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
    16/09/2026, 20:01

General

  • Target
    2026-09-16_7ea1a67218c3bc53b8ffbe810896b13a_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample260916-yrw3davfja
  • SHA256 9f92ccb8ec7108dcc9dc5022a1e1c6d71700d89cb91325ef96ee1450eb0abb2d
  • 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\2026-09-16_7ea1a67218c3bc53b8ffbe810896b13a_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-16_7ea1a67218c3bc53b8ffbe810896b13a_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:2744

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 322KB
        • SHA256 3089283bb28c5bf88ae10c788c406965ffcea1d2b78d5155e3bc85929bf40554
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXE379.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCXE379.tmp
        • Size 284KB
        • SHA256 1458b5128c34f41d577cc7073a1e7af165093e1e02f0b1bdedbff057ce77a0bd
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXE4BC.tmp

        • Path C:\Program Files\Java\jdk-1.8\bin\RCXE4BC.tmp
        • Size 284KB
        • SHA256 23f53fc4c14b3292de7952cd1631fa9f2b3ea191a71bb17f4d2b6ae640b9660d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        helper.exe

        • Path C:\Program Files\Mozilla Firefox\uninstall\helper.exe
        • Size 322KB
        • SHA256 b335a1856ef47c816f7cba0c6616c0d0ec41bf8f1dcff6f16ea3087874f79402
        • MD5 SHA1 SHA512 SSDEEP TLSH