Overview

overview

10

Static

static

10

2026-11-05...er.exe

windows10-2004-x64

10

2026-11-05...er.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    125s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    05/11/2026, 01:57

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General

  • Target
    2026-11-05_9a2a8a29d17b64ec70a9f77704e0eb2b_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample261105-cdd4rasv4k
  • SHA256 fb8eebd956666348733df37a19a897602193c24894b08f2b4e2f1ad7eb3c07e4
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
adwarediscoverycosmuransomwarespywareworm

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

    wormcosmu
  • 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.

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
    ransomware
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 2 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.

    discovery
  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
    adwarespyware

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-11-05_9a2a8a29d17b64ec70a9f77704e0eb2b_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-11-05_9a2a8a29d17b64ec70a9f77704e0eb2b_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies Internet Explorer settings
    PID:248

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe
        • Path C:\Program Files\7-Zip\7z.exe
        • Size 323KB
        • SHA256 894ef9e47e65259ffee6c803f78d5f342e250fef095a42be85bf85c6f2c84ad8
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCXD7C1.tmp
        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCXD7C1.tmp
        • Size 284KB
        • SHA256 fd9f2e09db60d145284aa1c271f6df4f06b57ba1c87eefaa989ef51342fcfd21
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCXD7C2.tmp
        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCXD7C2.tmp
        • Size 284KB
        • SHA256 d4f1ad71a0c0f1d0fab72f90e4fd19b02c488a12c62c1aa84d03a76f2cd57572
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCXD6E0.tmp
        • Path C:\Program Files\Google\Chrome\Application\RCXD6E0.tmp
        • Size 284KB
        • SHA256 424287e77784c06138b7a9b01610521f24c9c35580c91bad209ae1a916c2cc28
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        crashreporter.exe
        • Path C:\Program Files\Mozilla Firefox\crashreporter.exe
        • Size 1.5MB
        • SHA256 4eefa384c2848f0a31380141d3c914ffe448f95cc37aec1d53d1e094c8a22d2c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download