Analysis

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

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    22/09/2026, 14:39

General

  • Target
    2026-09-21_2047596d589a2f9a207ab993243d11ed_elex_rhadamanthys_smoke-loader.exe
  • Size 1.5MB
  • Sample260922-r1efcssv9l
  • SHA256 4926214190e4ae4acafccd55bccf5835cbe146763bc3803cb9ca513d6bd71fff
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 5 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\2026-09-21_2047596d589a2f9a207ab993243d11ed_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-21_2047596d589a2f9a207ab993243d11ed_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:5648

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 a07fdc27c4de7586d427baaccb418cdd3237940bfee54aa77aeb132825a87aa6
        • MD5 SHA1 SHA512 SSDEEP TLSH

        chrome_pwa_launcher.exe

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\chrome_pwa_launcher.exe
        • Size 1.5MB
        • SHA256 8fcce4a7ae0984840023dbecd4cf073c0b44836713f1ab109941ebfd131c1ed2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX8101.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCX8101.tmp
        • Size 284KB
        • SHA256 7e246b6af96596b7a09b8ab159dbc5ffb93b6b2f1350e254a2dac690cd1916b9
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX8273.tmp

        • Path C:\Program Files\Java\jdk-1.8\bin\RCX8273.tmp
        • Size 284KB
        • SHA256 6f054a19fc1b6c77222f167dfcfd62fda337b856bcf8f8259809bcaef1ec44a0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        helper.exe

        • Path C:\Program Files\Mozilla Firefox\uninstall\helper.exe
        • Size 328KB
        • SHA256 55818c8f500afb58c34e2c04621e924262e546f4d855d91fb062fabd7bfb000e
        • MD5 SHA1 SHA512 SSDEEP TLSH