Analysis

  • max time kernel
    125s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    25/09/2026, 18:03

General

  • Target
    2026-09-25_e7f3c534ff918523e7a271e1bf0f0619_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
  • Size 1.2MB
  • Sample260925-wm93bsshjf
  • SHA256 f5beaf30a7dc7812705baf1bb091563b9b1a5558b9797f10e04f0cbc84d9b267
  • 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 39 IoCs
  • Drops file in Windows directory 54 IoCs
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 4 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 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\2026-09-25_e7f3c534ff918523e7a271e1bf0f0619_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-25_e7f3c534ff918523e7a271e1bf0f0619_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
    • Reads the TCP/IP host and domain name from the registry
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    PID:4808
  • C:\Users\Admin\AppData\Local\Temp\2026-09-25_e7f3c534ff918523e7a271e1bf0f0619_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    C:\Users\Admin\AppData\Local\Temp\2026-09-25_e7f3c534ff918523e7a271e1bf0f0619_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    1⤵
    • Drops file in System32 directory
    • Reads the TCP/IP host and domain name from the registry
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    PID:700

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        RCXC531.tmp

        • Path C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\AcroForm\PMP\RCXC531.tmp
        • Size 1.2MB
        • SHA256 38c06c0997bc1ec7b099aa11791ac50663f575e4e50acd311659c1157e374d8f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        TipResTipTsf10.0.19041.1.exe

        • Path C:\Program Files (x86)\Common Files\Microsoft Shared\ink\fr-FR\TipResTipTsf10.0.19041.1.exe
        • Size 1.2MB
        • SHA256 f5beaf30a7dc7812705baf1bb091563b9b1a5558b9797f10e04f0cbc84d9b267
        • MD5 SHA1 SHA512 SSDEEP TLSH