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
    148s
  • max time network
    128s
  • 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, 01:33

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General

  • Target
    2026-11-05_dc2e01a10fe2d9b3b76b76f6748f455c_elex_rhadamanthys_smoke-loader.exe
  • Size 288KB
  • Sample261105-byrd5sfc84
  • SHA256 4964ec826168abfae7507301270aa01d332534602b197af70fe751481536aedf
  • 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_dc2e01a10fe2d9b3b76b76f6748f455c_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-11-05_dc2e01a10fe2d9b3b76b76f6748f455c_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:3464

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe
        • Path C:\Program Files\7-Zip\7z.exe
        • Size 337KB
        • SHA256 376893491a89fa2208783ee03a444c0694971aff7e89cb48ecb0565fb788e48c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX75AC.tmp
        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCX75AC.tmp
        • Size 288KB
        • SHA256 47d8d9c3ee853e1eee8cbdc53503c65a17355d2f74521f11587fedab6a2fec67
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX75AD.tmp
        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCX75AD.tmp
        • Size 288KB
        • SHA256 921324b6411613107e5b10c58295f13309347de3e6aaa8d3ba6f97ec87054890
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX74FA.tmp
        • Path C:\Program Files\Google\Chrome\Application\RCX74FA.tmp
        • Size 288KB
        • SHA256 a19a1f4872fbb746bfad7704dce57d656a89dfe76da7f62dc7bf3f4cc78c9aa8
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        helper.exe
        • Path C:\Program Files\Mozilla Firefox\uninstall\helper.exe
        • Size 337KB
        • SHA256 9f74200675339a813a97694da793a67d28a16fab2f2b3855f0225774210b3ebb
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download