Analysis

  • max time kernel
    148s
  • max time network
    123s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260706-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    06/07/2026, 22:53

General

  • Target
    2026-07-06_0198606f7464562771170eb8fc12010b_elex_rhadamanthys_smoke-loader.exe
  • Size 1.5MB
  • Sample260706-2t5dbaat2l
  • SHA256 40768d358081b6f8602781a61cd1f673ca793dada0d8ec030124910cc07c47f1
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 3 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
  • 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.

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-07-06_0198606f7464562771170eb8fc12010b_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-06_0198606f7464562771170eb8fc12010b_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:3772

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 325KB
        • SHA256 648d3af349e1a7423fa7cfd5a323fb88f51841185667ceac3d7927766d84db62
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX40DB.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCX40DB.tmp
        • Size 284KB
        • SHA256 c0a929138dcabc5445611ed53f6137d7e76c388d0e28f9d6b7a29cd54b36ac7b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX41FF.tmp

        • Path C:\Program Files\Java\jdk-1.8\bin\RCX41FF.tmp
        • Size 284KB
        • SHA256 51d1cbd613c8070a6e12bd5da32df73200c8b8908f83efc4f38e8baba4f4198c
        • MD5 SHA1 SHA512 SSDEEP TLSH