Analysis

  • max time kernel
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260618-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    29/06/2026, 02:09

General

  • Target
    2026-06-27_de75c1f656cf51f6db202c0cea33f4cc_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample260629-ck4b8aaz5y
  • SHA256 7ed6358827db05b91f3a77f482e34df07397ab567eb1746e221f01145bf907e1
  • 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\2026-06-27_de75c1f656cf51f6db202c0cea33f4cc_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-06-27_de75c1f656cf51f6db202c0cea33f4cc_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:2428

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 334KB
        • SHA256 79e69018d1bce28d18c00d72ef455c16ef259ba1b6b69a48495abfee1936c691
        • MD5 SHA1 SHA512 SSDEEP TLSH

        chrmstp.exe

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\chrmstp.exe
        • Size 1.5MB
        • SHA256 20cf1558e8c0f6924a821ad510bf137f0594c8862ddcbe458c22e336fdfa2def
        • MD5 SHA1 SHA512 SSDEEP TLSH

        chrome.exe

        • Path C:\Program Files\Google\Chrome\Application\chrome.exe
        • Size 284KB
        • SHA256 32fab4278903793072ed8046f3404dc3a1efd4c9cc29f7a8e9d0f0c3c7839071
        • MD5 SHA1 SHA512 SSDEEP TLSH

        chrome.exe

        • Path C:\Program Files\Google\Chrome\Application\chrome.exe
        • Size 376KB
        • SHA256 3a7339b14b64a4e5ee11cee2ce6c985e99ad0a27a32c1b1c6c55ced8e0150c37
        • MD5 SHA1 SHA512 SSDEEP TLSH

        chrome.exe

        • Path C:\Program Files\Google\Chrome\Application\chrome.exe
        • Size 284KB
        • SHA256 9c9ad449d84ec987e9b34141901444c166a41b58d8dca1995264e3f34484e25d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        chrome.exe

        • Path C:\Program Files\Google\Chrome\Application\chrome.exe
        • Size 308KB
        • SHA256 ad3274fa48c98cfce50b3a98422743ea88729663ce94c0c8f3b360752e272cbe
        • MD5 SHA1 SHA512 SSDEEP TLSH

        chrome.exe

        • Path C:\Program Files\Google\Chrome\Application\chrome.exe
        • Size 1.5MB
        • SHA256 d7566b797e5366604ae8424affb0d7b1ecae7dfafa00f9b5f63b1132aab56529
        • MD5 SHA1 SHA512 SSDEEP TLSH

        jabswitch.exe

        • Path C:\Program Files\Java\jre-1.8\bin\jabswitch.exe
        • Size 284KB
        • SHA256 245b8d84fc26062e344de5e6071dfd9ec51fcd74aab5d3d6f44304e1a9544bd5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        helper.exe

        • Path C:\Program Files\Mozilla Firefox\uninstall\helper.exe
        • Size 334KB
        • SHA256 8e503cd31a3fc1cb4265971eb84d07ebf61053b6dbe8a01d4542bb1c0d73e0b7
        • MD5 SHA1 SHA512 SSDEEP TLSH