Overview

overview

10

Static

static

10

R1.exe

windows10-ltsc_2021-x64

10

Analysis

  • max time kernel
    60s
  • max time network
    64s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260911-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260911-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    24/09/2026, 04:28

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General

  • Target
    R1.exe
  • Size 645KB
  • Sample260924-e36w6syfjf
  • SHA256 ba930ba9853ebabe6ed569bfa1c0bccae51f697dd61e940012115f973e648a6e
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
remotehostremcospersistenceratspywarestealer

Malware Config

Extracted

Family

  • remcos

Version

  • 7.3.1 Pro

Botnet

  • RemoteHost

C2

  • www.xoso6684.com:443

  • xoso6684.com:443

  • www.xoso6684.com:8080

  • xoso6684.com:8080

  • api.xoso6684.com:8080

  • c2.xoso6684.com:8080

  • malware.xoso6684.com:8080

  • backdoor.xoso6684.com:8080

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    2

  • copy_file

    S8.exe

  • copy_folder

    S8

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %WinDir%\System32

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    S8

  • mouse_option

    false

  • mutex

    f4stb4ck-CF87J1

  • screenshot_crypt

    false

  • screenshot_flag

    true

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    

  • take_screenshot_option

    true

  • take_screenshot_time

    5

  • take_screenshot_title

    chrome;discord;facebook;telegram

Signatures

  • Family: Remcos

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

    ratremcos
  • Adds policy Run key to start application 2 TTPs 4 IoCs
    persistence
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Adds Run key to start application 2 TTPs 4 IoCs
    persistence
  • Drops file in System32 directory 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\R1.exe
    "C:\Users\Admin\AppData\Local\Temp\R1.exe"
    1⤵
    • Adds policy Run key to start application
    • Checks computer location settings
    • Adds Run key to start application
    • Drops file in System32 directory
    • Suspicious use of WriteProcessMemory
    PID:1156
    • C:\Windows\SysWOW64\S8\S8.exe
      "C:\Windows\SysWOW64\S8\S8.exe"
      2⤵
      • Adds policy Run key to start application
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4764
      • C:\Windows\system32\svchost.exe
        "C:\Windows\system32\svchost.exe"
        3⤵
          PID:3728
    • C:\Windows\system32\AUDIODG.EXE
      C:\Windows\system32\AUDIODG.EXE 0x304 0x4f8
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1248

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          logs.dat
          • Path C:\ProgramData\S8\logs.dat
          • Size 1KB
          • SHA256 ccc22949fadbd8f5ddabc308dedaf9b90fe6151625dd267aa8a6b6fc1d755376
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          S8.exe
          • Path C:\Windows\SysWOW64\S8\S8.exe
          • Size 645KB
          • SHA256 ba930ba9853ebabe6ed569bfa1c0bccae51f697dd61e940012115f973e648a6e
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          memory/3728-4-0x0000000140000000-0x00000001400AF000-memory.dmp
          Download