Overview

overview

6

Static

static

3

2026-04-19...ee.exe

windows10-2004-x64

6

2026-04-19...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
    19/04/2026, 03:48

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General

  • Target
    2026-04-19_882f356438cc65586fceda9c4dbeec2e_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
  • Size 780KB
  • Sample260419-ecslvsht21
  • SHA256 970eb0f6f1c089dcff006987adc4ca75676c0e6ff392db8146db2e6c543fd633
  • 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 42 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\2026-04-19_882f356438cc65586fceda9c4dbeec2e_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-19_882f356438cc65586fceda9c4dbeec2e_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:3152
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3152 -s 1340
      2⤵
      • Program crash
      PID:3732
  • C:\Users\Admin\AppData\Local\Temp\2026-04-19_882f356438cc65586fceda9c4dbeec2e_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    C:\Users\Admin\AppData\Local\Temp\2026-04-19_882f356438cc65586fceda9c4dbeec2e_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:3872
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3872 -s 1480
      2⤵
      • Program crash
      PID:2584
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3152 -ip 3152
    1⤵
      PID:3060
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3872 -ip 3872
      1⤵
        PID:1192

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            RCX6533.tmp
            • Path C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins3d\RCX6533.tmp
            • Size 782KB
            • SHA256 39118a5caf4cd9e9370a289953a66cc96b3fbdd332c4d8252fe247bc9ae4f359
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            RCX662F.tmp
            • Path C:\Program Files (x86)\Common Files\Microsoft Shared\VSTA\Pipeline.v10.0\Contracts\RCX662F.tmp
            • Size 782KB
            • SHA256 1df9ae3231e77491f377ed2cdc2ac5c541fccdc6c8d5380525bb502a254777df
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            UpdateMicrosoft.exe
            • Path C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\UpdateMicrosoft.exe
            • Size 780KB
            • SHA256 970eb0f6f1c089dcff006987adc4ca75676c0e6ff392db8146db2e6c543fd633
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            memory/3152-172-0x0000000002380000-0x00000000023E4000-memory.dmp
            Download

            memory/3872-199-0x0000000000AB0000-0x0000000000B14000-memory.dmp
            Download