Analysis

  • max time kernel
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    29/07/2026, 22:52

General

  • Target
    2026-07-29_32cc46b1ce8ee2741d0cfe6d0dab9a2d_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample260729-2twfeagc73
  • SHA256 7bbdcfa4ea36de6039df9ae7c9b5c061cdc64a986c1ad74cd355a8b34ddcf825
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 4 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\2026-07-29_32cc46b1ce8ee2741d0cfe6d0dab9a2d_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-29_32cc46b1ce8ee2741d0cfe6d0dab9a2d_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:3128

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 326KB
        • SHA256 ccb2b7c3c2e095367337f81d1d7d71224e0f676081525d63b491ae8048c792be
        • MD5 SHA1 SHA512 SSDEEP TLSH

        setup.exe

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\setup.exe
        • Size 1.5MB
        • SHA256 7930ca67f6d3639d3105959f2a1210bae4be0af55a13061d7364c8af90647c23
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX3D03.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCX3D03.tmp
        • Size 284KB
        • SHA256 13b738823db887b7ac5748721ff47a8ec51c476b907c3a86063f166077113ec5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        chrome.exe

        • Path C:\Program Files\Google\Chrome\Application\chrome.exe
        • Size 1.5MB
        • SHA256 b7ee72732d29bfa53b278e9bb36a5150895fa5af18ea39f0c6e254a3b2ed97b8
        • MD5 SHA1 SHA512 SSDEEP TLSH