Overview

overview

10

Static

static

10

2026-09-24...er.exe

windows10-2004-x64

10

2026-09-24...er.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    125s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    25/09/2026, 06:02

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General

  • Target
    2026-09-24_82fa8d60ddeaa6cb37ad9c8aaf8faf3c_elex_rhadamanthys_smoke-loader.exe
  • Size 1.5MB
  • Sample260925-grrn8abb47
  • SHA256 076a16f4f897fc766f97fb3ce264a989d56cd18900082e17fa29a089b4617da6
  • 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 8 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\2026-09-24_82fa8d60ddeaa6cb37ad9c8aaf8faf3c_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-24_82fa8d60ddeaa6cb37ad9c8aaf8faf3c_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:4336

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe
        • Path C:\Program Files\7-Zip\7z.exe
        • Size 321KB
        • SHA256 f6ceb427a06f4e27e1d6763c172ff933dec8b3eebfde52ae3d8b5fc5e71348be
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        appvcleaner.exe
        • Path C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe
        • Size 1.5MB
        • SHA256 72590c5d41779af861859da33e98caacc39e9fe221c2112be0cdc30da3ed2b1c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        elevated_tracing_service.exe
        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevated_tracing_service.exe
        • Size 1.5MB
        • SHA256 c0a6d70789309f1168dc999ad1c9d1d63ee7c8c60de70cccdd5492230485a918
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX58B8.tmp
        • Path C:\Program Files\Google\Chrome\Application\RCX58B8.tmp
        • Size 284KB
        • SHA256 26e51bc94350f532c66c2d1fccb3a9702d604af43265a3510d7cb0184a634605
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        chrome_proxy.exe
        • Path C:\Program Files\Google\Chrome\Application\chrome_proxy.exe
        • Size 321KB
        • SHA256 bb1fa631fcb90e046dddfe72fcbb3b43937e4eb283c4d55ab788ef91ec6e9572
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX59FB.tmp
        • Path C:\Program Files\Java\jdk-1.8\bin\RCX59FB.tmp
        • Size 284KB
        • SHA256 57ac3bad407c81fdfc1b6d8f2bd48df15fc5e4f15b99d89d5f7be24ee5c1d214
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        appletviewer.exe
        • Path C:\Program Files\Java\jdk-1.8\bin\appletviewer.exe
        • Size 284KB
        • SHA256 542ca27ee251a48381a7df56e0f26771186a4c65b8b51c2e58a50c190f222c04
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        dotnet.exe
        • Path C:\Program Files\dotnet\dotnet.exe
        • Size 284KB
        • SHA256 1d9928e12a01b8308a1294a7b9d8d8dfb973a7129529a65a67c91376e10a7689
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download