Overview

overview

10

Static

static

1

Enquiry.js

windows10-2004-x64

10

Enquiry.js

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    107s
  • max time network
    120s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260706-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    09/07/2026, 00:17

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General

  • Target
    Enquiry.js
  • Size 2.0MB
  • Sample260709-aleddaaz5k
  • SHA256 3d99aeca7a9c67dec8cf45f34dad6301ba104b8c7f4a1a6454276ca4403a79c8
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
adwaresystemexecutionremcospersistenceransomwareratspyware

Malware Config

Extracted

Family

  • remcos

Version

  • 7.2.6 Pro

Botnet

  • system

C2

  • 91.92.41.4:2026

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-STXNVT

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Family: Remcos

    Remcos is a closed-source remote control and surveillance software.

    ratremcos
  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Badlisted process makes network request 2 IoCs

    Network request originating from process or tool commonly abused by malware.

  • 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
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

    execution
  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Command and Scripting Interpreter: JavaScript 1 TTPs
    execution
  • 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 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 41 IoCs
  • Suspicious use of FindShellTrayWindow 54 IoCs
  • Suspicious use of SendNotifyMessage 40 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 9 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\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\Enquiry.js
    1⤵
      PID:5596
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -NoProfile -Command "Invoke-Expression $env:chemisette"
      1⤵
      • Process spawned unexpected child process
      • Badlisted process makes network request
      • Command and Scripting Interpreter: PowerShell
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4872
      • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Caspol.exe
        C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Caspol.exe
        2⤵
          PID:2496
      • C:\Windows\system32\sihost.exe
        sihost.exe
        1⤵
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of WriteProcessMemory
        PID:6120
        • 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:2512
      • 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:3544
      • 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:2468

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            prep_Activatable Class_Hermes_perf.cache
            • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
            • Size 607B
            • SHA256 be6b74e52e5eef1f1c27c0976bf3bf1bfa99958c00bbef2898a602f691be6dae
            • MD5 SHA1 SHA512 TLSH
            Submit Download

            memory/2468-38-0x0000020E801E0000-0x0000020E802E0000-memory.dmp
            Download

            memory/2468-46-0x0000020E82B60000-0x0000020E82B80000-memory.dmp
            Download

            memory/2468-47-0x0000020E82D60000-0x0000020E82E60000-memory.dmp
            Download

            memory/2468-56-0x0000020E82BA0000-0x0000020E82BC0000-memory.dmp
            Download

            memory/2468-40-0x0000020E801E0000-0x0000020E802E0000-memory.dmp
            Download

            memory/2468-84-0x0000020E94140000-0x0000020E94160000-memory.dmp
            Download

            memory/2496-17-0x0000000140000000-0x00000001400AB000-memory.dmp
            Download

            memory/4872-8-0x00007FFE48540000-0x00007FFE48EE4000-memory.dmp
            Download

            memory/4872-10-0x00007FFE48540000-0x00007FFE48EE4000-memory.dmp
            Download

            memory/4872-12-0x00007FFE48540000-0x00007FFE48EE4000-memory.dmp
            Download

            memory/4872-13-0x00007FFE48540000-0x00007FFE48EE4000-memory.dmp
            Download

            memory/4872-14-0x00007FFE48540000-0x00007FFE48EE4000-memory.dmp
            Download

            memory/4872-15-0x000002CB58060000-0x000002CB58114000-memory.dmp
            Download

            memory/4872-16-0x000002CB57BF0000-0x000002CB57BFA000-memory.dmp
            Download

            memory/4872-11-0x00007FFE48540000-0x00007FFE48EE4000-memory.dmp
            Download

            memory/4872-19-0x00007FFE48540000-0x00007FFE48EE4000-memory.dmp
            Download

            memory/4872-9-0x00007FFE48540000-0x00007FFE48EE4000-memory.dmp
            Download

            memory/4872-0-0x00007FFE486CF000-0x00007FFE486D0000-memory.dmp
            Download

            memory/4872-7-0x00007FFE48540000-0x00007FFE48EE4000-memory.dmp
            Download

            memory/4872-6-0x00007FFE48540000-0x00007FFE48EE4000-memory.dmp
            Download

            memory/4872-5-0x00007FFE48540000-0x00007FFE48EE4000-memory.dmp
            Download

            memory/4872-4-0x00007FFE48540000-0x00007FFE48EE4000-memory.dmp
            Download

            memory/4872-3-0x000002CB57B70000-0x000002CB57B92000-memory.dmp
            Download