Analysis

  • max time kernel
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260630-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260630-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    01/07/2026, 04:07

General

  • Target
    2026-06-30_80d4cd3eca125c027def9e8cad48191a_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample260701-epynmsfz5v
  • SHA256 e367ed76b39f30937a47613115962e6c6a8e80b373c0a1c886b0a8c6a6e68cb7
  • 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\2026-06-30_80d4cd3eca125c027def9e8cad48191a_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-06-30_80d4cd3eca125c027def9e8cad48191a_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:2352

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 331KB
        • SHA256 931378a3d80f3110185b4445a170c94e5de98288d5e360e36bc179e14ca467d5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX316A.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCX316A.tmp
        • Size 284KB
        • SHA256 e782ab4832693a3d42e733aaf887e4254c770078fe280b1260f721341e15e81a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX32DC.tmp

        • Path C:\Program Files\Java\jdk-1.8\bin\RCX32DC.tmp
        • Size 284KB
        • SHA256 10d428e632e6ec11a70981ff95d7f389dd44e2da1882c641059e892bf31f1b28
        • MD5 SHA1 SHA512 SSDEEP TLSH

        helper.exe

        • Path C:\Program Files\Mozilla Firefox\uninstall\helper.exe
        • Size 331KB
        • SHA256 59c92401f7e4e47d54c3cc86e36c3d334cb90923d6837225ee90a80a1f7e8677
        • MD5 SHA1 SHA512 SSDEEP TLSH