Analysis

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

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    28/08/2026, 04:25

General

  • Target
    2026-08-27_de6a7df6a1c98ff5bdb3ddd5842ed554_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample260828-e1zebasybx
  • SHA256 d0bf18ebc682d7dc72c001c5ec68cdbe93a01fa56ac7e925f8554b8639bcac5a
  • 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\2026-08-27_de6a7df6a1c98ff5bdb3ddd5842ed554_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-27_de6a7df6a1c98ff5bdb3ddd5842ed554_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:5608

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 330KB
        • SHA256 0f192a4d8a68d3a26b2cc12c481e0dfd1493b5139707e7b4c257a0ebc4563efc
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX1140.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCX1140.tmp
        • Size 284KB
        • SHA256 7790e512d130a53e3fb89f287cacf41c7bc0f150676a4402dd5b81fd5e73d818
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX12A2.tmp

        • Path C:\Program Files\Java\jdk-1.8\bin\RCX12A2.tmp
        • Size 284KB
        • SHA256 738e2c6ccad68f4d5c5bfab224bab58e535b67fdf0b12ad5256fe85e06928111
        • MD5 SHA1 SHA512 SSDEEP TLSH