Analysis

  • max time kernel
    148s
  • max time network
    138s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    30/07/2026, 17:52

General

  • Target
    2026-07-30_3c44431f75b03e0b1acdc1cfa23261ef_elex_rhadamanthys_smoke-loader.exe
  • Size 288KB
  • Sample260730-wfwlcsdr3y
  • SHA256 cdf432354ddb24f97d2e924a6a36cbfb80b1ad8c80ee07ff09f32c79e9218728
  • 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\2026-07-30_3c44431f75b03e0b1acdc1cfa23261ef_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-30_3c44431f75b03e0b1acdc1cfa23261ef_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:4144

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 324KB
        • SHA256 dcb549c1259c9156775da858cd71ccf81562f08c8519ce92e12d5ea71135d0e8
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXA1B8.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCXA1B8.tmp
        • Size 288KB
        • SHA256 38b8e8c145184c87d1783971070ea2d657cb0ece63df7457352db1f77d41b690
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXA349.tmp

        • Path C:\Program Files\Java\jdk-1.8\bin\RCXA349.tmp
        • Size 288KB
        • SHA256 15f53cf2e247f4582222c37cc31a5a7684ee96c6763ee7a67257246594557bf1
        • MD5 SHA1 SHA512 SSDEEP TLSH

        appletviewer.exe

        • Path C:\Program Files\Java\jdk-1.8\bin\appletviewer.exe
        • Size 288KB
        • SHA256 c389f9ec987c29e33795c4746fde3a07c7573196a5ea7ab87a91dfc9a1d33fb0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        helper.exe

        • Path C:\Program Files\Mozilla Firefox\uninstall\helper.exe
        • Size 348KB
        • SHA256 6b9c97b2cfa9713125a6b07438519907dfbb3878ecda155d8e6ea9c51c9b319c
        • MD5 SHA1 SHA512 SSDEEP TLSH