Analysis

  • max time kernel
    148s
  • max time network
    126s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    08/10/2026, 00:23

General

  • Target
    2026-10-07_f8aace58d1168f68fc274f91a25a18d6_elex_parallax_remcos_remocs_wannacry.exe
  • Size 111KB
  • Sample261008-apy7ysgt9w
  • SHA256 48a1ba637b4a85273db18a2a8d68236aebbd5008e06f117b73f7a29985417dea
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • remcos

Version
  • 2.4.3 Pro

Botnet
  • TINo

C2
  • 185.140.53.140:2404

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    true

  • hide_file

    false

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-5S9O07

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Family: Remcos

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

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • detects Windows exceutables potentially bypassing UAC using eventvwr.exe 1 IoCs
  • Deletes itself 1 TTPs 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Modifies WinLogon 2 TTPs 2 IoCs
  • Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Executes a command shell one-liner 1 TTPs 1 IoCs

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

  • 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.

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-10-07_f8aace58d1168f68fc274f91a25a18d6_elex_parallax_remcos_remocs_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-07_f8aace58d1168f68fc274f91a25a18d6_elex_parallax_remcos_remocs_wannacry.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Adds Run key to start application
    • Modifies WinLogon
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2692
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
      2⤵
      • Deletes itself
      • Executes a VBScript file via the Windows Script Host.
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3536
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\remcos\remcos.exe"
        3⤵
        • Executes a command shell one-liner
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3944
        • C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
          C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
          4⤵
          • Executes dropped EXE
          PID:4192
  • C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
    "C:\Users\Admin\AppData\Roaming\remcos\remcos.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Executes dropped EXE
    • Adds Run key to start application
    • Modifies WinLogon
    • Reads the TCP/IP host and domain name from the registry
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1076
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
      2⤵
        PID:1100

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          install.vbs

          • Path C:\Users\Admin\AppData\Local\Temp\install.vbs
          • Size 690B
          • SHA256 59e08cf3325da3dd37387617abc330f0c9de56e498b10a63c52e1f07932d172e
          • MD5 SHA1 SHA512 TLSH

          logs.dat

          • Path C:\Users\Admin\AppData\Roaming\remcos\logs.dat
          • Size 91B
          • SHA256 32e1fd9f1ffb1b45be33b3e6fb9da056b5d345209228606f51b78a3e326d63f5
          • MD5 SHA1 SHA512 TLSH

          remcos.exe

          • Path C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
          • Size 111KB
          • SHA256 48a1ba637b4a85273db18a2a8d68236aebbd5008e06f117b73f7a29985417dea
          • MD5 SHA1 SHA512 SSDEEP TLSH