Overview

overview

6

Static

static

3

2026-06-08...ee.exe

windows10-2004-x64

6

2026-06-08...ee.exe

windows11-21h2-x64

6

Analysis

  • max time kernel
    149s
  • max time network
    85s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    08/06/2026, 16:07

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General

  • Target
    2026-06-08_c2d566fc04f9918f58fbf97f139fc63a_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
  • Size 1005KB
  • Sample260608-tkl7dagv7p
  • SHA256 932242a37578c58cecd1d6b573f5bc7110f69b934eb7a7a872db8f1e59f8e852
  • 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 56 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-06-08_c2d566fc04f9918f58fbf97f139fc63a_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-06-08_c2d566fc04f9918f58fbf97f139fc63a_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:2632
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2632 -s 1436
      2⤵
      • Program crash
      PID:1600
  • C:\Users\Admin\AppData\Local\Temp\2026-06-08_c2d566fc04f9918f58fbf97f139fc63a_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    C:\Users\Admin\AppData\Local\Temp\2026-06-08_c2d566fc04f9918f58fbf97f139fc63a_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:4856
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4856 -s 1456
      2⤵
      • Program crash
      PID:3104
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2632 -ip 2632
    1⤵
      PID:5460
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4856 -ip 4856
      1⤵
        PID:2752

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            RCXA1BF.tmp
            • Path C:\Program Files (x86)\Common Files\Microsoft Shared\VSTA\Pipeline.v10.0\Contracts\RCXA1BF.tmp
            • Size 1006KB
            • SHA256 cff6fc45edf5a276e0b835fb9250be61eaecca35cc6afdae35064ed37e601f14
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            widevinecdmModule.exe
            • Path C:\Program Files (x86)\Microsoft\EdgeCore\132.0.2957.140\WidevineCdm\_platform_specific\win_x64\widevinecdmModule.exe
            • Size 1005KB
            • SHA256 932242a37578c58cecd1d6b573f5bc7110f69b934eb7a7a872db8f1e59f8e852
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            ietoedgestubietoedgebho64139.0.3405.125.exe
            • Path C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\BHO\ietoedgestubietoedgebho64139.0.3405.125.exe
            • Size 1006KB
            • SHA256 029ed24cdba43475853fd93134c207361f42291518dbab7a58cc2a1c49510c01
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            RCX92F6.tmp
            • Path C:\Program Files (x86)\Windows Photo Viewer\ja-JP\RCX92F6.tmp
            • Size 1006KB
            • SHA256 6d7b97197227ef7a0d0cc853e498422ec103f3254941cafe3744afcfabf17da8
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download