Analysis

  • max time kernel
    149s
  • max time network
    129s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    26/10/2026, 01:52

General

  • Target
    2026-10-24_2c691f299a57a1bc4204da4437562a9c_elex_rhadamanthys_smoke-loader.exe
  • Size 1.5MB
  • Sample261026-cas4hatyht
  • SHA256 9404d1d2076b082fd63a57772cf5c326bd3844922d738e1c6588a3bbb1cbc35d
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 9 IoCs

    Cosmu is a worm written in C++.

  • Enumerates connected drives 3 TTPs 10 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-10-24_2c691f299a57a1bc4204da4437562a9c_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-24_2c691f299a57a1bc4204da4437562a9c_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies Internet Explorer settings
    PID:5708
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:4952

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          7z.exe

          • Path C:\Program Files\7-Zip\7z.exe
          • Size 334KB
          • SHA256 c0a53ff550e42335bc0b3931906e0bc3dee92401d8e799e128e13e297bc8eaff
          • MD5 SHA1 SHA512 SSDEEP TLSH

          RCX565C.tmp

          • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCX565C.tmp
          • Size 284KB
          • SHA256 0dc37fd42b14b652a6facd97980ae2019ed535e7355977c522288fad948aff93
          • MD5 SHA1 SHA512 SSDEEP TLSH

          RCX565D.tmp

          • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCX565D.tmp
          • Size 284KB
          • SHA256 7db291a9ffbcc0190a5ee6cba2f9878947f52150c2dfe056b01eebf9a1daa0b3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          chrome_pwa_launcher.exe

          • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\chrome_pwa_launcher.exe
          • Size 1.5MB
          • SHA256 0d5914bbc7f858102a87aeb5051459dd6d85d5fbda52b542164a6a3e616dc27a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          elevated_tracing_service.exe

          • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevated_tracing_service.exe
          • Size 1.5MB
          • SHA256 482027aa1d05a6d8e6691dcb120c29bdfdfe618b4240367d7523205b0872f320
          • MD5 SHA1 SHA512 SSDEEP TLSH

          RCX54FE.tmp

          • Path C:\Program Files\Google\Chrome\Application\RCX54FE.tmp
          • Size 284KB
          • SHA256 15262c5f5c6181055c5c36c30bc73522f108ed104b0cb816042bb8b1cabbadb2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          appletviewer.exe

          • Path C:\Program Files\Java\jdk-1.8\bin\appletviewer.exe
          • Size 284KB
          • SHA256 db3fe750ae2a3dec7de335d95b945d446d7d0d7d4c945045ed792babfc7966a2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          jabswitch.exe

          • Path C:\Program Files\Java\jre-1.8\bin\jabswitch.exe
          • Size 284KB
          • SHA256 546005528792d141e9da557fbb18c4ceeff945f2f19d6049feab83dc96f261fd
          • MD5 SHA1 SHA512 SSDEEP TLSH

          default-browser-agent.exe

          • Path C:\Program Files\Mozilla Firefox\default-browser-agent.exe
          • Size 284KB
          • SHA256 73bd3a7a2f7825595e0d548a1f72df4ec24e890ad218bf585dac2776312fc0b3
          • MD5 SHA1 SHA512 SSDEEP TLSH