Analysis

  • max time kernel
    150s
  • max time network
    125s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    09/11/2026, 01:05

General

  • Target
    2026-11-08_7af4ea690b4c52cb0934523bce90f0d3_elex_rhadamanthys_smoke-loader.exe
  • Size 288KB
  • Sample261109-bfst9agz21
  • SHA256 0a9ce1af8fc578378c6036766be8cd949c3ed3856616a323c8003bb0765bfbbe
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 6 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\2026-11-08_7af4ea690b4c52cb0934523bce90f0d3_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-11-08_7af4ea690b4c52cb0934523bce90f0d3_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:3152

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 331KB
        • SHA256 5acf924367b31b3a218bf30f909b18d3dbaed82a999192d169e9b9844a68dfb1
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXD7D1.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCXD7D1.tmp
        • Size 288KB
        • SHA256 e99feb282ce99950e615149c6e8cfea2699ae2101a0e9b8764b1c05a51f4d12b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXD7E2.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCXD7E2.tmp
        • Size 288KB
        • SHA256 d226bb48e2b2fd34ee9af320e55ae6a0326d202780359950a6bc1336b3799b5d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXD683.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCXD683.tmp
        • Size 288KB
        • SHA256 f8b81b325aec80f6e0f9f0d3fa642baa8cea2a942592a2490396b28f910b6dd3
        • MD5 SHA1 SHA512 SSDEEP TLSH

        chrome.exe

        • Path C:\Program Files\Google\Chrome\Application\chrome.exe
        • Size 1.5MB
        • SHA256 46c75443c2eac09093713c1c8d112a4a73e75b236d15e283cacbbdc800321db2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        appletviewer.exe

        • Path C:\Program Files\Java\jdk-1.8\bin\appletviewer.exe
        • Size 288KB
        • SHA256 2bef5dd251cfb73955dee0407798589140ff26f459b51f48c2cc5d50fd34b15b
        • MD5 SHA1 SHA512 SSDEEP TLSH