Analysis

  • max time kernel
    148s
  • max time network
    139s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    14/10/2026, 04:28

General

  • Target
    2026-10-13_d93214706ba62c4ba78a2c07ee9b6b0e_elex_rhadamanthys_smoke-loader.exe
  • Size 288KB
  • Sample261014-e367yayvaz
  • SHA256 70625e40fc4d8a3b9ccf5f97ef0ffc9bccc69ce87b9f458801655fdbe1a3c334
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10

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.

  • Drops file in Program Files directory 64 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-10-13_d93214706ba62c4ba78a2c07ee9b6b0e_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-13_d93214706ba62c4ba78a2c07ee9b6b0e_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:1948

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 325KB
        • SHA256 1fd9c7822038c5cb96ba415e79299a6451ad2d31758ff6ab642e12c398c9b8a1
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX730C.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCX730C.tmp
        • Size 288KB
        • SHA256 9f6b4b45a7bb5d94859e5f9252c0975583d6d74fec0774c380537269d76560db
        • 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 5f035a786881a1595f7dca1cae4ad13c987949bc016417d271c8fb08277de710
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX720C.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCX720C.tmp
        • Size 288KB
        • SHA256 7ad158f100521f2b23e0bc13c9e8d3bbb73b24b9bb7892074882347d7a14f1e4
        • MD5 SHA1 SHA512 SSDEEP TLSH