Analysis

  • max time kernel
    150s
  • max time network
    142s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    09/08/2026, 11:25

General

  • Target
    SysRuntimeMonitor.exe
  • Size 921KB
  • Sample260809-njsd4szxbt
  • SHA256 18c73fb58a65ef856bcdfd8b2cca78328d3f3981b38b934a237a5e3fe5757d01
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Looks up external IP address via web service 1 TTPs 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of WriteProcessMemory 2 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\SysRuntimeMonitor.exe
    "C:\Users\Admin\AppData\Local\Temp\SysRuntimeMonitor.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4416
    • C:\Windows\system32\schtasks.exe
      "schtasks" /Create /F /SC ONLOGON /TN RuntimeBroker /TR \"C:\Users\Admin\AppData\Local\Temp\SysRuntimeMonitor.exe\"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:3424
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\System32\RuntimeBrokerHost.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\System32\RuntimeBrokerHost.exe" --internal-supervised Local\RuntimeBrokerHost-heartbeat-4416-1786274773912 Local\RuntimeBrokerHost-heartbeat-4416-1786274773912 4416 C:\Users\Admin\AppData\Local\Temp\SysRuntimeMonitor.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1868
  • C:\Users\Admin\AppData\Local\Temp\SysRuntimeMonitor.exe
    "C:\Users\Admin\AppData\Local\Temp\SysRuntimeMonitor.exe"
    1⤵
      PID:4240

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          RuntimeBrokerHost.exe

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\System32\RuntimeBrokerHost.exe
          • Size 921KB
          • SHA256 18c73fb58a65ef856bcdfd8b2cca78328d3f3981b38b934a237a5e3fe5757d01
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1868-1-0x0000012F82180000-0x0000012F82193000-memory.dmp

          memory/1868-2-0x0000012F82180000-0x0000012F82193000-memory.dmp

          memory/1868-10-0x0000012F821B0000-0x0000012F821C3000-memory.dmp

          memory/1868-11-0x0000012F821F0000-0x0000012F82203000-memory.dmp

          memory/1868-12-0x0000012F821D0000-0x0000012F821E3000-memory.dmp

          memory/1868-13-0x0000012F82210000-0x0000012F82223000-memory.dmp

          memory/1868-14-0x0000012F82230000-0x0000012F82243000-memory.dmp

          memory/1868-16-0x0000012F82270000-0x0000012F82283000-memory.dmp

          memory/1868-15-0x0000012F82250000-0x0000012F82263000-memory.dmp

          memory/1868-17-0x0000012F821B0000-0x0000012F821C3000-memory.dmp

          memory/1868-18-0x0000012F821F0000-0x0000012F82203000-memory.dmp

          memory/1868-19-0x0000012F821D0000-0x0000012F821E3000-memory.dmp

          memory/1868-20-0x0000012F82210000-0x0000012F82223000-memory.dmp

          memory/1868-21-0x0000012F82230000-0x0000012F82243000-memory.dmp

          memory/1868-22-0x0000012F82250000-0x0000012F82263000-memory.dmp

          memory/1868-23-0x0000012F82270000-0x0000012F82283000-memory.dmp