Overview

overview

10

Static

static

10

2026-08-17...er.exe

windows10-2004-x64

10

2026-08-17...er.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    146s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    18/08/2026, 00:09

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General

  • Target
    2026-08-17_91ba36242a610e390ab9f7b3345b5777_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample260818-afk9qsbl9x
  • SHA256 5f285b0a4bb576bcd2c341ad3a2c0bb231f1c5221e32ae22cd72287736f9b373
  • 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\2026-08-17_91ba36242a610e390ab9f7b3345b5777_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-17_91ba36242a610e390ab9f7b3345b5777_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:4500

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe
        • Path C:\Program Files\7-Zip\7z.exe
        • Size 327KB
        • SHA256 f060542d6275e936c1018ec11a23387afc15a133b65413965b7fa01f739161df
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX5DBA.tmp
        • Path C:\Program Files\Google\Chrome\Application\RCX5DBA.tmp
        • Size 284KB
        • SHA256 d6c8753482165e3e7a6ef80b1bb64efc12526f56880e0a53452f5f955237b999
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        chrome.exe
        • Path C:\Program Files\Google\Chrome\Application\chrome.exe
        • Size 1.5MB
        • SHA256 09dbf073eeae671f8a34fc7904c561733f7180a7a2eb6ec68e1e5cb4cb2018d3
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX5EFD.tmp
        • Path C:\Program Files\Java\jdk-1.8\bin\RCX5EFD.tmp
        • Size 284KB
        • SHA256 35b55fd977f935571f492dfe32357906dd343d2f5c1f21b9e9dd2ed9265dc6f2
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download