Analysis

  • max time kernel
    129s
  • max time network
    129s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    26/08/2026, 00:59

General

  • Target
    2026-08-25_f9c0264cd546268c65f855c72a859f1b_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
  • Size 1.4MB
  • Sample260826-bcfera1cph
  • SHA256 c61ce6d955ea8b2c78c113b56752af9b6e7a62e248d9d01c66a93f800a13bbfb
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in System32 directory 6 IoCs
  • Drops file in Program Files directory 38 IoCs
  • Drops file in Windows directory 47 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Checks processor information in registry 2 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-25_f9c0264cd546268c65f855c72a859f1b_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-25_f9c0264cd546268c65f855c72a859f1b_elex_remcos_smoke-loader_stealc_stop_tofsee.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    PID:5100
  • C:\Users\Admin\AppData\Local\Temp\2026-08-25_f9c0264cd546268c65f855c72a859f1b_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    C:\Users\Admin\AppData\Local\Temp\2026-08-25_f9c0264cd546268c65f855c72a859f1b_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    1⤵
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    PID:1656

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        RCX8164.tmp

        • Path C:\Program Files (x86)\Common Files\System\ado\it-IT\RCX8164.tmp
        • Size 1.4MB
        • SHA256 22b6c72a974b6e751e9e45c7636c8ccef8285bce44122c386cec02981834ffcf
        • MD5 SHA1 SHA512 SSDEEP TLSH

        InternetIEXPLORE.exe

        • Path C:\Program Files (x86)\Internet Explorer\ja-JP\InternetIEXPLORE.exe
        • Size 1.4MB
        • SHA256 c61ce6d955ea8b2c78c113b56752af9b6e7a62e248d9d01c66a93f800a13bbfb
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX530B.tmp

        • Path C:\Windows\assembly\GAC_MSIL\System.Windows.Presentation.Resources\3.5.0.0_ja_b77a5c561934e089\RCX530B.tmp
        • Size 1.4MB
        • SHA256 d17a78445ee08c8788170d07a0f6667ccea8e638828feeb41a12eab2ca7ccf62
        • MD5 SHA1 SHA512 SSDEEP TLSH