Overview

overview

6

Static

static

3

2026-04-15...ee.exe

windows10-2004-x64

6

2026-04-15...ee.exe

windows11-21h2-x64

6

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    15/04/2026, 04:15

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General

  • Target
    2026-04-15_85545cd925a2a8ab8ffe87049892b36e_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
  • Size 987KB
  • Sample260415-evpb6aev6k
  • SHA256 8008f0cea1a49d5131d52bfdf558fbd49767bd53db5a231698c216f0364bfa8c
  • 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 37 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 52 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-04-15_85545cd925a2a8ab8ffe87049892b36e_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-15_85545cd925a2a8ab8ffe87049892b36e_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:3688
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3688 -s 1500
      2⤵
      • Program crash
      PID:1832
  • C:\Users\Admin\AppData\Local\Temp\2026-04-15_85545cd925a2a8ab8ffe87049892b36e_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    C:\Users\Admin\AppData\Local\Temp\2026-04-15_85545cd925a2a8ab8ffe87049892b36e_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:5772
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5772 -s 1416
      2⤵
      • Program crash
      PID:2012
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3688 -ip 3688
    1⤵
      PID:3712
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 5772 -ip 5772
      1⤵
        PID:5852

      Network

            MITRE ATT&CK Enterprise v16

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            Downloads

            Sistemaoperativo.exe
            • Path C:\Program Files (x86)\Common Files\System\es-ES\Sistemaoperativo.exe
            • Size 987KB
            • SHA256 8008f0cea1a49d5131d52bfdf558fbd49767bd53db5a231698c216f0364bfa8c
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            RCX443.tmp
            • Path C:\Program Files (x86)\Windows Media Player\de-DE\RCX443.tmp
            • Size 988KB
            • SHA256 f23020e64d88cba2592de9689a691a0c7506193697de66aa2209181424f04e14
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            memory/3688-171-0x0000000000A90000-0x0000000000B0B000-memory.dmp
            Download

            memory/5772-172-0x0000000000930000-0x00000000009AB000-memory.dmp
            Download