Overview

overview

6

Static

static

3

2026-04-20...ee.exe

windows10-2004-x64

6

2026-04-20...ee.exe

windows11-21h2-x64

6

Analysis

  • max time kernel
    131s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    20/04/2026, 14:06

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General

  • Target
    2026-04-20_b4d0c656ebc6b696d8702caff959c2ca_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
  • Size 2.0MB
  • Sample260420-relmjsgt9s
  • SHA256 9f54e492282f5e2f81bbaef3bedaee74fdf435a73e1879bbfebbb260ea35c3cb
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
6/10
discoverypersistence

Malware Config

Signatures

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

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

    discovery
  • Drops file in System32 directory 9 IoCs
  • Drops file in Program Files directory 27 IoCs
  • Drops file in Windows directory 64 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.

    discovery
  • Checks processor information in registry 2 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 50 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-04-20_b4d0c656ebc6b696d8702caff959c2ca_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-20_b4d0c656ebc6b696d8702caff959c2ca_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:4968
  • C:\Users\Admin\AppData\Local\Temp\2026-04-20_b4d0c656ebc6b696d8702caff959c2ca_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    C:\Users\Admin\AppData\Local\Temp\2026-04-20_b4d0c656ebc6b696d8702caff959c2ca_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:4136

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        WebInstallerUnicode.exe
        • Path C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\WebInstallerUnicode.exe
        • Size 2.1MB
        • SHA256 465e5d8dd4385c383e2f22db5559a71f4a6e6afa46e0927135b0ad8e612c0476
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX399B.tmp
        • Path C:\Program Files (x86)\Common Files\System\Ole DB\en-US\RCX399B.tmp
        • Size 2.0MB
        • SHA256 7e653b4ecbfa7c6cd140fcba1ef54030baa077837769a96ce2e3db02f5dca26e
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        SystmeWindows.exe
        • Path C:\Program Files (x86)\Common Files\System\fr-FR\SystmeWindows.exe
        • Size 2.0MB
        • SHA256 9f54e492282f5e2f81bbaef3bedaee74fdf435a73e1879bbfebbb260ea35c3cb
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX4635.tmp
        • Path C:\Windows\assembly\GAC_MSIL\Microsoft.Build.Tasks.Resources\2.0.0.0_it_b03f5f7f11d50a3a\RCX4635.tmp
        • Size 2.0MB
        • SHA256 cb47485a915775fa46d4d69d504b449e5f1d7787d9169245c501775c9ddc3593
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/4136-143-0x0000000000970000-0x00000000009F7000-memory.dmp
        Download

        memory/4968-142-0x0000000000BD0000-0x0000000000C57000-memory.dmp
        Download