Overview

overview

10

Static

static

10

2026-08-23...er.exe

windows10-2004-x64

10

2026-08-23...er.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    126s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    24/08/2026, 04:16

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General

  • Target
    2026-08-23_99b8d961eb97a386e7008cb866740295_elex_rhadamanthys_smoke-loader.exe
  • Size 320KB
  • Sample260824-evtlwasgqa
  • SHA256 3bf56a78cc1397c7536c6d3a78e181beddb60f34dc37845a29f638bf92502e89
  • 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\2026-08-23_99b8d961eb97a386e7008cb866740295_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-23_99b8d961eb97a386e7008cb866740295_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:4584

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 1003224720d7403c80a982ee088455093d4adb09bda6946e5a027f9ba936b647
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCXE0E4.tmp
        • Path C:\Program Files\Google\Chrome\Application\RCXE0E4.tmp
        • Size 284KB
        • SHA256 1ce1a1d27686814495a96b4063cee113fab7286a9f1e6de48683314a249adcf6
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCXE217.tmp
        • Path C:\Program Files\Java\jdk-1.8\bin\RCXE217.tmp
        • Size 284KB
        • SHA256 c759edbfefa3fe4e532e93dd38f7d86b26690574159722e1ae3a752b4cf0ecff
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        default-browser-agent.exe
        • Path C:\Program Files\Mozilla Firefox\default-browser-agent.exe
        • Size 284KB
        • SHA256 015484770717e7afe31bdc2368a4e41f6bb03bb8434c208f27756a67636d5e84
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download