Analysis

  • max time kernel
    148s
  • max time network
    126s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    07/09/2026, 15:01

General

  • Target
    2026-09-05_82493ae19f3ec6b955881804e262933b_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample260907-sebysabq6w
  • SHA256 1ba08bb11e239d1371ac6a66e803251579aa5b66a1ec042a2b4639c1cda0df4a
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 3 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\2026-09-05_82493ae19f3ec6b955881804e262933b_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-05_82493ae19f3ec6b955881804e262933b_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:4440

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 328KB
        • SHA256 9eaa16347b98378c3ff21a2663b3ebce1155cca56835cac135a35206834dc33c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXC3EB.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCXC3EB.tmp
        • Size 284KB
        • SHA256 f62a82814b8d6dad43c9e550c385d8e4f2a3d84e860a98f676574417f58e423a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXC56C.tmp

        • Path C:\Program Files\Java\jdk-1.8\bin\RCXC56C.tmp
        • Size 284KB
        • SHA256 41d5629b46dfc11d27ace6be51ada747eeb11ee30f393cfbf2e297a7ab5ca862
        • MD5 SHA1 SHA512 SSDEEP TLSH