Analysis

  • max time kernel
    298s
  • max time network
    279s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    10/11/2026, 05:55

General

  • Target
    RFQ201&202-PDF.vbs
  • Size 347KB
  • Sample261110-gmxpnsty5k
  • SHA256 0ab22cf707843b1696dd769c5176cdec7cea3f5a74d5f04d4fb2a820e19b0f18
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    https://royal-wood-3c0d.julianosilvasantospiresrosa.workers.dev/tckdylvztq

  • exe.dropper

    https://royal-wood-3c0d.julianosilvasantospiresrosa.workers.dev/tckdylvztq

Extracted

Family
  • remcos

Version
  • 7.3.1 Pro

Botnet
  • Providers

C2
  • providerss.duckdns.org:25674

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-63GMXQ

  • 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.

  • 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.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\RFQ201&202-PDF.vbs"
    1⤵
    • Executes a VBScript file via the Windows Script Host.
    • Reads the TCP/IP host and domain name from the registry
    PID:5832
  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -WindowStyle Hidden -ExecutionPolicy Bypass -Command "& 'C:\Users\Admin\AppData\Local\Temp\rad7F174.tmp.ps1'; Remove-Item -LiteralPath 'C:\Users\Admin\AppData\Local\Temp\rad7F174.tmp.ps1' -Force -ErrorAction SilentlyContinue"
    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:6024
    • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
      C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
      2⤵
        PID:4324

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          rad7F174.tmp.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\rad7F174.tmp.ps1
          • Size 2KB
          • SHA256 d07be26b34a8586aaf83cd61a83758b955f1770685389c306044196d82b8c6bc
          • MD5 SHA1 SHA512 TLSH

          memory/4324-19-0x0000000140000000-0x00000001400AF000-memory.dmp

          memory/6024-7-0x00007FFF6C690000-0x00007FFF6D034000-memory.dmp

          memory/6024-12-0x00007FFF6C690000-0x00007FFF6D034000-memory.dmp

          memory/6024-1-0x00007FFF6C81F000-0x00007FFF6C820000-memory.dmp

          memory/6024-8-0x00007FFF6C690000-0x00007FFF6D034000-memory.dmp

          memory/6024-9-0x00007FFF6C690000-0x00007FFF6D034000-memory.dmp

          memory/6024-10-0x00007FFF6C690000-0x00007FFF6D034000-memory.dmp

          memory/6024-5-0x0000011EE5010000-0x0000011EE5032000-memory.dmp

          memory/6024-6-0x00007FFF6C690000-0x00007FFF6D034000-memory.dmp

          memory/6024-13-0x00007FFF6C690000-0x00007FFF6D034000-memory.dmp

          memory/6024-14-0x00007FFF6C690000-0x00007FFF6D034000-memory.dmp

          memory/6024-15-0x00007FFF6C690000-0x00007FFF6D034000-memory.dmp

          memory/6024-16-0x0000011EFD600000-0x0000011EFD624000-memory.dmp

          memory/6024-17-0x00007FFF6C690000-0x00007FFF6D034000-memory.dmp

          memory/6024-18-0x00007FFF6C690000-0x00007FFF6D034000-memory.dmp

          memory/6024-4-0x00007FFF6C690000-0x00007FFF6D034000-memory.dmp

          memory/6024-21-0x00007FFF6C690000-0x00007FFF6D034000-memory.dmp