Analysis

  • max time kernel
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/11/2026, 03:37

General

  • Target
    2026-11-01_f09f854a8fdc67512f10409508878cf4_elex_rhadamanthys_smoke-loader.exe
  • Size 1.5MB
  • Sample261102-d6mr2ast7l
  • SHA256 f1d0704c79e5cbe1a681cc146130c8ef4d601d8db8c2f0ea1118abf931c7bc84
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 7 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\2026-11-01_f09f854a8fdc67512f10409508878cf4_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-11-01_f09f854a8fdc67512f10409508878cf4_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:1572

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 330KB
        • SHA256 058e1270cb3df9230ba425eb881cab5d9f383b2bd946288faf71ca18445a2f4b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX5311.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCX5311.tmp
        • Size 284KB
        • SHA256 0af892d4056d69f533048b49d04327d6e0bdc2bd81c406f890f6a69e7dbbe3fd
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX5312.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCX5312.tmp
        • Size 284KB
        • SHA256 dffad2ca2e500972babb0410affbdc567cb7d427a5d52699408407c32c096851
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX5136.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCX5136.tmp
        • Size 284KB
        • SHA256 5eb46fda51c8c19e602cb90793aaf94b448fd6b2f59716608b2e3586f066f867
        • MD5 SHA1 SHA512 SSDEEP TLSH

        chrome.exe

        • Path C:\Program Files\Google\Chrome\Application\chrome.exe
        • Size 304KB
        • SHA256 00d17212f1f30e5302393f0ce767a8556d9e3226697448d9787d9f5ed5183e69
        • MD5 SHA1 SHA512 SSDEEP TLSH

        crashreporter.exe

        • Path C:\Program Files\Mozilla Firefox\crashreporter.exe
        • Size 1.5MB
        • SHA256 bbff41a001bcc2c08b677428e6651f4620300c231395a99a83bc53392b6882fe
        • MD5 SHA1 SHA512 SSDEEP TLSH

        helper.exe

        • Path C:\Program Files\Mozilla Firefox\uninstall\helper.exe
        • Size 354KB
        • SHA256 41ca550a09c448a4fb36ec386e6a501a26cabe698017c06265864bc4d320fca2
        • MD5 SHA1 SHA512 SSDEEP TLSH