Overview

overview

10

Static

static

10

2026-08-08...er.exe

windows10-2004-x64

10

2026-08-08...er.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    118s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    08/08/2026, 20:50

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General

  • Target
    2026-08-08_582a8afaf6341e9b2700a8da4e9774d7_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample260808-zmlaravbmd
  • SHA256 355cc71aed1cded79f5a91f28a3ec6e9d3fe991b754289916d96d21028bc99e7
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
discoverycosmuworm

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

    wormcosmu
  • Detects Cosmu payload 7 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.

  • Drops file in Program Files directory 64 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-08_582a8afaf6341e9b2700a8da4e9774d7_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-08_582a8afaf6341e9b2700a8da4e9774d7_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:2776

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe
        • Path C:\Program Files\7-Zip\7z.exe
        • Size 320KB
        • SHA256 b1aec172ee62d4b3dccd619dee5560ef4c9d86c1602768e37cb3a3071b6c39a8
        • 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 2c72633f9afb9b8354c96b11a92fcba20638359b492689c72d8b0a063eea776f
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX7EFD.tmp
        • Path C:\Program Files\Google\Chrome\Application\RCX7EFD.tmp
        • Size 284KB
        • SHA256 e819ef9e0b71553d1e5ce431a34ed7afd20f2731f6b4b94ee51b8a26d5f60d27
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX85AF.tmp
        • Path C:\Program Files\Java\jdk-1.8\bin\RCX85AF.tmp
        • Size 284KB
        • SHA256 7cd235b8a525b212eeb7c89fc7749ac2f64da884c9cadc59e7372252c49d3448
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        appletviewer.exe
        • Path C:\Program Files\Java\jdk-1.8\bin\appletviewer.exe
        • Size 284KB
        • SHA256 55cf5a0d63584f5e9eecc51e6ffbff79d833cee5d99a998d6c4041f1362b1353
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        crashreporter.exe
        • Path C:\Program Files\Mozilla Firefox\crashreporter.exe
        • Size 1.5MB
        • SHA256 85d7957ec4a0c2c5386d75094c5c2ef158b55b7e0769f4448542a05fa520b4b9
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        createdump.exe
        • Path C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\createdump.exe
        • Size 284KB
        • SHA256 5f367914b05a67912874f231e2340de3806e99b245befbd0a31feb6a61ddb1e5
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download