Overview

overview

6

Static

static

3

2026-05-06...ee.exe

windows10-2004-x64

6

2026-05-06...ee.exe

windows11-21h2-x64

6

Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    06/05/2026, 17:03

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General

  • Target
    2026-05-06_921d61dc8a3af8bbe7f6c8830d5431a8_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
  • Size 902KB
  • Sample260506-vkpsyaez2t
  • SHA256 8c8ee42c57c1193ce77ec4fbf7ef4d56513425ad451f9f1941261c3cc352f0c4
  • 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 41 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\2026-05-06_921d61dc8a3af8bbe7f6c8830d5431a8_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-06_921d61dc8a3af8bbe7f6c8830d5431a8_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:4596
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4596 -s 1712
      2⤵
      • Program crash
      PID:5476
  • C:\Users\Admin\AppData\Local\Temp\2026-05-06_921d61dc8a3af8bbe7f6c8830d5431a8_elex_remcos_smoke-loader_stealc_stop_tofsee.exe
    C:\Users\Admin\AppData\Local\Temp\2026-05-06_921d61dc8a3af8bbe7f6c8830d5431a8_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:6080
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 6080 -s 1432
      2⤵
      • Program crash
      PID:6112
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 4596 -ip 4596
    1⤵
      PID:5620
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 6080 -ip 6080
      1⤵
        PID:4588

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            RCX244C.tmp
            • Path C:\Program Files (x86)\Adobe\Acrobat Reader DC\Esl\RCX244C.tmp
            • Size 903KB
            • SHA256 d621185665a06763d09a3a6a7444ad7845c29a15ca3149b538eb51ff9e4cd3e3
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            RCXFAFC.tmp
            • Path C:\Program Files (x86)\Common Files\System\ado\RCXFAFC.tmp
            • Size 903KB
            • SHA256 9175da9e8bbe47173f2d2e1a7f77e6f337fa5b9e3cfd5c469c7fe3afdcd063c5
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            WindowsPhotoAcq.exe
            • Path C:\Program Files (x86)\Windows Photo Viewer\ja-JP\WindowsPhotoAcq.exe
            • Size 902KB
            • SHA256 8c8ee42c57c1193ce77ec4fbf7ef4d56513425ad451f9f1941261c3cc352f0c4
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            memory/4596-172-0x0000000000B90000-0x0000000000C0C000-memory.dmp
            Download

            memory/6080-173-0x0000000000A70000-0x0000000000AEC000-memory.dmp
            Download