Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-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 2 IoCs
  • Launches sc.exe 3 IoCs

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

  • 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.

  • Delays execution with timeout.exe 1 IoCs
  • GoLang User-Agent 7 IoCs

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

  • Kills process with taskkill 1 IoCs
  • Modifies data under HKEY_USERS 40 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 10 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 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:6004
    • C:\Windows\system32\cmd.exe
      cmd ver
      2⤵
        PID:6120
      • C:\Windows\system32\taskkill.exe
        taskkill /F /IM UpdateService.exe /T
        2⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:3468
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /Delete /F /TN WinUpdateSvcWatchdog
        2⤵
          PID:2352
        • 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:1336
        • C:\Windows\system32\cmd.exe
          cmd.exe /C start /b "" C:\Users\Admin\AppData\Local\Temp\svc_cleanup_1786856577688450300.bat
          2⤵
          • Executes a command shell one-liner
          • Suspicious use of WriteProcessMemory
          PID:5560
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Local\Temp\svc_cleanup_1786856577688450300.bat
            3⤵
            • Executes a command shell one-liner
            • Suspicious use of WriteProcessMemory
            PID:6056
            • C:\Windows\system32\timeout.exe
              timeout /t 5 /nobreak
              4⤵
              • Delays execution with timeout.exe
              PID:5372
      • 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:4276
        • C:\Windows\system32\cmd.exe
          cmd ver
          2⤵
            PID:644
          • 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:5524
          • 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:3420
            • C:\Windows\system32\cmd.exe
              cmd ver
              3⤵
                PID:1536
            • 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:5712
            • 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:220
            • 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:1764
            • 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:744
            • 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:5104
            • 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:3820
            • 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:5308
            • 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:5620
          • C:\Windows\system32\cmd.exe
            cmd.exe
            1⤵
              PID:5716
            • 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:6008
              • C:\Windows\system32\sc.exe
                sc start WinUpdateSvc
                2⤵
                • Launches sc.exe
                PID:3000
            • 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:3580
              • C:\Windows\system32\sc.exe
                sc start WinUpdateSvc
                2⤵
                • Launches sc.exe
                PID:5700
            • 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:2808
              • C:\Windows\system32\sc.exe
                sc start WinUpdateSvc
                2⤵
                • Launches sc.exe
                PID:3508

            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 7KB
                  • SHA256 6bdd227fd194325b11c018a2a4a814d5f25df9da322ce95afdd07e13efd43685
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  client.log

                  • Path C:\ProgramData\Microsoft\Update\client.log
                  • Size 4KB
                  • SHA256 ccc074bdfe7df507462d205c22782b5fd94f15a2936bdf047d60bbce749b2909
                  • 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_1786856577688450300.bat

                  • Path C:\Users\Admin\AppData\Local\Temp\svc_cleanup_1786856577688450300.bat
                  • Size 234B
                  • SHA256 3523cb00c719fbb583e083e8bc068583f52cf4d2836ee080b24ad47312d74d93
                  • MD5 SHA1 SHA512 TLSH