Overview

overview

6

Static

static

3

2026-04-22...ee.exe

windows10-2004-x64

6

2026-04-22...ee.exe

windows11-21h2-x64

6

Analysis

  • max time kernel
    149s
  • max time network
    96s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    22/04/2026, 03:53

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General

  • Target
    2026-04-22_a0ecd573c2c1bd80a4ff7328455ed619_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
  • Size 669KB
  • Sample260422-efppdagw5m
  • SHA256 210fdcb575d259cf23fc6892c776346317e75657b46040e46507d8b814322f63
  • 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\2026-04-22_a0ecd573c2c1bd80a4ff7328455ed619_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-22_a0ecd573c2c1bd80a4ff7328455ed619_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:4152
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4152 -s 1972
      2⤵
      • Program crash
      PID:3836
  • C:\Users\Admin\AppData\Local\Temp\2026-04-22_a0ecd573c2c1bd80a4ff7328455ed619_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    C:\Users\Admin\AppData\Local\Temp\2026-04-22_a0ecd573c2c1bd80a4ff7328455ed619_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:3232
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3232 -s 1304
      2⤵
      • Program crash
      PID:3684
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4152 -ip 4152
    1⤵
      PID:4744
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 3232 -ip 3232
      1⤵
        PID:1748

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            RCX5F36.tmp
            • Path C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\RCX5F36.tmp
            • Size 670KB
            • SHA256 0c1e4b740f17b68c7c4012a0a06e3c371368c8de54e68a98bc17cacc738bf51b
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            WMPNSSCIsetupwm.exe
            • Path C:\Program Files (x86)\Windows Media Player\uk-UA\WMPNSSCIsetupwm.exe
            • Size 669KB
            • SHA256 210fdcb575d259cf23fc6892c776346317e75657b46040e46507d8b814322f63
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            memory/3232-207-0x0000000002210000-0x0000000002274000-memory.dmp
            Download

            memory/4152-168-0x0000000000C00000-0x0000000000C64000-memory.dmp
            Download