Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    24/04/2026, 04:50

General

  • Target
    2026-04-24_f290cc9d7dca1842f4e7572dbadb0682_elex_glassworm_remcos_smoke-loader_stealc_stop_tofsee.exe
  • Size 982KB
  • Sample260424-fgaghsft7s
  • SHA256 f4532b7c5e650dfea4e6ee9c83610e450823394ddb51b3e18b5d01736cca95d6
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 57 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.

  • Checks processor information in registry 2 TTPs 6 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-04-24_f290cc9d7dca1842f4e7572dbadb0682_elex_glassworm_remcos_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-24_f290cc9d7dca1842f4e7572dbadb0682_elex_glassworm_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:3368
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3368 -s 1312
      2⤵
      • Program crash
      PID:4260
  • C:\Users\Admin\AppData\Local\Temp\2026-04-24_f290cc9d7dca1842f4e7572dbadb0682_elex_glassworm_remcos_smoke-loader_stealc_stop_tofsee.exe
    C:\Users\Admin\AppData\Local\Temp\2026-04-24_f290cc9d7dca1842f4e7572dbadb0682_elex_glassworm_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:3008
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3008 -s 1328
      2⤵
      • Program crash
      PID:784
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3368 -ip 3368
    1⤵
      PID:3456
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 3008 -ip 3008
      1⤵
        PID:1624

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            RCXC62.tmp

            • Path C:\Program Files (x86)\Windows Defender\es-ES\RCXC62.tmp
            • Size 983KB
            • SHA256 f605777df562cb149a820ff8679e9098623c202e86cfccc39340e0ca390c9835
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Betriebssystemwordpad.exe

            • Path C:\Program Files (x86)\Windows NT\Accessories\de-DE\Betriebssystemwordpad.exe
            • Size 982KB
            • SHA256 f4532b7c5e650dfea4e6ee9c83610e450823394ddb51b3e18b5d01736cca95d6
            • MD5 SHA1 SHA512 SSDEEP TLSH