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
    124s
  • 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, 02:13

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General

  • Target
    2026-11-05_78081a7c551fb5b6f905a77199cb7fb2_elex_rhadamanthys_smoke-loader.exe
  • Size 1.5MB
  • Sample261105-cnw3basv7n
  • SHA256 c0974c72afe22fd528e788aee06d1c35f5e15043a6dc7440471b366952c77298
  • 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 6 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_78081a7c551fb5b6f905a77199cb7fb2_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-11-05_78081a7c551fb5b6f905a77199cb7fb2_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 330KB
        • SHA256 e02b553e5bfe5a0e54873e61a14f18b3dac3b82a04d2f520d64acfb826fb3f26
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCXD7B2.tmp
        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCXD7B2.tmp
        • Size 288KB
        • SHA256 80d02cda5832c2435ce5f8187eba3848b854900d4131746d7bdf0fc9bad3fdb2
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        chrmstp.exe
        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\chrmstp.exe
        • Size 1.5MB
        • SHA256 a4ad33aab49de245a646be0b54589c07028d210a0657cadc9835785963ab4104
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        chrome_pwa_launcher.exe
        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\chrome_pwa_launcher.exe
        • Size 1.5MB
        • SHA256 e1af9b563a72e2beabb7e4f170a226d51b93f4ebeecc35d57956d39cea4c3b8c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCXD683.tmp
        • Path C:\Program Files\Google\Chrome\Application\RCXD683.tmp
        • Size 288KB
        • SHA256 ad817ae26f523ac0f786973846dc1fe6b9435ac4c57e98985d66a3027b502b8f
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        default-browser-agent.exe
        • Path C:\Program Files\Mozilla Firefox\default-browser-agent.exe
        • Size 288KB
        • SHA256 1c6e542ba03293b64d43705768e67e93de62c0fd3c31c7119585616de3c71fc7
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download