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
    149s
  • max time network
    157s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-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 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 30 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 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
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    PID:2728
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2728 -s 1692
      2⤵
      • Program crash
      PID:244
  • 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
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    PID:3220
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3220 -s 1464
      2⤵
      • Program crash
      PID:1720
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2728 -ip 2728
    1⤵
      PID:4608
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3220 -ip 3220
      1⤵
        PID:1676

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            RCX49C0.tmp
            • Path C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AIR\RCX49C0.tmp
            • Size 2.0MB
            • SHA256 9faff543e4f12a86f480b0d7831e9a2996d6094adaae9f04da972a2fd581e585
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            AdobeAcrobat.exe
            • Path C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sample-files\assets\Sample Files\AdobeAcrobat.exe
            • Size 2.0MB
            • SHA256 5abfa32e118f686700e1b191e2e6e25c46fa0bf1d302a1f30e62780311f9ade9
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            RCX3035.tmp
            • Path C:\Program Files (x86)\Common Files\Microsoft Shared\VSTA\Pipeline.v10.0\Contracts\RCX3035.tmp
            • Size 2.0MB
            • SHA256 eed736ef1dc8346defd192aea8ea7a37bcb69d355e0876d940e9010be323c918
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            iexploreiexplore11.00.22000.1.exe
            • Path C:\Program Files (x86)\Internet Explorer\uk-UA\iexploreiexplore11.00.22000.1.exe
            • Size 2.0MB
            • SHA256 9f54e492282f5e2f81bbaef3bedaee74fdf435a73e1879bbfebbb260ea35c3cb
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download