microsoft\Update\start_service.cmd\""
                      2⤵
                      • Scheduled Task/Job: Scheduled Task
                      PID:4616
                    • C:\Windows\system32\schtasks.exe
                      schtasks.exe /Create /F /SC MINUTE /MO 1 /RU SYSTEM /RL HIGHEST /TN WinUpdateSvcWatchdog /TR "cmd.exe /C \"C:\ProgramData\Microsoft\Update\start_service.cmd\""
                      2⤵
                      • Scheduled Task/Job: Scheduled Task
                      PID:4668
                    • C:\Windows\system32\schtasks.exe
                      schtasks.exe /Create /F /SC MINUTE /MO 1 /RU SYSTEM /RL HIGHEST /TN WinUpdateSvcWatchdog /TR "cmd.exe /C \"C:\ProgramData\Microsoft\Update\start_service.cmd\""
                      2⤵
                      • Scheduled Task/Job: Scheduled Task
                      PID:4292

                  Network

                        MITRE ATT&CK Enterprise v16

                        Replay Monitor

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                        Downloads

                        UpdateService.exe

                        • Path C:\ProgramData\Microsoft\Update\UpdateService.exe
                        • Size 21.4MB
                        • SHA256 edaff13bad2401227db98e70ecef36c910a4ad7079796b03da6a7977e3b7713c
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        client.log

                        • Path C:\ProgramData\Microsoft\Update\client.log
                        • Size 10KB
                        • SHA256 1ada94bf861b8447e63dddbaad2740ffd927d1cdd1b3f575922f08a5c2829dad
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        client.log

                        • Path C:\ProgramData\Microsoft\Update\client.log
                        • Size 13KB
                        • SHA256 b8278222038e1d70b8d02620e3d44498f7a1d298b9c804c67d9f751b80a11238
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        client.log

                        • Path C:\ProgramData\Microsoft\Update\client.log
                        • Size 6KB
                        • SHA256 3fbd554f29c11b8950810d8e1a06f3fefbf4d656347a589abad22cd3b6ded8f4
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        client.log

                        • Path C:\ProgramData\Microsoft\Update\client.log
                        • Size 6KB
                        • SHA256 fad5204b84b0410f489f66550863cfdb07ef90de5a34c712f6ef774104c45c4e
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        start_service.cmd

                        • Path C:\ProgramData\Microsoft\Update\start_service.cmd
                        • Size 44B
                        • SHA256 288893fb4b5598c4904c5af6fe12662560e574e5cbd0734ac42d94268d2710e9
                        • MD5 SHA1 SHA512

                        svc_cleanup_1786856580012993300.bat

                        • Path C:\Users\Admin\AppData\Local\Temp\svc_cleanup_1786856580012993300.bat
                        • Size 234B
                        • SHA256 3523cb00c719fbb583e083e8bc068583f52cf4d2836ee080b24ad47312d74d93
                        • MD5 SHA1 SHA512 TLSH