Overview

overview

10

Static

static

10

2026-07-28...er.exe

windows10-2004-x64

10

2026-07-28...er.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    97s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    29/07/2026, 01:06

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General

  • Target
    2026-07-28_637851da8f3c5018e6878a3edb0b8428_elex_rhadamanthys_smoke-loader.exe
  • Size 328KB
  • Sample260729-bgghlsdc68
  • SHA256 6be8f238dcfaa42051c4438f11544a6826e6245fe5bda432258c90fd14b45c91
  • 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 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.

  • 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\2026-07-28_637851da8f3c5018e6878a3edb0b8428_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-28_637851da8f3c5018e6878a3edb0b8428_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:924

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe
        • Path C:\Program Files\7-Zip\7z.exe
        • Size 332KB
        • SHA256 ac9284e3139c7ffcda799432a339ad6968b4b6b45959da6c40bb2fd7c2066b0b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        setup.exe
        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\setup.exe
        • Size 1.5MB
        • SHA256 738c55e67639960e35252c6b5cb8d333fe8672e7ec6c4aeedb0213d68e27e359
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX7578.tmp
        • Path C:\Program Files\Google\Chrome\Application\RCX7578.tmp
        • Size 284KB
        • SHA256 4eab4e076868951cef1d2034bcc9210acceff3868a98a54511888140398e7499
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        default-browser-agent.exe
        • Path C:\Program Files\Mozilla Firefox\default-browser-agent.exe
        • Size 284KB
        • SHA256 ea22586a91dd53baf2326f431dd31d8a8aad46a21e7c1b58b32eb52755d568a3
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download