Overview

overview

6

Static

static

3

rapid/Micr...es.dll

windows10-2004-x64

4

rapid/Micr...es.dll

windows11-ltsc_2024-x64

6

rapid/Syst...ic.dll

windows10-2004-x64

1

rapid/Syst...ic.dll

windows11-ltsc_2024-x64

1

rapid/Syst...ns.dll

windows10-2004-x64

1

rapid/Syst...ns.dll

windows11-ltsc_2024-x64

rapid/Syst...es.dll

windows10-2004-x64

1

rapid/Syst...es.dll

windows11-ltsc_2024-x64

rapid/Syst...le.dll

windows10-2004-x64

1

rapid/Syst...le.dll

windows11-ltsc_2024-x64

1

rapid/Syst...ss.dll

windows10-2004-x64

1

rapid/Syst...ss.dll

windows11-ltsc_2024-x64

1

rapid/System.Linq.dll

windows10-2004-x64

1

rapid/System.Linq.dll

windows11-ltsc_2024-x64

6

rapid/Syst...ry.dll

windows10-2004-x64

1

rapid/Syst...ry.dll

windows11-ltsc_2024-x64

1

rapid/Syst...ib.dll

windows10-2004-x64

1

rapid/Syst...ib.dll

windows11-ltsc_2024-x64

1

rapid/Syst...es.dll

windows10-2004-x64

1

rapid/Syst...es.dll

windows11-ltsc_2024-x64

1

rapid/Syst...me.dll

windows10-2004-x64

1

rapid/Syst...me.dll

windows11-ltsc_2024-x64

1

rapid/Syst...ns.dll

windows10-2004-x64

1

rapid/Syst...ns.dll

windows11-ltsc_2024-x64

1

rapid/Syst...ad.dll

windows10-2004-x64

1

rapid/Syst...ad.dll

windows11-ltsc_2024-x64

rapid/Syst...ng.dll

windows10-2004-x64

1

rapid/Syst...ng.dll

windows11-ltsc_2024-x64

rapid/WinU...er.exe

windows10-2004-x64

1

rapid/WinU...er.exe

windows11-ltsc_2024-x64

1

rapid/clrjit.dll

windows10-2004-x64

1

rapid/clrjit.dll

windows11-ltsc_2024-x64

6

Analysis

  • max time kernel
    116s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260618-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    29/06/2026, 12:12

Sharing

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General

  • Target
    rapid/clrjit.dll
  • Size 1.4MB
  • Sample260629-pc8cesew3k
  • SHA256 cc9c853642c185b17d18f189c5e80928963bf485b0eeef7714e94339c5858e88
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
6/10
adwarepersistenceransomwarespyware

Malware Config

Signatures

  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence
  • Enumerates connected drives 3 TTPs 2 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Checks SCSI registry key(s) 3 TTPs 62 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 38 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 36 IoCs
  • Suspicious use of FindShellTrayWindow 54 IoCs
  • Suspicious use of SendNotifyMessage 40 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 1 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.

    persistence
  • Uses Volume Shadow Copy WMI provider

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

    ransomware
  • Uses Volume Shadow Copy service COM API

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

    ransomware

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\rapid\clrjit.dll,#1
    1⤵
      PID:5968
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:3956
      • C:\Windows\explorer.exe
        explorer.exe /LOADSAVEDWINDOWS
        2⤵
        • Boot or Logon Autostart Execution: Active Setup
        • Enumerates connected drives
        • Checks SCSI registry key(s)
        • Modifies Internet Explorer settings
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        PID:3332
    • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
      "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:3872
    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:2232

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          memory/3332-185-0x000000000ABD0000-0x000000000AD5E000-memory.dmp
          Download

          memory/3872-20-0x0000021FF3E40000-0x0000021FF3F40000-memory.dmp
          Download

          memory/3872-61-0x0000021F93F00000-0x0000021F93F20000-memory.dmp
          Download

          memory/3872-28-0x0000021F93AD0000-0x0000021F93BD0000-memory.dmp
          Download

          memory/3872-43-0x0000021F838F0000-0x0000021F83910000-memory.dmp
          Download

          memory/3872-27-0x0000021F83690000-0x0000021F836B0000-memory.dmp
          Download