Analysis

  • max time kernel
    148s
  • max time network
    126s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    24/09/2026, 07:50

General

  • Target
    2026-09-23_5fc501460f03e9589136273d6903215c_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample260924-jpmzcsv18n
  • SHA256 d6d7d664de53e5cb910e67378b7fc0110cb97241db5f39d2b7e1997ede364f8d
  • 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\2026-09-23_5fc501460f03e9589136273d6903215c_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-23_5fc501460f03e9589136273d6903215c_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:5312

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 321KB
        • SHA256 6e60bea75988007da09424f2df3920994cb4b36487e0632e98c4680c4cd5673d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX4E87.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCX4E87.tmp
        • Size 284KB
        • SHA256 d5f11a7268f50bbadc2825515b2ef59ef20faffca40908be22559803af4aae30
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX519F.tmp

        • Path C:\Program Files\Java\jdk-1.8\bin\RCX519F.tmp
        • Size 284KB
        • SHA256 8ed95867bfe2cf36c308edbddfb07a9e3e09c30f42cb85dd43c9ca11952d367a
        • MD5 SHA1 SHA512 SSDEEP TLSH