Overview

overview

10

Static

static

10

2026-11-08...er.exe

windows10-2004-x64

10

2026-11-08...er.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    127s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    09/11/2026, 03:39

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General

  • Target
    2026-11-08_53b556435a5e4da38923fbcff892bb0e_elex_rhadamanthys_smoke-loader.exe
  • Size 1.5MB
  • Sample261109-d73vmscd27
  • SHA256 342355bfef8309be415fb7be469f3194bd9f8f0231dc4f1eadecec3fe1b9ce19
  • 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\2026-11-08_53b556435a5e4da38923fbcff892bb0e_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-11-08_53b556435a5e4da38923fbcff892bb0e_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:4296

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe
        • Path C:\Program Files\7-Zip\7z.exe
        • Size 329KB
        • SHA256 d51bc80e78b504b66fd4ab581dad4f3ae7855c26a40ea42a2fe462883e60bbb8
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCXDC79.tmp
        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCXDC79.tmp
        • Size 288KB
        • SHA256 3543bc75e5d0853a70f750a952be4f4e769f2deef37ab1b1862f66c3dd4ddf38
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCXDC7A.tmp
        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCXDC7A.tmp
        • Size 288KB
        • SHA256 ea69ad83ae0436052aa87cda10a195f8d39ee5263ae7fdcb15a6c9385a63676b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCXDBB7.tmp
        • Path C:\Program Files\Google\Chrome\Application\RCXDBB7.tmp
        • Size 288KB
        • SHA256 a977d0ddc407364de66f2f0aecb5d9be444f8e19175d98d7830cf1ddf276ad87
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download