Overview

overview

6

Static

static

3

2026-06-05...ee.exe

windows10-2004-x64

6

2026-06-05...ee.exe

windows11-21h2-x64

6

Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    05/06/2026, 16:18

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General

  • Target
    2026-06-05_c0f777aa0a8e17b47a8a055e9af203c7_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
  • Size 802KB
  • Sample260605-tr58tscs9l
  • SHA256 86ede4b993a692e9adcaec00794523b664a55807a20a270c16a0022307ffa95e
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
6/10
discoverypersistence

Malware Config

Signatures

  • Adds Run key to start application 2 TTPs 4 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 2 IoCs
  • Drops file in Program Files directory 43 IoCs
  • Program crash 2 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 62 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-06-05_c0f777aa0a8e17b47a8a055e9af203c7_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-06-05_c0f777aa0a8e17b47a8a055e9af203c7_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
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    PID:1336
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1336 -s 1580
      2⤵
      • Program crash
      PID:2016
  • C:\Users\Admin\AppData\Local\Temp\2026-06-05_c0f777aa0a8e17b47a8a055e9af203c7_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    C:\Users\Admin\AppData\Local\Temp\2026-06-05_c0f777aa0a8e17b47a8a055e9af203c7_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    1⤵
    • Adds Run key to start application
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    PID:5624
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5624 -s 1428
      2⤵
      • Program crash
      PID:2804
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1336 -ip 1336
    1⤵
      PID:5556
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 5624 -ip 5624
      1⤵
        PID:3028

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            RCXD4C.tmp
            • Path C:\Program Files (x86)\Microsoft\EdgeCore\139.0.3405.125\WidevineCdm\_platform_specific\win_x64\RCXD4C.tmp
            • Size 804KB
            • SHA256 1854e19249eac471498fa923255f826f971caac2887cc97871f00b2e40d08d91
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            WindowsSistema.exe
            • Path C:\Program Files (x86)\Windows Photo Viewer\es-ES\WindowsSistema.exe
            • Size 802KB
            • SHA256 86ede4b993a692e9adcaec00794523b664a55807a20a270c16a0022307ffa95e
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download