Analysis

  • max time kernel
    134s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    28/08/2026, 12:20

General

  • Target
    2026-08-28_8e9b711d5544efdb00aa97edb8cd63d1_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
  • Size 1.3MB
  • Sample260828-ph3dcsxtax
  • SHA256 d240904bab926ba853fff375cb56f6bb238654a3e8a1060cbdfad95563c3083c
  • 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 2 IoCs
  • Drops file in Program Files directory 30 IoCs
  • Drops file in Windows directory 55 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 62 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-28_8e9b711d5544efdb00aa97edb8cd63d1_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-28_8e9b711d5544efdb00aa97edb8cd63d1_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:2252
  • C:\Users\Admin\AppData\Local\Temp\2026-08-28_8e9b711d5544efdb00aa97edb8cd63d1_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    C:\Users\Admin\AppData\Local\Temp\2026-08-28_8e9b711d5544efdb00aa97edb8cd63d1_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:5036

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        resourcesPrinting.exe

        • Path C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.0\it\resourcesPrinting.exe
        • Size 1.3MB
        • SHA256 d240904bab926ba853fff375cb56f6bb238654a3e8a1060cbdfad95563c3083c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ConversionPresentation.exe

        • Path C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\es\ConversionPresentation.exe
        • Size 1.3MB
        • SHA256 8a147696c8f8bd4baaccbfd328849efc8ca048d85e675809dae100e48f2651e4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX3628.tmp

        • Path C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.Data.resources\v4.0_4.0.0.0_es_b77a5c561934e089\RCX3628.tmp
        • Size 1.3MB
        • SHA256 5206c6e02ad1141db95407056aecfbec5175080d31670db8bda3065de50c34f1
        • MD5 SHA1 SHA512 SSDEEP TLSH