Analysis

  • max time kernel
    148s
  • max time network
    114s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    16/08/2026, 04:03

General

  • Target
    2026-08-16_99d649d3dbc2e1c3ebfd48c72e47ac71_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample260816-emrsbabb39
  • SHA256 2f0df9f3580f8a740ce4c3f838a91eb72095251e3bead925d077ad52faa45ee5
  • 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\2026-08-16_99d649d3dbc2e1c3ebfd48c72e47ac71_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-16_99d649d3dbc2e1c3ebfd48c72e47ac71_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:4300

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 333KB
        • SHA256 81b4bc946c96d6c3cc20155efe30ac1a2d46ca42ba46679231d555383e9aadf0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX1C4C.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCX1C4C.tmp
        • Size 284KB
        • SHA256 0737afb58a88d8ae9b414ea3841bc28fb9b98009c149dac919cb6f58df267f25
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX1DAE.tmp

        • Path C:\Program Files\Java\jdk-1.8\bin\RCX1DAE.tmp
        • Size 284KB
        • SHA256 0f066620cfbfd44f5d974180d517b7a0697d0a3f3feeb1551ed4f63991c75a8a
        • MD5 SHA1 SHA512 SSDEEP TLSH